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MailHog DownloadGoDocBuild Status

Inspired by MailCatcher, easier to install.

  • Download and run MailHog
  • Configure your outgoing SMTP server
  • View your outgoing email in a web UI
  • Release it to a real mail server

Built with Go - MailHog runs without installation on multiple platforms.

Overview

MailHog is an email testing tool for developers:

  • Configure your application to use MailHog for SMTP delivery
  • View messages in the web UI, or retrieve them with the JSON API
  • Optionally release messages to real SMTP servers for delivery

Installation

Manual installation

Download the latest release for your platform. Then read the deployment guide for deployment options.

MacOS

brew update && brew install mailhog

Then, start MailHog by running mailhog in the command line.

Debian / Ubuntu

sudo apt-get -y install golang-go
go get github.com/mailhog/MailHog

Then, start MailHog by running /path/to/MailHog in the command line.

E.g. the path to Go's bin files on Ubuntu is ~/go/bin/, so to start the MailHog run:

~/go/bin/MailHog

FreeBSD

pkg install mailhog
sysrc mailhog_enable="YES"
service mailhog start

Docker

Run it from Docker Hub or using the provided Dockerfile

Configuration

Check out how to configure MailHog, or use the default settings:

  • the SMTP server starts on port 1025
  • the HTTP server starts on port 8025
  • in-memory message storage

Features

See MailHog libraries for a list of MailHog client libraries.

  • ESMTP server implementing RFC5321
  • Support for SMTP AUTH (RFC4954) and PIPELINING (RFC2920)
  • Web interface to view messages (plain text, HTML or source)
    • Supports RFC2047 encoded headers
  • Real-time updates using EventSource
  • Release messages to real SMTP servers
  • Chaos Monkey for failure testing
  • HTTP API to list, retrieve and delete messages
    • See APIv1 and APIv2 documentation for more information
  • HTTP basic authentication for MailHog UI and API
  • Multipart MIME support
  • Download individual MIME parts
  • In-memory message storage
  • MongoDB and file based storage for message persistence
  • Lightweight and portable
  • No installation required

sendmail

mhsendmail is a sendmail replacement for MailHog.

It redirects mail to MailHog using SMTP.

You can also use MailHog sendmail ... instead of the separate mhsendmail binary.

Alternatively, you can use your native sendmail command by providing -S, for example:

/usr/sbin/sendmail -S mail:1025

For example, in PHP you could add either of these lines to php.ini:

sendmail_path = /usr/local/bin/mhsendmail
sendmail_path = /usr/sbin/sendmail -S mail:1025

Web UI

Screenshot of MailHog web interface

Contributing

MailHog is a rewritten version of MailHog, which was born out of M3MTA.

Clone this repository to $GOPATH/src/github.com/mailhog/MailHog and type make deps.

See the Building MailHog guide.

Requires Go 1.4+ to build.

Run tests using make test or goconvey.

If you make any changes, run go fmt ./... before submitting a pull request.

Licence

Copyright ©‎ 2014 - 2017, Ian Kent (http://iankent.uk)

Released under MIT license, see LICENSE for details.

About

Web and API based SMTP testing

Resources

Readme
MIT license
Activity

Stars

0 stars

Watchers

0 watching

Forks

0 forks
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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MailHog DownloadGoDocBuild Status
Inspired by MailCatcher, easier to install.
  • Download and run MailHog
  • Configure your outgoing SMTP server
  • View your outgoing email in a web UI
  • Release it to a real mail server
Built with Go - MailHog runs without installation on multiple platforms.
Overview
MailHog is an email testing tool for developers:
  • Configure your application to use MailHog for SMTP delivery
  • View messages in the web UI, or retrieve them with the JSON API
  • Optionally release messages to real SMTP servers for delivery
Installation
Manual installation
Download the latest release for your platform. Then
read the deployment guide for deployment options.
MacOS
brew update && brew install mailhog
Then, start MailHog by running mailhog in the command line.
Debian / Ubuntu
sudo apt-get -y install golang-go
go get github.com/mailhog/MailHog
Then, start MailHog by running /path/to/MailHog in the command line.
E.g. the path to Go's bin files on Ubuntu is ~/go/bin/, so to start the MailHog run:
~/go/bin/MailHog
FreeBSD
pkg install mailhog
sysrc mailhog_enable="YES"
service mailhog start
Docker
Run it from Docker Hub or using the provided Dockerfile
Configuration
Check out how to configure MailHog, or use the default settings:
  • the SMTP server starts on port 1025
  • the HTTP server starts on port 8025
  • in-memory message storage
Features
See MailHog libraries for a list of MailHog client libraries.
  • ESMTP server implementing RFC5321
  • Support for SMTP AUTH (RFC4954) and PIPELINING (RFC2920)
  • Web interface to view messages (plain text, HTML or source)

