Experienced in mail merge, but...

I figured everything out, but it wouldnt work with the current Mail application in Yosemite: it doesnt send emails through Mail.app (fail), doesnt pull in the mail.app email accounts (blank), and it doesnt support SMTP with MD5 challenge-response (not in the choices when setting up SMTP manually). So I have all my emails ready to go out, but will have to send them manually anyway unless I either set up my mail server with less secure SMTP, or use another service such as GMail to send my emails, which I dont want to do (I want the emails to be sent using my authentic business account through my own mail server). It was otherwise pretty straightforward to work with if you have any database/mail merge experience you should be OK.

Crisses about SerialMailer Lite