Help K9 Email not clearing emails on Yahoo

[old.blue]

I've been looking for an answer to this, and can't find one.

K9 syncs with my Yahoo and Gmail accounts. Problem is when I view (or delete) an email in my Yahoo account from my DX, it doesn't mark it as read (or deleted) in Yahoo. Next time I get an email on my DX, it shows the previously read (or deleted) email as unread (or not deleted). If I read them (or delete them) using Yahoo's website, it shows them as read (or deleted) on my DX. I can send emails from K9 from my Yahoo account.

I get new emails on my DX when they are received, but it seems that it doesn't sync correctly when read (or deleted) with Yahoo, like an outgoing setting may be incorrect, but d@mned if I know how to fix it.

 

[old.blue]

The standard email app DOES clear the email from the Yahoo server.

 

[laurie_lu]

I quit using K9 for the same reason due to issues synching to my Gmail account.