    • Supports RFC2047 encoded headers
  • Real-time updates using EventSource
  • Release messages to real SMTP servers
  • Chaos Monkey for failure testing

  • HTTP API to list, retrieve and delete messages

    • See APIv1 and APIv2 documentation for more information
  • HTTP basic authentication for MailHog UI and API
  • Multipart MIME support
  • Download individual MIME parts
  • In-memory message storage
  • MongoDB and file based storage for message persistence
  • Lightweight and portable
  • No installation required
sendmail
mhsendmail is a sendmail replacement for MailHog.
It redirects mail to MailHog using SMTP.
You can also use MailHog sendmail ... instead of the separate mhsendmail binary.
Alternatively, you can use your native sendmail command by providing -S, for example:
/usr/sbin/sendmail -S mail:1025
For example, in PHP you could add either of these lines to php.ini:
sendmail_path = /usr/local/bin/mhsendmail
sendmail_path = /usr/sbin/sendmail -S mail:1025

Web UI
Screenshot of MailHog web interface
Contributing
MailHog is a rewritten version of MailHog, which was born out of M3MTA.
Clone this repository to $GOPATH/src/github.com/mailhog/MailHog and type make deps.
See the Building MailHog guide.
Requires Go 1.4+ to build.
Run tests using make test or goconvey.
If you make any changes, run go fmt ./... before submitting a pull request.
Licence
Copyright ©‎ 2014 - 2017, Ian Kent (http://iankent.uk)
Released under MIT license, see LICENSE for details.
About
Web and API based SMTP testing
Resources
Readme
MIT license
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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MailHog DownloadGoDocBuild Status
Inspired by MailCatcher, easier to install.
  • Download and run MailHog
  • Configure your outgoing SMTP server
  • View your outgoing email in a web UI
  • Release it to a real mail server
Built with Go - MailHog runs without installation on multiple platforms.
Overview
MailHog is an email testing tool for developers:
  • Configure your application to use MailHog for SMTP delivery
  • View messages in the web UI, or retrieve them with the JSON API
  • Optionally release messages to real SMTP servers for delivery
Installation
Manual installation
Download the latest release for your platform. Then
read the deployment guide for deployment options.
MacOS
brew update && brew install mailhog
Then, start MailHog by running mailhog in the command line.
Debian / Ubuntu
sudo apt-get -y install golang-go
go get github.com/mailhog/MailHog
Then, start MailHog by running /path/to/MailHog in the command line.
E.g. the path to Go's bin files on Ubuntu is ~/go/bin/, so to start the MailHog run:
~/go/bin/MailHog
FreeBSD
pkg install mailhog
sysrc mailhog_enable="YES"
service mailhog start
Docker
Run it from Docker Hub or using the provided Dockerfile
Configuration
Check out how to configure MailHog, or use the default settings:
  • the SMTP server starts on port 1025
  • the HTTP server starts on port 8025
  • in-memory message storage
Features
See MailHog libraries for a list of MailHog client libraries.
  • ESMTP server implementing RFC5321
  • Support for SMTP AUTH (RFC4954) and PIPELINING (RFC2920)
  • Web interface to view messages (plain text, HTML or source)

    • Supports RFC2047 encoded headers
  • Real-time updates using EventSource
  • Release messages to real SMTP servers
  • Chaos Monkey for failure testing

