Ready to test your email?
Create a placement test and send emails to our seed addresses to check deliverability.
How Inbox Placement Testing Works
1
Send Test Emails
Send your email to our 15 seed addresses across Gmail and Google Workspace
2
We Check Placement
Our system scrapes each mailbox to find where your email landed
3
View Results
See inbox rate, spam rate, and promotions placement for each variation
About Our Seed List
Gmail Personal (8 addresses)
Standard Gmail accounts to test personal inbox placement
Google Workspace (7 addresses)
Business Google Workspace accounts across different domains
Our seed list uses real GMass-monitored mailboxes. Results show actual inbox placement, not estimates.