I have the latest version to date of Worpdress (3.4) and Email Users (4.3.1). The problem is: I cannot send e-mails to individuals.
When I press the send button, I get the following error message: "The email address of the user you are trying to send mail to is not a valid email address format.". I've tried with one and two users.
I tried what's suggested by this post [resolved] Email Users plug-in reporting some valid addresses as invalid., but it still doesn't help.
When I dig in the code, it seems the e-mail address tested is actually empty. If I print out the $recipients array, the e-mail address is there though. Any idea?