Mail Merge for Gmail is an email productivity tool that helps individuals and teams send personalized campaigns directly through Gmail using Google Sheets as a recipient list. Designed for people who want to reach many contacts without composing each message separately, it turns spreadsheet rows into recipient-specific emails and records campaign status alongside the contact details. Users can create or reuse email templates, personalize subject lines and message content, and import their own HTML templates. The service also supports spreadsheet-managed attachments, Cc and Bcc recipients, and unsubscribe handling.

Campaign tools include real-time tracking of delivery, opens, clicks, and replies, with engagement details available in both a dashboard and the spreadsheet. Automated follow-up sequences can skip recipients who have already opened, clicked, or replied. Before sending, deliverability checks identify bounces and account for previous unsubscribes. Mail Merge is built for Google Workspace, offers a free option for up to 50 emails per day, and states that it never reads users’ inboxes.