Email Users plug-in reporting some valid addresses as invalid.

OK – so a quick update, for those of you that care – or had the same error.

I had migrated my site, and had exported and then imported all users to the new site.

Although the addresses were, in fact, all valid, I had to individually go in and just re-update the user. Not even their address – just open their user options page and hit update at the bottom – poof – all addresses worked. Must have been something funky in the database. Hope this helps!

M.