Thunderbird Tweaks and Plugins
(posted 2018.11.06, last updated 2019.09.16)

I love Thunderbird, it allows me to do so many things and normally the way I like it to be done.

Tweaks

But sometimes I need to tweak some config stuff to make it behave like I want to. Here I will list some config tweaks I used (and would like to remember ;) ).

Some subfolders were not showing, setting this solved it. (X is the Servers ID in TB, i.e. the order you set your accounts up.
```
  mail.server.serverX.using_subscription = true
```
Sometimes deleting a message did not move it to trash, this helps. (TB copies, then deletes, but deletion is a flag, and the folder has to be expunged to remove the flagged ones)
```
  mail.imap.expunge_after_delete = true
```
Check mail for all IMAP folders. Overhead, but may be necessary if SieveFilter is used.
```
  mail.server.default.check_all_folders_for_new = true
```

Plugins

Furthermore I would like to list my most favorite Plugins:

CardBook	Ultimate CardDAV manager	github mozilla
Lightning	Integrated Calendar	mozilla
Sieve	ServerSide Sieve Filter Mgmt	github mozilla
Show InOut	In/Out Icon in Message List	website mozilla
Virtual Identity	Different ID for contacts	github website
Correct Identity	Store used ID for contacts	github mozilla
DKIM Verifier	Verify DKIM signatures

Formerly used addons / Worth mentioning

Inverse SOGo Connector	CardDAV/CalDAV Sync	Calender supports CalDAV, Contacts handled by CardBook

References

http://kb.mozillazine.org/Mail_and_news_settings