[...]
> I added:
>
>
> user_pref("mail.identity.id1.headers", "archive");
> user_pref("mail.identity.id1.header.archive", "X-No-Archive: yes");
[...]
I quote part of the headers I see in your mail:
| User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101
| Thunderbird/78.3.1
| X-No-Archive: yes
| In-Reply-To: <[🔎] alpine.DEB.2.21.2105150359430.1534@azone.org>
| Content-Language: en-GB
...so it seems to work.
Cheers
- t
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