# Using subject line for reply-by-email identifier
**URL:** https://meta.discourse.org/t/using-subject-line-for-reply-by-email-identifier/42379
**Category:** Feature
**Created:** [April 11, 2016, 7:46am UTC](https://meta.discourse.org/t/using-subject-line-for-reply-by-email-identifier/42379 "2016-04-11T07:46:28Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@precessor](https://meta.discourse.org/u/precessor)
#### Post date: [April 11, 2016, 7:46am UTC](https://meta.discourse.org/t/using-subject-line-for-reply-by-email-identifier/42379/1 "2016-04-11T07:46:28Z")
I just set up the reply-by-email function as described here:
> [@Set up reply by email with POP3 polling](https://meta.discourse.org/t/set-up-reply-via-email-support/14003):
>
> So you’d like to set up reply via email support for your Discourse forum. mega Reply via email is pre-configured and enabled by default on all [discourse.org](http://discourse.org) hosted sites. The guide below only applies to those self-hosting. Good news! Unlike outgoing email, which is completely unsuitable for typical consumer mail services like GMail, Outlook, Yahoo Mail, etc, incoming reply via-email tends to be extremely low volume. Unless you have a truly massive forum with a zillion people replying to no…
It’s working great! 😆 👍
For appearances, I prefer to have the reply domain at my domain rather than [Gmail.com](http://Gmail.com), so I thought about setting up a DNS email forwarder. I hoped that the sub address (address tag) would be preserved.I would continue to POP3 from Gmail, I don’t mind that.
However, this does not seem to be possible:
[http://webmasters.stackexchange.com/q/92236/62822](http://webmasters.stackexchange.com/q/92236/62822)
But a workaround remains, as described in that post: put the string identifier in the subject line as well (and look for it there as well). This would prevent Discourse customers needing to set up their own email server, which is my remaining option (I’m using a DigitalOcean droplet).
May I therefore suggest this feature: put the string identifier if a reply-by-email in the subject line as well as the address tag, and check for it there too.
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### Author:  [@DeanMarkTaylor](https://meta.discourse.org/u/DeanMarkTaylor)
#### Post date: [April 11, 2016, 8:53pm UTC](https://meta.discourse.org/t/using-subject-line-for-reply-by-email-identifier/42379/2 "2016-04-11T20:53:22Z")
> [@precessor](#):
>
> I prefer to have the reply domain at my domain rather than [Gmail.com](http://Gmail.com), so I thought about setting up a DNS email forwarder. I hoped that the sub address (address tag) would be preserved.I would continue to POP3 from Gmail, I don’t mind that.However, this does not seem to be possible:
When automatically forwarding the “`To:`” email address doesn’t change, only the “`Delivered-To:`” is changed.
The “`To:`”, “`CC:`”, “`BCC:`” are the only email header values considered in Discourse.
I describe how to setup forwarding in a way that uses a custom domain here:
[https://meta.discourse.org/t/set-up-reply-via-email-support/14003/48?u=deanmarktaylor](https://meta.discourse.org/t/set-up-reply-via-email-support/14003/48)
And here:
[https://meta.discourse.org/t/set-up-reply-via-email-support/14003/50?u=deanmarktaylor](https://meta.discourse.org/t/set-up-reply-via-email-support/14003/50)
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### Author:  [@precessor](https://meta.discourse.org/u/precessor)
#### Post date: [April 11, 2016, 9:50pm UTC](https://meta.discourse.org/t/using-subject-line-for-reply-by-email-identifier/42379/3 "2016-04-11T21:50:09Z")
I didn’t see that - just what I need! Thanks for posting 😄
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### Author:  [@codinghorror](https://meta.discourse.org/u/codinghorror)
#### Post date: [April 24, 2016, 9:27pm UTC](https://meta.discourse.org/t/using-subject-line-for-reply-by-email-identifier/42379/5 "2016-04-24T21:27:15Z")