1.9
Mailman for Google Sheets
SaaS Apps
Mailman is the ONLY open source mail merge tool for Google Sheets.
About Mailman for Google Sheets
The Best Mail Merge Tool for Gmail
Send mass emails with Gmail Reach the inbox, not spam Track results in real-time from Google Sheets (coming soon!) Open source - Designed for privacy
Q: Why create this when there's like a bazillion Add-ons that do the same thing? A: Privacy! Mail merge Add-ons in Google Sheets have a lot of power to read your Sheet and even your Gmail account. By creating our own template system, we don't require access to read your email and thus require fewer permissions than our competitors. While other Add-ons might claim to be privacy-centric, you can never be assured until you see their code.
Features
Alternatives to Mailman for Google Sheets (3)
Magnitude Mail
Magnitude Mail is the easiest way to send bulk emails directly in Google Sheets through your Gmail account. Simply provide a list of emails, create a template and click the button to send. You can also customise your email with the recipient’s name.
2.2 on average 
RangeFlow
Rangeflow helps to automate your email outreach without stepping out of your favorite apps — Google Sheets and Gmail!
1.7 on average 
SendSimple
SendSimple helps you send bulk email from google sheets via Gmail, Amazon SES, Sendgrid and more no limits
2.7 on average Online
Self-Hosted
Google Drive
Software as a Service SaaS
mailmerge
mailing-list
email-campaign
Open Source (Apache-2.0) and Free product.
English
