Review for CatchAll Bird by Tim Scott
Rated 4 out of 5 stars
This is exactly what I thought I'd been needing for years.
My mail provider is expecting accounts, not identities. TB will try to login with the account credentials, using the identity in the 'From:'. If that's what you need, this will work well.
It ran through my 60k old emails in my inbox in a few minutes to generate previously used identities without having to wait for new mails. Now, if it could create accounts in the same way ... I'd just need to delete those identities.
To create your own collections, you must have a Mozilla Add-ons account.