GMass: Powerful mail merge for Gmail



Overview
A powerful mass email and mail merge system for Gmail.
The easiest way to transform Gmail into a cold outreach, email marketing, and mail merge platform. ** Join the 400,000+ others who’ve given us an average of 4.8 out of 5 stars ** No credit card required + try all features during your free trial! ----------------------------------------- Key features ----------------------------------------- * Send cold email, email marketing messages, and mail merges to thousands of addresses without ever leaving Gmail * Unlimited contacts, campaigns, AND emails * Also: Unlimited email verification and unlimited spam solving (find out and fix issues before you send) * Mail merge personalization with data from Google Sheets * Personalize each mass email (even send personalized images and attachments) * Break Gmail's limits (and we'll help you do it with our in-house sending servers for both opt-in and cold outreach campaigns) * With GMass MultiSend's inbox rotation feature, you can distribute your campaign across multiple accounts * Hit the inbox, not the spam folder. 99% of GMass users report the best deliverability they’ve ever had * Spam Solver - test messages before you send to find spam rates, then use suggested tweaks to improve * Send auto follow-ups based on opens, clicks, and replies. * ChatGPT campaign creation generates an entire email campaign, creates a follow-up sequence, and handles your GMass settings * AI template builder creates beautiful HTML email layouts right in Gmail * Automatically skip sending emails and automations on holidays, and choose custom days of the week to send/not send a campaign * Send triggered emails that go out automatically when a recipient opens or clicks — reach your prospects when you know they're in their inbox * Automate your outreach by automatically sending to new contacts in your Sheet * Connect your CRM or other apps using the GMass API or Zapier * Track opens, clicks, and replies. With instant reply and bounce detection and some of the most accurate open rates you'll find anywhere * Free email verification verify email addresses before you send your campaigns * Help with the Google/Yahoo bulk sender requirements is here. We've also created a one-of-a-kind system to help users with free Gmail addresses sending campaigns via a SMTP server pass DMARC - https://www.gmass.co/blog/gmail-smtp-dmarc/ * Emails can be sent as replies to the last conversation you had with each recipient * Unsubscribe and bounce management to automatically process unsubs/bounces, suppress future messages to those addresses, and more. * Hundreds of other features: Schedule emails, throttle sending speed, custom tracking links with SSL, A/B testing, spintax for varying up your copy (and AI's SpinMax to vary up every message), quick email polls with custom landing pages, add a countdown timer to emails, drip campaigns, HTML editing, 1-click replies, reusable templates, template sharing for teams, and so much more * And yet, even with all these features... sending an email campaign with GMass is just like using regular Gmail ----------------------------------------- Keep up with GMass ----------------------------------------- Website: https://www.gmass.co What makes GMass different/better? https://www.gmass.co/blog/what-makes-gmass-better/ Quickstart guide: https://www.gmass.co/quickstart-guide Blog: https://www.gmass.co/blog YouTube: https://www.youtube.com/gmass/ Support: https://gmass.co/g/support Latest updates: https://www.gmass.co/updates ----------------------------------------- How does GMass compare to other Gmail extensions? ----------------------------------------- Mixmax: cool extension, but you have to use its external web portal to send campaigns. (Also, Mixmax is much more of a sales team management platform than an email sending platform.) With GMass, the magic happens inside Gmail, using just the red GMass button. Yesware: similar to Mixmax, you can't send campaigns inside Gmail. You have to use their web interface. Plus, both Mixmax and Yesware are more expensive than GMass. Mailtrack and Snov.io: Lets you track individual emails, but with GMass, you can eliminate Mailtrack and Snov.io because GMass can track both individual emails and campaign emails. (Use the GMass button on both one-on-one emails and campaigns.) Copper: Good CRM system, but not meant for sending email campaigns. Same for Gmelius and Streak CRM. Lastly, GMass works seamlessly with Grammarly to ensure your campaigns contain perfect prose and are error-free.
4.8 out of 59.1K ratings
Details
- Version6.0.42
- UpdatedMay 29, 2026
- Size303KiB
- LanguagesEnglish (United States)
- DeveloperAjay GoelWebsite
PO Box 750906 Dayton, OH 45475 USEmail
support@gmass.zendesk.comPhone
+1 937-838-0354 - TraderThis developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.
Privacy
GMass: Powerful mail merge for Gmail has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
GMass: Powerful mail merge for Gmail handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
Support
For help with questions, suggestions, or problems, visit the developer's support site