I had this problem with my old Samsung Aviator running gingerbread. I gave up trying to fix it. Recently I picked up a new Samsung Galaxy S4 and I was surprised that I could delete e-mail from my IMAP cPanel account. Everything worked great for about a month until a week or 2 ago when the delete function stopped working, just like on my old Aviator. /sigh
I'll give the k9 mail app a try. Thanks for the links.
Thanks guys, Well this is an interesting twist - I have been using the default e-mail app successfully for several Month's and it literally happened at the same time across 6 different devices where it stopped working - I suspected that it was a Cpanel (Dovecot) update, but seems not!
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