Excellent. Just a suggestion... Rated 4 out of 5 stars

This add-on does just what it has to do. But after archiving some folder, the focused message is at the end. I can't explain better since I'm not native English and I can't speak German.

I think this add-on looks for old messages starting from recent ones to older ones, so when it finishes archiving, the focused or selected message that you see when you enter the folder, is always at the end, not at the beginning as usual. So you have to use scrollbars or press some keys to get to the top. Maybe this could be arranged, and then this add-on would by simply perfect. :-)

This review is for a previous version of the add-on (0.9.5). 

Please try new beta

I see what you mean.
This behavior is built-in in Thunderbird if no message was selected.

Please try the new beta version of the addon, it selects the first message before archiving if no message is selected:

https://github.com/Brummolix/AutoarchiveReloaded/releases
/download/0.9.6_beta/AutoarchiveReloaded.0.9.6_beta.xpi_

(rename to xpi after downloading and drop to addons in Thunderbird)

If it does not work please create a new issue under https://github.com/Brummolix/AutoarchiveReloaded/issues
Thanks.