Yet Another Mail Merge (YAMM) is an email campaign tool that helps users send personalized mass emails through Gmail using recipient information stored in Google Sheets. Designed to simplify outreach, it lets users prepare a mailing list, create an email draft in Gmail, then launch and monitor the campaign from their spreadsheet. Users can personalize messages with details from spreadsheet columns and import contacts from Google Contacts or supported customer relationship management platforms, including Salesforce, HubSpot, and Copper.

YAMM supports a range of communications, including lead-generation emails, event invitations, promotions, newsletters, surveys, and follow-ups. Its tracking features report opens, clicks, replies, and bounces, helping users assess campaign results. The service integrates with Gmail and Google Sheets, and offers a testing feature so users can check personalization before sending to a larger list. YAMM reports more than 16 million installations, is ISO 27001 certified, and offers customer support. It is available to try for free, with pricing information provided on its website.