You've to enable the notifications:
Weird, I didn't find this page before. Though, even though I din't have email notifications enabled there I got notification bout your subsequent message. I enabled it now, thanks.
4 weeks later - any news on this?
It happened once but I was kinda in a hurry and couldn't gather the logs. It seems it happens less often recently, which is somewhat odd.
OK, I'll do test it.
Btw. why I don't get any notifications from this forum?
1) 91.3.1 (64-bit) (on macos)
2)
British English Dictionary (Marco Pinto) dictionary 3.0.2 true marcoagpinto@mail.telepac.pt
Polish Spellchecker Dictionary dictionary 1.0.20160228.1webext true pl@dictionaries.addons.mozilla.org
Spanish (Venezuela) spell check dictionary dictionary 1.1.18.2webext true es-ve@dictionaries.addons.mozilla.org
Allow HTML Temp extension 7.0 true {532269cf-a10e-4396-8613-b5d9a9a516d4}
Amazon.com extension 1.1 true amazondotcom@search.mozilla.org
Bing extension 1.0 true bing@search.mozilla.org
CompactHeader extension 3.0.0beta5 true {58D4392A-842E-11DE-B51A-C7B855D89593}
DuckDuckGo extension 1.0 true ddg@search.mozilla.org
FolderFlags extension 1.4.2 true {2bc419d0-6cf3-11da-8494-000a95be0946}
Google extension 1.0 true google@search.mozilla.org
Manually sort folders extension 2.1.1 true tbsortfolders@xulforum.org
NestedQuote Remover extension 1.3.0 true {12a1584b-2123-473d-8752-e82e74e3cb1b}
Show Address Only extension 0.2.0 true showaddressonly@rip238.selfip.com
Show InOut extension 3.9 true showInOut@ggbs.de
Stop Ignoring Reply:To extension 1.4 true stopignoringreplyto@gelvins.com
Wikipedia (en) extension 1.0 true wikipedia@search.mozilla.org
Xpunge extension 3.0.0 true {786abda0-fd14-d247-bf69-38b2fc18491b}
English (GB) Language Pack locale 91.0buildid20210805011554 true langpack-en-GB@thunderbird.mozilla.org
Español (España) Language Pack locale 91.0buildid20210805011554 true langpack-es-ES@thunderbird.mozilla.org
DKIM Verifier extension 4.0.0 false dkim_verifier@pl
eCleaner extension 1.4.1-signed.1-let-fixed.1-signed false {c72c0c73-4eb0-4fb3-af0f-074e97326cfd}
Enigmail extension 2.2.4.2 false {847b3a00-7ab1-11d4-8f02-006008948af5}
Mark Read On Reply and Reply-All extension 2.1 false copiedfrommarkreadonreply@aimcosoftware.co.uk
Paranoia extension 0.3.2 false tls-paranoia@gdr.name
Remove Duplicate Messages extension 0.5.2b4 false {a300a000-5e21-4ee0-a115-9ec8f4eaa92b}
Remove Duplicates extension 3.3 false removedupes@dillinger
Show All Body Parts extension 1.3.6 false ShowAllBodyParts@kamens.us
Thunderbird Conversations extension 4.0.5 false gconversation@xulforum.org
ThunderPlunger extension 2.14 false {bfec0750-aa6f-11db-abbd-0800200c9a66}
Toggle Word Wrap extension 1.10 false {cafe3945-058e-47e3-87f8-75bc120b9638}
ToggleReplied extension 0.4 false togglereplied@eyrich-net.org3) where can I find this "error log"?
OK, I was too fast. Couple of hours have passed and the issue came back again.
Any way I could help debug it?
Hi,
I just had the same problem since a couple of weeks. Indeed removing and re-installing the addon seems to help.
Unfortunately I wasn't able to prepare complete case messages (will try to manage that shortly) however problematic mail has following sections:
Content-Type: multipart/signed;
boundary="Apple-Mail=_EE3EC72C-1BBF-4371-93F2-C3AACC07B942";
protocol="application/pgp-signature";
micalg=pgp-sha512
Mime-Version: 1.0 (Mac OS X Mail 11.1 \(3445.4.7\))
…
X-Mailer: Apple Mail (2.3445.4.7)
--Apple-Mail=_EE3EC72C-1BBF-4371-93F2-C3AACC07B942
Content-Type: multipart/alternative;
boundary="Apple-Mail=_496E59ED-40BE-4A97-A5ED-73C1407AA052"
--Apple-Mail=_496E59ED-40BE-4A97-A5ED-73C1407AA052
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
charset=utf-8
…
--Apple-Mail=_496E59ED-40BE-4A97-A5ED-73C1407AA052
Content-Type: multipart/related;
type="text/html";
boundary="Apple-Mail=_487F0D23-111E-400E-9AFF-B310AE3F37F8"
--Apple-Mail=_487F0D23-111E-400E-9AFF-B310AE3F37F8
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
charset=utf-8
<html><head>…</html>=
--Apple-Mail=_487F0D23-111E-400E-9AFF-B310AE3F37F8
Content-Transfer-Encoding: base64
Content-Disposition: inline;
filename=image001.png
Content-Type: image/png;
x-unix-mode=0644;
name="image001.png"
…
--Apple-Mail=_487F0D23-111E-400E-9AFF-B310AE3F37F8
Content-Transfer-Encoding: base64
Content-Disposition: inline;
filename=image002.png
Content-Type: image/png;
x-unix-mode=0644;
name="image002.png"
…
--Apple-Mail=_487F0D23-111E-400E-9AFF-B310AE3F37F8--
--Apple-Mail=_496E59ED-40BE-4A97-A5ED-73C1407AA052--
--Apple-Mail=_EE3EC72C-1BBF-4371-93F2-C3AACC07B942
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename=signature.asc
Content-Type: application/pgp-signature;
name=signature.asc
Content-Description: Message signed with OpenPGP
-----BEGIN PGP SIGNATURE-----
…
-----END PGP SIGNATURE-----
--Apple-Mail=_EE3EC72C-1BBF-4371-93F2-C3AACC07B942--What's more - those are not *encrypted*, only *signed* messages.
I've tried the new version and it seems to be working ok -- even signed messages are detected correctly. Thanks! 
Um Rückfragen vorzubeugen, bitten wir um folgende Angaben:
Hi, appologies for writing in English but my German knowledge is utterly basic (ja/nein/retchts/links…)
I love the above extension and it works great in the past years. However, recently I've noticed that it doesn't detect correctly HTML part if the message has Content-Type: multipart/signed; instead of usual Content-Type: multipart/alternative;
Would it be possible to handle HTML messages that are also signed? Thunderbird can display them just fine if forced in the settings.
