App Icon
Mail Merge with Google Sheets and Google Mail. Send easy and fast personalized emails! The app is complete free and not limited!
Works with:
GSM is an very easy to use and not limited mail merge application to automate your email marketing campaigns.

Create a regular email template in Gmail (saved as draft) and enter your recipients in Google Sheets. 

You can format and style your email directly in Gmail. 
Add images, tables, attachments, ...


- Send up to 1500 Email/day! 
You can send with GSM as many Emails as your Google Account allows!

- Mail merge 
Send personalized emails with Google Sheets and Google Mail, easy and fast.

- Unubscribe
Handle automatically unsubscriptions

- Failed to deliver 
Process automatically all 'failed to delivered' emails.

- Optimize and clean up your records!
Identify invalid, duplicate and junk email addresses with 1 click.

- Campaign History
Campaign history and results

- Support of Google Sheets "Filter" function. 
Pick and reach your target group without a hassle. Super easy and really useful!

- Send emails with custom attachments
Send individual attachments for different recipients.

- Tracking with Google Analytics
Monitor your campaigns, email opens and clicks on links.

- SendAs 
Send emails with an alias address (defined in your Gmail settings) 

We try to use as few permissions as possible and so GSM has no external communication or data exchange! Nothing leaves your account, except the emails you sent. All granted permissions (Drive, Sheets, Gmail, ...) are internal only - and GSM does not read your documents at all. 

Why do we need the Google Drive permission?
To handle filters in sheets and to support custom email attachments - nothing more! But, as mentioned above - we do not read your documents and we do not exchange data with other websites or services. 

This application is free and has no functional limitations. The number of emails/day is NOT limited by GSM! The daily limit is defined by your Google Account!

The limits by Google are typically: 100/day for private accounts and 1500/day for business accounts. Please keep in mind: THIS LIMITS ARE DEFINED BY YOUR GOOGLE ACCOUNT - NOT BY GSM!

GSM. A powerful and easy to use email marketing solution for your business.
Happy mailing, klaus

GSM Homepage:
Additional information
PricingNot available
Trader status unspecified
SupportNot available
Privacy policy
Terms of service
GSM MailMerge will ask for the permissions shown below. Learn more
GSM MailMerge will need access to your Google account
This will allow GSM MailMerge to :
See and download all your Google Drive files
View and manage spreadsheets that this application has been installed in
Manage drafts and send emails
Display and run third-party web content in prompts and sidebars inside Google applications
Send email as you
See your primary Google Account email address
See your personal info, including any personal info you've made publicly available
Clear search
Close search
Google apps
Main menu