# 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:** 1
**Showing post:** 2

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### Author: ![DeanMarkTaylor](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/deanmarktaylor/32/102462_2.png) [@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")

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> [@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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