A solution to emails keep returning to spam folder...
I had a similar problem. The Spam settings were being picked up by my ISP from my mobile. When I looked at the Spam on my mobile, I could mark each individual email as "Not Spam". When I did this, the email appeared in the Inbox not only of my mobile but of my laptop too. A new test email went straight into Inbox of both devices and not into Spam of either.
I hope this helps.
I had a similar problem. The Spam settings were being picked up by my ISP from my mobile. When I looked at the Spam on my mobile, I could mark each individual email as "Not Spam".
When I did this, the email appeared in the Inbox not only of my mobile but of my laptop too.
A new test email went straight into Inbox of both devices and not into Spam of either.
I hope this helps.