I have multiple POP3 email accounts of different providers in Thunderbird 91.3.0 on Fedora 34. When I start Thunderbird the email accounts are processed sequentially. When the emails of one account are downloaded, Thunderbird proceeds with the next account, until all emails of all accounts are downloaded. Since I have multiple email accounts, the process of downloading all emails takes roughly 1 minute every time I open Thunderbird.

Is there a way to make Thunderbird download all accounts at once (multi-threading)? I mean in parallel instead of sequential, so that Thunderbird doesn't wait for one account to finish before starting with the next account.