  • HTTP API to list, retrieve and delete messages

    • See APIv1 and APIv2 documentation for more information
  • HTTP basic authentication for MailHog UI and API
  • Multipart MIME support
  • Download individual MIME parts
  • In-memory message storage
  • MongoDB and file based storage for message persistence
  • Lightweight and portable
  • No installation required
sendmail
mhsendmail is a sendmail replacement for MailHog.
It redirects mail to MailHog using SMTP.
You can also use MailHog sendmail ... instead of the separate mhsendmail binary.
Alternatively, you can use your native sendmail command by providing -S, for example:
/usr/sbin/sendmail -S mail:1025
For example, in PHP you could add either of these lines to php.ini:
sendmail_path = /usr/local/bin/mhsendmail
sendmail_path = /usr/sbin/sendmail -S mail:1025

Web UI
Screenshot of MailHog web interface
Contributing
MailHog is a rewritten version of MailHog, which was born out of M3MTA.
Clone this repository to $GOPATH/src/github.com/mailhog/MailHog and type make deps.
See the Building MailHog guide.
Requires Go 1.4+ to build.
Run tests using make test or goconvey.
If you make any changes, run go fmt ./... before submitting a pull request.
Licence
Copyright ©‎ 2014 - 2017, Ian Kent (http://iankent.uk)
Released under MIT license, see LICENSE for details.
About
Web and API based SMTP testing
Resources
Readme
MIT license
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
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MailHog DownloadGoDocBuild Status
Inspired by MailCatcher, easier to install.
  • Download and run MailHog
  • Configure your outgoing SMTP server
  • View your outgoing email in a web UI
  • Release it to a real mail server
Built with Go - MailHog runs without installation on multiple platforms.
Overview
MailHog is an email testing tool for developers:
  • Configure your application to use MailHog for SMTP delivery
  • View messages in the web UI, or retrieve them with the JSON API
  • Optionally release messages to real SMTP servers for delivery
Installation
Manual installation
Download the latest release for your platform. Then
read the deployment guide for deployment options.
MacOS
brew update && brew install mailhog
Then, start MailHog by running mailhog in the command line.
Debian / Ubuntu
sudo apt-get -y install golang-go
go get github.com/mailhog/MailHog
Then, start MailHog by running /path/to/MailHog in the command line.
E.g. the path to Go's bin files on Ubuntu is ~/go/bin/, so to start the MailHog run:
~/go/bin/MailHog
FreeBSD
pkg install mailhog
sysrc mailhog_enable="YES"
service mailhog start
Docker
Run it from Docker Hub or using the provided Dockerfile
Configuration
Check out how to configure MailHog, or use the default settings:
  • the SMTP server starts on port 1025
  • the HTTP server starts on port 8025
  • in-memory message storage
Features
See MailHog libraries for a list of MailHog client libraries.
  • ESMTP server implementing RFC5321
  • Support for SMTP AUTH (RFC4954) and PIPELINING (RFC2920)
  • Web interface to view messages (plain text, HTML or source)

    • Supports RFC2047 encoded headers
  • Real-time updates using EventSource
  • Release messages to real SMTP servers
  • Chaos Monkey for failure testing

  • HTTP API to list, retrieve and delete messages

    • See APIv1 and APIv2 documentation for more information
  • HTTP basic authentication for MailHog UI and API
  • Multipart MIME support
  • Download individual MIME parts
  • In-memory message storage
  • MongoDB and file based storage for message persistence
  • Lightweight and portable
  • No installation required
sendmail
mhsendmail is a sendmail replacement for MailHog.
It redirects mail to MailHog using SMTP.
You can also use MailHog sendmail ... instead of the separate mhsendmail binary.
Alternatively, you can use your native sendmail command by providing -S, for example:
/usr/sbin/sendmail -S mail:1025
For example, in PHP you could add either of these lines to php.ini:
sendmail_path = /usr/local/bin/mhsendmail
sendmail_path = /usr/sbin/sendmail -S mail:1025

