How to make Auto-Response Email appear as a reply to the user's original email?

[IshitaRana]

Hi,

I'm trying to configure auto-response emails in EspoCRM (for example, when a Case is created via an incoming email). The auto-response gets sent correctly, but it always goes out as a new email thread.

What I want is for the auto-response to appear as a reply to the original email the user sent, so that it stays in the same thread (i.e., same subject with Re:, and proper headers like In-Reply-To and References).

Is there any way to achieve this behavior in EspoCRM?
Do I need to manually set headers or is there a configuration option or extension that supports this?

email EspoCRM Forum

[yuri]

Hi,

The In-Reply-To header is supposed to be added for Group Email Account auto-replies.

Here's the code: https://github.com/espocrm/espocrm/b...Fetch.php#L198

We will check this functionality.

[yuri]

Do you mean the auto-response is not related to the original email in Espo or it's not related to the thread for the sender who received that auto-response (in their email client)?

[yuri]

Hi,

We did some tests. Email services may intentionally not relate auto-reply emails even if the In-Reply-To is present.

What may matter, is the subject. The subject of the auto-reply email must contain the original subject.

You can specify the following subject for the email template you use for auto-reply:

Re: {Email.subject}

In this case, both Gmail and Microsoft will preserve the reply chain.