I have a working installation of Discourse setup. I have a test mailgun account setup that is working with this installation. Discourse is successfully sending out verification emails and topic replies. However I am not sure how to properly setup reply by email. For instance when I try to reply to a…

Your first problem is that mailgun is for outgoing emails (exclusively? not sure), but reply-by-email is about incoming email.

Thank you. So for Discourse to work with reply by email, you need to have access to an incoming mail server for the discourse domain name. I my own hosting servers so that would not be a problem. Where would I go to setup the incoming mail server settings?

There is a howto topic here on setting up reply via email, I suggest following that.

Thank you for that. I was able to setup the POP3 polling. Once I have pop3 polling setup I did test. My user replied to a message from a topic via email. The message was sent successfully to the mailbox and according to my server logs, the discourse server did log into the email account via pop3. T…

Ok I got this working. Here was the issue: I am using cPanel for the discourse user. cPanel supports plus addressing however it routes anything that comes after the ‘+’ sign to its own folder. The solution was to create an email filter to route any message that had a plus address in the To header …

Reply By Email Configuration

Support Self-hosting

haydenjames (Hayden James) May 6, 2022, 11:13am 7

Thanks @brianemwd that worked for me.

For anyone else here’s the visual:

Topic		Replies	Views
Reply by email Issues Support	5	1005	July 20, 2026
Set up reply by email with POP3 polling Self-Hosting email , how-to	1	303828	September 2, 2025
Enabling reply_by_email Self-hosting	7	373	October 31, 2025
Reply by email not working (but I'm able to verify each component is working as it should...) Support	0	524	January 28, 2021
No received mails in new Discourse installation Self-hosting	4	2009	December 9, 2019

Reply By Email Configuration

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