Note: Mail Merge for Microsoft Access is technically a library, not an Access add-in. Therefore you should not try to install it using Access' add-in manager.
Installation: run setup
connecting: enable mail merge in a selected database
Access Mail Merge is distributed as either a setup program or a zip file.
2. Connect Mail Merge for Microsoft Access with your selected database using the Mail Merge Installer(mailmergeinstaller.mde)
Note that you need to connect every database you want to use 4TOPS Mail Merge with separately.
To get an idea what the program is capable of try out the Demo Database
We bring out improved versions on a regular basis. Therefore it is worthwhile to regularly visit http://www.4tops.com/downloadaccessmailmerge.htm and download the latest version. It is important to use the Access Mail Merge Installer. You will have to explicitly connect the new version with each database that uses access mail merge. Use the Connect button, and when asked go thru the Fix process to prevent compile state problems.