GMass

Mass email and cold outreach in Gmail
📤 Cold Email Sending & SequencingPaidFounded 2015

GMass is a Gmail and Google Workspace extension for mail merge, mass email, and cold outreach with automated follow-ups and a dedicated cold-email sending server. It is popular with solopreneurs, recruiters, and small businesses who live in Gmail.

Pros & cons

✅ Pros

  • Works natively inside Gmail
  • Mail merge plus cold email features
  • Dedicated cold-email sending server option
  • AI templates and spintax

⚠️ Cons

  • Tied to Gmail/Workspace ecosystem
  • Gmail sending limits without server add-on
  • Less suited to large multi-inbox ops

Who it's best for

Gmail users and small teams wanting mail merge and cold email without leaving the inbox.

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