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由 5t 发表于 Nov. 2, 2022 ·

it helps great . thanks alot.
however, sometimes or fleaqently the mail via Addressbooks Synchronizer on imap mailbox is vanished.
i checked all mail users(all of them thunderbird) and none is using pop3. they are all using imap. And all mail userss spam is OFF.
so why the mail on server is vanish? imap Trash is empty.
i cant find the way for years. please.

thunderbird & addon are newest version. win10, 11

这个评论是针对附加组件的一个早期版本的（4.6）。 

作者 Günter Gersdorf (开发者) 日期 Nov. 2, 2022 ·

Probably one of your users (or on the server) runs a filter which removes messages if they are older than x days? Just a guess.