Web UI
Screenshot of MailHog web interface
Contributing
MailHog is a rewritten version of MailHog, which was born out of M3MTA.
Clone this repository to $GOPATH/src/github.com/mailhog/MailHog and type make deps.
See the Building MailHog guide.
Requires Go 1.4+ to build.
Run tests using make test or goconvey.
If you make any changes, run go fmt ./... before submitting a pull request.
Licence
Copyright ©‎ 2014 - 2017, Ian Kent (http://iankent.uk)
Released under MIT license, see LICENSE for details.
About
Web and API based SMTP testing
Resources
Readme
MIT license
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
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MailHog DownloadGoDocBuild Status
Inspired by MailCatcher, easier to install.
  • Download and run MailHog
  • Configure your outgoing SMTP server
  • View your outgoing email in a web UI
  • Release it to a real mail server
Built with Go - MailHog runs without installation on multiple platforms.
Overview
MailHog is an email testing tool for developers:
  • Configure your application to use MailHog for SMTP delivery
  • View messages in the web UI, or retrieve them with the JSON API
  • Optionally release messages to real SMTP servers for delivery
Installation
Manual installation
Download the latest release for your platform. Then
read the deployment guide for deployment options.
MacOS
brew update && brew install mailhog
Then, start MailHog by running mailhog in the command line.
Debian / Ubuntu
sudo apt-get -y install golang-go
go get github.com/mailhog/MailHog
Then, start MailHog by running /path/to/MailHog in the command line.
E.g. the path to Go's bin files on Ubuntu is ~/go/bin/, so to start the MailHog run:
~/go/bin/MailHog
FreeBSD
pkg install mailhog
sysrc mailhog_enable="YES"
service mailhog start
Docker
Run it from Docker Hub or using the provided Dockerfile
Configuration
Check out how to configure MailHog, or use the default settings:
  • the SMTP server starts on port 1025
  • the HTTP server starts on port 8025
  • in-memory message storage
Features
See MailHog libraries for a list of MailHog client libraries.
  • ESMTP server implementing RFC5321
  • Support for SMTP AUTH (RFC4954) and PIPELINING (RFC2920)
  • Web interface to view messages (plain text, HTML or source)

    • Supports RFC2047 encoded headers
  • Real-time updates using EventSource
  • Release messages to real SMTP servers
  • Chaos Monkey for failure testing

  • HTTP API to list, retrieve and delete messages

    • See APIv1 and APIv2 documentation for more information
  • HTTP basic authentication for MailHog UI and API
  • Multipart MIME support
  • Download individual MIME parts
  • In-memory message storage
  • MongoDB and file based storage for message persistence
  • Lightweight and portable
  • No installation required
sendmail
mhsendmail is a sendmail replacement for MailHog.
It redirects mail to MailHog using SMTP.
You can also use MailHog sendmail ... instead of the separate mhsendmail binary.
Alternatively, you can use your native sendmail command by providing -S, for example:
/usr/sbin/sendmail -S mail:1025
For example, in PHP you could add either of these lines to php.ini:
sendmail_path = /usr/local/bin/mhsendmail
sendmail_path = /usr/sbin/sendmail -S mail:1025

Web UI
Screenshot of MailHog web interface
Contributing
MailHog is a rewritten version of MailHog, which was born out of M3MTA.
Clone this repository to $GOPATH/src/github.com/mailhog/MailHog and type make deps.
See the Building MailHog guide.
Requires Go 1.4+ to build.
Run tests using make test or goconvey.
If you make any changes, run go fmt ./... before submitting a pull request.
Licence
Copyright ©‎ 2014 - 2017, Ian Kent (http://iankent.uk)
Released under MIT license, see LICENSE for details.
About
Web and API based SMTP testing
Resources
Readme
MIT license
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
MailHog DownloadGoDocBuild Status
Inspired by MailCatcher, easier to install.
  • Download and run MailHog
  • Configure your outgoing SMTP server
  • View your outgoing email in a web UI
  • Release it to a real mail server
Built with Go - MailHog runs without installation on multiple platforms.
Overview
MailHog is an email testing tool for developers:
  • Configure your application to use MailHog for SMTP delivery
  • View messages in the web UI, or retrieve them with the JSON API
  • Optionally release messages to real SMTP servers for delivery
Installation
Manual installation
Download the latest release for your platform. Then
read the deployment guide for deployment options.
MacOS
brew update && brew install mailhog
Then, start MailHog by running mailhog in the command line.
Debian / Ubuntu
sudo apt-get -y install golang-go
go get github.com/mailhog/MailHog
Then, start MailHog by running /path/to/MailHog in the command line.
E.g. the path to Go's bin files on Ubuntu is ~/go/bin/, so to start the MailHog run:
~/go/bin/MailHog
FreeBSD
pkg install mailhog
sysrc mailhog_enable="YES"
service mailhog start
Docker
Run it from Docker Hub or using the provided Dockerfile
Configuration
Check out how to configure MailHog, or use the default settings:
  • the SMTP server starts on port 1025
  • the HTTP server starts on port 8025
  • in-memory message storage
Features
See MailHog libraries for a list of MailHog client libraries.
  • ESMTP server implementing RFC5321
  • Support for SMTP AUTH (RFC4954) and PIPELINING (RFC2920)
  • Web interface to view messages (plain text, HTML or source)

