Review for Autoarchive by avmaksimov
Rated 5 out of 5 stars
I didn't find a option to set the day before archive my mails. I didn't see anything, how this addons work.But if it will be similar, I and sure many people donate you, because Thunderbird will be better than MS Outlook.
Click menu Edit->Account settings and set all options that you need in a section "Archiving settings".
To create your own collections, you must have a Mozilla Add-ons account.