What happens when the SMTP server is down?

Problem Statement

This article explains what happens when your SMTP server has downtime and how Chargebee handles email delivery in that case.

Solution

When your SMTP server is down, Chargebee holds the emails and retries delivery after some time. If downtime continues, Chargebee triggers multiple retry attempts.

If multiple retries fail

Chargebee sends a notification:

"This is to inform you that one or more notification email(s) could not be delivered to the intended recipient(s) even after several retry attempts"

Use the error logs between Chargebee and your SMTP server to troubleshoot and fix the issue on your side.