    • Supports RFC2047 encoded headers
  • Real-time updates using EventSource
  • Release messages to real SMTP servers
  • Chaos Monkey for failure testing

  • HTTP API to list, retrieve and delete messages

    • See APIv1 and APIv2 documentation for more information
  • HTTP basic authentication for MailHog UI and API
  • Multipart MIME support
  • Download individual MIME parts
  • In-memory message storage
  • MongoDB and file based storage for message persistence
  • Lightweight and portable
  • No installation required
sendmail
mhsendmail is a sendmail replacement for MailHog.
It redirects mail to MailHog using SMTP.
You can also use MailHog sendmail ... instead of the separate mhsendmail binary.
Alternatively, you can use your native sendmail command by providing -S, for example:
/usr/sbin/sendmail -S mail:1025
For example, in PHP you could add either of these lines to php.ini:
sendmail_path = /usr/local/bin/mhsendmail
sendmail_path = /usr/sbin/sendmail -S mail:1025

Web UI
Screenshot of MailHog web interface
Contributing
MailHog is a rewritten version of MailHog, which was born out of M3MTA.
Clone this repository to $GOPATH/src/github.com/mailhog/MailHog and type make deps.
See the Building MailHog guide.
Requires Go 1.4+ to build.
Run tests using make test or goconvey.
If you make any changes, run go fmt ./... before submitting a pull request.
Licence
Copyright ©‎ 2014 - 2017, Ian Kent (http://iankent.uk)
Released under MIT license, see LICENSE for details.
About
Web and API based SMTP testing
Resources
Readme
MIT license
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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MailHog DownloadGoDocBuild Status
Inspired by MailCatcher, easier to install.
  • Download and run MailHog
  • Configure your outgoing SMTP server
  • View your outgoing email in a web UI
  • Release it to a real mail server
Built with Go - MailHog runs without installation on multiple platforms.
Overview
MailHog is an email testing tool for developers:
  • Configure your application to use MailHog for SMTP delivery
  • View messages in the web UI, or retrieve them with the JSON API
  • Optionally release messages to real SMTP servers for delivery
Installation
Manual installation
Download the latest release for your platform. Then
read the deployment guide for deployment options.
MacOS
brew update && brew install mailhog
Then, start MailHog by running mailhog in the command line.
Debian / Ubuntu
sudo apt-get -y install golang-go
go get github.com/mailhog/MailHog
Then, start MailHog by running /path/to/MailHog in the command line.
E.g. the path to Go's bin files on Ubuntu is ~/go/bin/, so to start the MailHog run:
~/go/bin/MailHog
FreeBSD
pkg install mailhog
sysrc mailhog_enable="YES"
service mailhog start
Docker
Run it from Docker Hub or using the provided Dockerfile
Configuration
Check out how to configure MailHog, or use the default settings:
  • the SMTP server starts on port 1025
  • the HTTP server starts on port 8025
  • in-memory message storage
Features
See MailHog libraries for a list of MailHog client libraries.
  • ESMTP server implementing RFC5321
  • Support for SMTP AUTH (RFC4954) and PIPELINING (RFC2920)
  • Web interface to view messages (plain text, HTML or source)

    • Supports RFC2047 encoded headers
  • Real-time updates using EventSource
  • Release messages to real SMTP servers
  • Chaos Monkey for failure testing

