How can one find out what is causing wp_mail has been declared by another process or plug

Hey,

How can one find out what is causing . . .

Mandrill: wp_mail has been declared by another process or plugin, so you won't be able to use Mandrill until the problem is solved.

I need to deactivate those declarations used to be able to use the mandrillapp plugin for sending all website email via Mandrill smtp.

:slight_smile: