Is there a mail merge solution on OS X besides Microsoft Office?
1-use Mailchimp (mailchimp.com) it has all the bells and whistles: address list management, import lists from a variety of formats, reports, subscribe/unsubscribe, drag &amp; drop html layouts, etc. etc. All of this in their free product.

2-Go LibreOffice (https://help.libreoffice.org/Writer/Mail_Merge_Wizard). It compares nicely with what Office can do and it is a lot more flexible in the char encoding area. It looks clunkier than Office, but it is free.

Hope it helps