As far as I can see there is no option to sort the list of tags that opens when applying tags to e-mails. I use release 145.0 of Thunderbird, but this problem existed from the beginning. It should be possible to change the sorting order of the list of tags in Thunderbird's settings: It is only possible to add, delete or edit tags. Only name and colour might be edited. The sorting order of the tags can not be changed, nor do they appear at least alphabetically. Which leads to a list of tags in which the tag 'Zugangsdaten' appears before a tag 'Chor'. It should be possible to search for a specific tag in the list that opens when applying tags to e-mails. It should be possible to group tags in the list of tags: I’ve already tried to do this by starting names of tags belonging together with a word or ancronym like 'Chor:', which would only work, if the tag list would be at least sorted alphabetically. Of course all of this can be done by the Add-on Tag Popup, but after Thunderbird updates are released monthly it happened more than once that no compatible update of the Add-on is available. And working with the build-in list is not satisfactory. I also believe, that these features are basically and essentially for tagging e-mails. Therefore I'd like to encourage Thunderbird's developpers to improve this.
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