Out-Of-Office Autoresponders Are Being Sent to the From Address and Not the Reply-To

Description description

You receive Out-Of-Office and other Autoresponses to the email address specified in the From Address of a sent email or the Return-Path Address, rather than the Reply-To.

Resolution resolution

The Reply-To email address is only used when an end-user clicks “reply” on the received email. Most, if not all, automated responses will almost always go to the From email address. This behavior is out of Marketo’s control. It’s up to the receiving mail server and mail client whether they choose to Reply-to email address or use the From email address or the return path for automated replies.

The reason behind this is that technical standards require that automated replies only go to the From Address. This is the standards document that those email services are following - https://tools.ietf.org/html/rfc3834- “RFC 3834: Recommendations for Automatic Responses to Electronic Mail.” The behavior is out of Marketo’s control.