If an email bounces, we will retry for up to 72 hours. If the email is unable to be delivered within the last 72 hours, it will expire and be marked as Bounced - Expired.
Bounced emails are commonly due to SMTP 4.X.X errors or SMTP 5.X.X errors, which cause an email to be undeliverable:
Let us know how we’re doing! Please rate this page:
Please note, we cannot resolve account and login issues reported on GitHub. Contact support for account assistance.
Thanks for helping us improve our docs!