I was thinking of using the desktop email clients doing the backup.
but someone who cannot do that is definitely not going to move off of free Gmail/Yahoo mail/...
Re:Moving Away from Gmail
by icebraining on Saturday April 11, 2020 @09:27PM
(#22845440)
In Roundcube, you can just click "More → Download folder" to get a backup of an email folder.
Installing Thunderbird and configuring the account, while more involved than the above, is still within reach of many non-technical users.
I think most people don't backup because they don't think they need to, rather than because they are unable. Unfortunately, they're wrong.
To me, the comment that you can just manage your own backups suggests that the service isn't right for anyone nontechnical or technical people who are too busy to backup a hosted service.