As bizarre as it might sound but using a Russian email address might be useful in some scenarios (absolutely not as a main email address though).
They have an email service called Mail.Ru that allows to create unlimited aliases with custom names (e.g. email@example.com). Google Translate is our friend in this journey xD
Its possible to use it for burner emails (public hotspots or other websites where we just need an account without providing any personal information) instead of paying for an additional alias with our secure email provider.
Obviously, this is not good to use with anything that has our private information as we all know the chances are very high that each email is scanned by Russian surveillance and they can access the email account and read emails anytime, but is quite useful for burner emails for accounts with no personal information.
For the main email address, its (as usual) the well-known list of trusted email providers - Proton, Posteo, Tutanota, Mailbox,org and Startmail.