Native e-mail clients still have the advantage of working with any e-mail server, including those that don't serve ads based on analyzing my e-mails. The whole

Native e-mail clients still have the advantage of working with any e-mail server, including those that don't serve ads based on analyzing my e-mails. The whole local e-mail folder can be backed up to your favourite online backup if you feel that it's not safe to keep just a local copy.