Side by side
Mergo vs YAMM
Both stand on mail merge software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Web
Mergo brings mail merge, campaign tracking, and automation to a Google-centered workflow. The free plan covers an initial campaign, then caps campaigns at 30 emails.
Visit Mergo Free plan ExtensionWeb
YAMM brings personalization, campaign tracking, scheduling, and some CRM workflows to Gmail and Google Sheets. The free tier has a low daily recipient limit; higher limits require an annual Pro plan.
Visit YAMMThe facts
| Mergo | YAMM | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web | Extension, Web |
| Lowest paid plan | Free or on request | Pro Gmail: $25 a year |
| Plans published | 1 | 4 |
| Maker | Not published | Not published |
| Website | mergo.app | yamm.com |
| On mail merge software | #8 of 27 | #12 of 27 |
Mergo: what it does well
- Personalizes messages and attachments with merge fields.
- Tracks opens, clicks, replies, bounces, and unsubscribes.
- Supports scheduled campaigns and automated follow-ups.
- Works with Gmail, Sheets, Docs, Drive, Contacts, and Forms.
- First campaign is free.
What to know first
- After the first campaign, the free plan allows up to 30 emails per campaign.
- Free-period support is best-effort.
- Deletion requests for Firebase data may take up to 30 days.
YAMM: what it does well
- Personalizes email content, attachments, and recipients.
- Tracks opens, clicks, responses, and bounces.
- Schedules mail merges and follow-up campaigns.
- Free plan includes 20 recipients per day.
- Supports Salesforce and HubSpot workflows.
What to know first
- Free plan is limited to 20 recipients daily.
- Free plan includes best-effort support.
- Pro Gmail is limited to 400 recipients daily.
- Workspace limit depends on account eligibility.

