---
title: "Gmass (@gmass)"
description: "Mail merge and email campaign software for Gmail."
account: "gmass"
---

# Gmass

Mail merge and email campaign software for Gmail.

## APIs

1 public API with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/gmass/feed.md

- [GMass API](https://skmtc.dev/gmass/apis/gmass-api.md): Email campaigns: send mail merge campaigns, manage lists, unsubscribes and sending reports