One button to send any kind of email campaign

Newsletters, announcements, cold email campaigns, and transactional email

Start with what you're sending. GMass handles each use case with the right settings and safeguards.

Send to 50...or 50 million

The same basic workflow works at radically different scales. A tennis league, a daily outbound operation, and a company-wide announcement can all start from the same Gmail Compose window.

Edge cases, handled

The weird things that happen five minutes before — or five minutes into — a campaign are where ten years of product decisions start to matter.

Not for everyone

GMass isn't a Step 1, enter a campaign name; Step 2, enter your subject line kind of tool. We give it to you all at once.

If you want a wizard that reveals one setting at a time, GMass may feel like too much. If you want the controls right there when you need them, that's the point.

Let's talk about deliverability

We guarantee 100% of your email will go to the Inbox, you'll get a 80% open rate and a 50% reply rate!
Our mantra is simple: deliverability is a shared responsibility. You control some of the things that determine where your email lands. GMass is responsible for others. The best results happen when both sides do their part.

Teeny tiny learning curve

If you know how to use Gmail, then you know how to use GMass.

1. Open Compose.
2. Add recipients.
3. Write your email.
4. Instead of clicking Gmail's blue Send button, click the GMass button to send it as a campaign.

There’s much more you can do when you want it — personalization, mail merge fields, follow-ups, analytics, deliverability tools, and more. But sending a GMass campaign can be as simple as these four steps.

At least 20% better than your current platform

Not ten times better. Just better in the ways that matter every day — clearer dashboards, better analytics, faster sending, and lower cost.

AI where it's useful. Your where it's not.

Don't use AI to write your campaigns -- everyone will know. But use it to improve it and understand it.

A love affair with Google Sheets

Google Sheets isn't a bolt-on integration in GMass. It's at the center of how lists and personalization work.

Connect a Sheet and each row becomes a recipient, while each column can become a merge field. Names, companies, custom sentences, dates, URLs — whatever you keep in your Sheet can flow straight into each email.

Because GMass reads directly from Google Sheets, your campaign can stay connected to the data you're already working with instead of making you export, import, and maintain another copy of your list.

We are our own biggest user

We’ve sent over 50 million emails with GMass, to run GMass.

We run the email infrastructure for all of our companies on GMass. We use it for announcements to our users, cold email to prospects, and transactional messages like “Thanks for subscribing,” “Why did you cancel?” and “Your email campaign has finished sending.”

That means we depend on GMass for the same kinds of email our customers do — every single day.

Inventing email for 10+ years

GMass has been building and iterating since 2015. Here are a few of our inventions.

It looks like a simple button — but there's a lot behind it.

Our own DKIM stack, an SMTP server farm, unlimited stage sequences, SSL certificates, complex image rendering, conditional logic, and deliverability tools sit behind that button.