Introduction to Mail Merge App Send personalized bulk emails to unlimited recipients with attachments directly from your mobile devices using our Mail Merge Android App. This is Mail Merge with advanced features such as connecting to your Google sheet to import email lists and contacts. You can also upload Microsoft Excel files (.xls, .xlsx, .xlsm, and any type of spreadsheet) as well as CSV, XML, and TXT files. This app also has a built-in rich text editor with the feel of a Microsoft Word docu