Email to a Plusnet account suddenly stops receiving

Question

Since last week using Mail, letters from chimp mail to my plusnet email account are suddenly being arrested as spam.  The fault is not with the webmail server as when I select command i it will forward it to my mac mail.
Any clues appreciated
Richard

Answer 1

Good day Richard,
Thank you for visiting Apple Support Communities.
It sounds like recently, some mail you receive is incorrectly being filtered as junk mail by the Mail application.
First, I'd try the tips in this article to help Mail more accurately filter messages based on your preferences:
Mark messages as junk or not junk
Mail analyzes incoming messages to identify junk mail. It highlights these messages in color (by default, in brown) and adds a banner across the top of the message.
If Mail incorrectly marked a message as junk, click Not Junk in the banner. Or click the Not Junk icon (looks like a thumbs up) in the Mail toolbar.
If Mail failed to identify a message as junk, select the message and click the Junk icon (looks like a thumbs down) in the Mail toolbar.
When you mark messages, Mail updates its junk mail database, so it can identify junk mail more accurately.
From:
Mail (Mavericks): Mark messages
If you don't see a change in this behavior after marking messages for a period of time, you may want to adjust or reset the mail filtering rules:
Mail (Mavericks): Change the junk mail filter
All the best,
Jeremy