Reply-key variable doesn't get expanded in email custom headers

[Flominator]

Hi there,

while trying to fix the problem that Thunderbird users cannot reply to Discourse notification emails I discovered this matter. Details at Confusion between Reply To and Reply List in email responses - #40 by Flominator

Can we fix this? Is there maybe a patch or something?

Thanks in advance
Flo

[sam (Sam Saffron)]

@zogstrip any ideas about:

@Jonathan5

The underlying problem is that Discourse unnecessarily sets the List-Post header, which makes Thunderbird think it’s a mailing list, which affects the replying options presented by Thunderbird.

[zogstrip (Régis Hanol)]

@nbianca can you add to your list to look into whether we still need the List-Post header?

It seems like it’s no longer required and, even worse, is causing issues

[nbianca (Bianca)]

We removed the List-Post email header and will replace %{replace_key} in custom headers too. Can you please update and check if it solves your problems?

[Flominator]

@nbianca

will replace %{replace_key} in custom headers too

This one I managed to test last evening and it looks good. The other one I will hopefully be able to test this evening or during the weekend. Thank you!

Update: Also works without the custom headers!