Silent failure if IP Pool Name doesn't exist

[DeflateAwning]

The following sending example fails silently if the IP Pool Name does not exist. This is a serious bug, as it can easily go unnoticed.

It fails to send when this happens.

I think the issue may be server-side, and less-so in the client library.

import sendgrid
from loguru import logger
from sendgrid.helpers.mail import (
 Attachment,
 Content,
 Email,
 IpPoolName,
 Mail,
 ReplyTo,
 Subject,
 To,
)

def send_email(
 *,
 message_html: str,
 subject: str,
 to_emails: list[str],
 reply_to_email: str | None = None,
 attachments: list[Attachment] | None = None,
) -> None:
 """Send email using Sendgrid."""
 sendgrid_api_key = "API_KEY_HERE"
 sg_api_client = sendgrid.SendGridAPIClient(api_key=sendgrid_api_key)

 msg = Mail()
 msg.from_email = Email("someone@example.com") # Replace with your own.
 msg.to = [To(i) for i in to_emails]
 msg.subject = Subject(subject)
 msg.content = Content(mime_type="text/html", content=message_html)

 if reply_to_email is not None:
 msg.reply_to = ReplyTo(reply_to_email)

 if attachments:
 msg.attachment = attachments # See doc above for how to craft attachments.

 # Use our dedicated IP pool to increase trust score.
 # Note: If you give a bad/wrong value here, sending fails silently. Wacky.
 msg.ip_pool_name = IpPoolName("ip-pool")

 response = sg_api_client.send(msg)

 if response.status_code != 202: # 202=Accepted
 logger.warning(
 "While sending email, the SendGrid API return a non-success status code "
 f"({response.status_code}). "
 f"Error Message: {response.body}. Headers: {response.headers}."
 )