Here are a couple more clues...
Just set Joomla global configuration to:
Allow User Registration=No
New User Account Activation=No
Still, no emails sent.
Next, I tested sending mass email and it works perfectly without cbSubs published. So, I published cbSubs and then re-tested sending mass emails and they did not send. I tested this many times with settings both ways and everytime I have cbSubs published the Joomla mass email function will not work. It gives no errors.
Next, I check Joomla global mail settings. It had been set to "php mail function". So, I changed to "sendmail" and now the emails are sent from the Mass Mail function when cbSubs is published and when it is not published.
Maybe it is fixed but... When a user registers with a paid subscription plan and goes through the off-line payment method, no email is sent. But, when I posted an offline payment (which triggers their subscription as being paid) the "Email on first activation" was sent. Is this the correct functionality? I would like an email to be sent to the user right aftet they register, even before we have posted their offline payment.
Thanks,
Brandon