Mailroom / vs Mergo
Mailroom vs Mergo:
the free alternative.
Mergo is a mail-merge add-on that runs inside Gmail and Google Sheets, with tracking and follow-up features on its paid plans. It is a good fit if your list already lives in a Google Sheet and you want to stay inside Google's interface. Mailroom takes the opposite approach: a standalone web app with nothing to install, giving you Gmail's full 500/day allowance at no cost.
TL;DR
Pick Mailroom if
- 300/day free, and Gmail's full 500/day on Pro
- Nothing to install — no add-on, no extension, no Workspace marketplace approval
- Works the same on a personal @gmail.com as on Workspace
- Live per-recipient send progress rather than a spreadsheet column
- Test send to yourself before anyone else receives it
Pick Mergo if
- Runs inside Gmail and Sheets, so your list never leaves Google
- Automated follow-up sequences on paid plans
- Two-way sync with a Google Sheet
- Marketplace distribution and an established user base
Feature-by-feature comparison
Mergo is a Gmail and Google Sheets mail-merge add-on, priced at Paid plans for higher volume, with a free tier of Limited daily quota on the free plan. Mergo runs as Google Workspace add-on for Gmail and Sheets.
| Mailroom | Mergo | |
|---|---|---|
| Price to send 500/day | Free | Paid plan |
| Install required | None | Workspace add-on |
| Works on free @gmail.com | Yes | Yes |
| Recipient list format | CSV upload | Google Sheet |
| Mail merge tags | Yes | Yes |
| Scheduled sends | Yes (free) | Yes |
| Open tracking | Yes (free) | Yes |
| Unsubscribe + suppression list | Built in (free) | Built in |
| Sends from your own Gmail | Yes (Gmail API) | Yes |
FAQ: switching from Mergo
Do I need a Google Sheet to use Mailroom?
No. Mailroom takes a CSV, which you can export from Google Sheets, Excel, Numbers or any CRM. If your list already lives in a Sheet, File → Download → CSV and upload it.
What do I get for free?
300 emails a day, 5,000 a month, two connected Gmail accounts, and every feature — merge tags, scheduling, open tracking, templates, test sends and unsubscribe handling. That is several times the daily allowance of any other free mail-merge tool. Pro (£19.99/month) lifts the cap to Gmail's own limit of 500/day, or 2,000 on Workspace, with unlimited accounts. New accounts get 14 days of Pro free, no card.
Can I move my list from Mergo to Mailroom?
Export your recipients from the Google Sheet as a CSV and upload it. Any column becomes a merge tag, so first_name in the sheet becomes {{first_name}} in your email.
Save the Paid plans for higher volume and just send the email.
Connect Gmail, upload your CSV, hit send. 300 a day free.
Start with Mailroom