Paste a CSV. Write one email with {{firstName}} variables. Send hundreds. Each one personal, from your real Gmail address. No tracking, no relays, no separate dashboard. A Chrome extension that lives in your Gmail compose window. Try free for 7 days.

Hey hunters 👋 I built Postmerge because I kept needing to send the same email to 30+ people slightly personalized. So Postmerge is an extension that adds a "Mail Merge" button to Gmail's compose window. Paste a list of recipients (CSV, Sheets range, or just emails and it auto-detects), write your email once with {{firstName}}-style variables, hit send. Each one goes from your real Gmail address, lands in your real Sent folder, and looks like an email a human wrote. What it doesn't do: • No tracking pixels - no opens, no clicks • No data sent to my servers other than your subscription status • No relay - sends through the Gmail API directly from your browser • No "sent via Postmerge" suffix $15/month after a 7-day free trial. Polar handles billing. Would love your feedback. What's missing, what's confusing, what'd make it stick. Reply and I'll get back today. Best, Clinton

@clint1 This is exactly the right approach for a mail merge tool—keeping it simple, private, and native to Gmail makes a huge difference. The fact that it sends directly through the Gmail API without relay or tracking is a major trust win, especially for professionals who care about sender reputation.

Congrats on the launch!

@nico_jeannen thank you!

Congrats on the launch!

@nico_jeannen thank you!

Postmerge

Personalized mail merge that lives inside Gmail

Personalized mail merge that lives inside Gmail