Where is the best place to store mail?

Question

gmail

I have thundebird set up, it has 20 mailboxes from different hosters, including foreign ones like yahoo.com.
I had a need to check mail from a phone, tablet or another PC, the idea of ​​​​collecting mail from all mailboxes into one came to my mind, but here I want to ask Do you have advice on which service is better to use, where it is possible at all, for example, I heard that Yandex has a limit on the number of connected mailboxes.
I would also like to have all sorts of filtering tools and DISABLE the built-in spam filters (it happens that important letters are sent to spam, but I would like to use my own spam filter, mark the letter as spam and letters from this address always go to the trash).
Thanks for answers!

Answer 1

I solved the issue like this:
I took yandex mail as a basis, the interface seemed more friendly to me, the only thing missing is grouping like gmail, like sms in android, that is, mail is saved as "conversations". (correction, there is an option "Group by topic" which does almost the same thing)
I set up a filter on all mailboxes where possible, which, after or before sending to spam, puts all letters back into the inbox.
I chose 10 main / important mailboxes for myself, since more than 10 are not allowed on ya.ru and set up mail collection.
The remaining 10 pieces are configured to be collected in a box that already forwards mail to the main account. A certain pyramid came out, the only negative is that the time for collecting mail through the third knee will be much longer.
Thanks for answers!

Answer 2

If the speed of delivery of letters to the "main" mailbox is not particularly concerned, then gmail (and Yandex, rambler, mail and all-all-all) has a pop3/imap mail picker. In the "secondary" boxes, you can enable filters like "shift all spam to inbox". For forwarding, feint with ears with shifting will not work (the letter is first detected as spam, so it does not go into forwarding), but when mail is collected, for example, by Google, it will go to inbox, not spam.

Answer 3

it is logical to set up forwarding in the boxes themselves and not use the collector and everything will arrive in one box by itself.