  • HTTP API to list, retrieve and delete messages

    • See APIv1 and APIv2 documentation for more information
  • HTTP basic authentication for MailHog UI and API
  • Multipart MIME support
  • Download individual MIME parts
  • In-memory message storage
  • MongoDB and file based storage for message persistence
  • Lightweight and portable
  • No installation required
sendmail
mhsendmail is a sendmail replacement for MailHog.
It redirects mail to MailHog using SMTP.
You can also use MailHog sendmail ... instead of the separate mhsendmail binary.
Alternatively, you can use your native sendmail command by providing -S, for example:
/usr/sbin/sendmail -S mail:1025
For example, in PHP you could add either of these lines to php.ini:
sendmail_path = /usr/local/bin/mhsendmail
sendmail_path = /usr/sbin/sendmail -S mail:1025

Web UI
Screenshot of MailHog web interface
Contributing
MailHog is a rewritten version of MailHog, which was born out of M3MTA.
Clone this repository to $GOPATH/src/github.com/mailhog/MailHog and type make deps.
See the Building MailHog guide.
Requires Go 1.4+ to build.
Run tests using make test or goconvey.
If you make any changes, run go fmt ./... before submitting a pull request.
Licence
Copyright ©‎ 2014 - 2017, Ian Kent (http://iankent.uk)
Released under MIT license, see LICENSE for details.
About
Web and API based SMTP testing
Resources
Readme
MIT license
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
MailHog DownloadGoDocBuild Status
Inspired by MailCatcher, easier to install.
  • Download and run MailHog
  • Configure your outgoing SMTP server
  • View your outgoing email in a web UI
  • Release it to a real mail server
Built with Go - MailHog runs without installation on multiple platforms.
Overview
MailHog is an email testing tool for developers:
  • Configure your application to use MailHog for SMTP delivery
  • View messages in the web UI, or retrieve them with the JSON API
  • Optionally release messages to real SMTP servers for delivery
Installation
Manual installation
Download the latest release for your platform. Then
read the deployment guide for deployment options.
MacOS
brew update && brew install mailhog
Then, start MailHog by running mailhog in the command line.
Debian / Ubuntu
sudo apt-get -y install golang-go
go get github.com/mailhog/MailHog
Then, start MailHog by running /path/to/MailHog in the command line.
E.g. the path to Go's bin files on Ubuntu is ~/go/bin/, so to start the MailHog run:
~/go/bin/MailHog
FreeBSD
pkg install mailhog
sysrc mailhog_enable="YES"
service mailhog start
Docker
Run it from Docker Hub or using the provided Dockerfile
Configuration
Check out how to configure MailHog, or use the default settings:
  • the SMTP server starts on port 1025
  • the HTTP server starts on port 8025
  • in-memory message storage
Features
See MailHog libraries for a list of MailHog client libraries.
  • ESMTP server implementing RFC5321
  • Support for SMTP AUTH (RFC4954) and PIPELINING (RFC2920)
  • Web interface to view messages (plain text, HTML or source)

    • Supports RFC2047 encoded headers
  • Real-time updates using EventSource
  • Release messages to real SMTP servers
  • Chaos Monkey for failure testing

  • HTTP API to list, retrieve and delete messages

    • See APIv1 and APIv2 documentation for more information
  • HTTP basic authentication for MailHog UI and API
  • Multipart MIME support
  • Download individual MIME parts
  • In-memory message storage
  • MongoDB and file based storage for message persistence
  • Lightweight and portable
  • No installation required
sendmail
mhsendmail is a sendmail replacement for MailHog.
It redirects mail to MailHog using SMTP.
You can also use MailHog sendmail ... instead of the separate mhsendmail binary.
Alternatively, you can use your native sendmail command by providing -S, for example:
/usr/sbin/sendmail -S mail:1025
For example, in PHP you could add either of these lines to php.ini:
sendmail_path = /usr/local/bin/mhsendmail
sendmail_path = /usr/sbin/sendmail -S mail:1025

Web UI
Screenshot of MailHog web interface
Contributing
MailHog is a rewritten version of MailHog, which was born out of M3MTA.
Clone this repository to $GOPATH/src/github.com/mailhog/MailHog and type make deps.
See the Building MailHog guide.
Requires Go 1.4+ to build.
Run tests using make test or goconvey.
If you make any changes, run go fmt ./... before submitting a pull request.
Licence
Copyright ©‎ 2014 - 2017, Ian Kent (http://iankent.uk)
Released under MIT license, see LICENSE for details.
About
Web and API based SMTP testing
Resources
Readme
MIT license
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages