Select Mail Merge from the drop down menu and a Mail Merge pop-up menu will appear. To start, launch Microsoft Word on your Mac and click into the Tools menu from the Apple toolbar. Using Microsoft Word, you can link an existing Excel document containing contact information to a Word document, allowing you to pull contact data into labels, letters, and envelopes. Office for Mac (Labels) The latest version of Office for Mac - Office 2011 - has great Mail Merge support. There are a ton of applications for OS X that support Mail Merge, so we've written this article showing some of the best Mail Merge solutions for Mac and how to use them. The feature isoffered by many office applications and connects either an address book application or spreadsheet filled with contacts and pulls their information into a label or email, in turn making it so you don't have to manually copy-and-paste hundreds of contacts into a template by hand. Mail Merge Options - OS X Mail Merge is an absolute godsend when it comes to printing labels and sending mass emails.