# Mailmeteor vs GMass — pick by workload, not feature grid

> Mailmeteor for merge-first workflows on a budget, GMass when outreach is the revenue motion. Mailmeteor's Starter tier — verified on their pricing page — runs roughly a fifth of GMass Standard in the price checks we could run, its free tier actually exists, and its new Autopilot follow-ups close part of the sequence gap. GMass answers with the parts Mailmeteor still lacks — A/B testing, triggered sends, API access, and inbox rotation — capabilities that pay for themselves at outreach volume and are dead weight for a newsletter.

Human page: https://testedactually.com/gmail-automation/mailmeteor-vs-gmass/
Mirror: https://testedactually.com/gmail-automation/mailmeteor-vs-gmass.md
Updated: 2026-09-18

## Mailmeteor vs GMass: the short version

**Mailmeteor vs GMass**

|  | Mailmeteor | GMass |
| --- | --- | --- |
| Best for | mail merge from Gmail and Google Sheets on a free tier | cold outreach with sequences and auto follow-ups inside Gmail |
| Free tier | Free plan — 50 emails/day, 500 emails/month, Mailmeteor branding included | No free plan — trial only |
| Paid from | $5.99/user/mo | $29.95/mo |
| Mail merge | Yes, from Google Sheets | Yes |
| Auto follow-ups | Yes — Autopilot | Yes |
| CRM | No | No |
| Sequences | Yes — paid tiers | Yes |
| Email tracking | Yes | Yes |
| AI writing | Yes — AI Email and AI labels | Yes |
| A/B testing | — | Yes |
| API access | — | Higher tiers |
| AI crawler policy | open | open |

## Don't use it if

- **GMass**: you want a free tier — GMass is trial-only, and you should prove your campaign works before renting it.
- **Mailmeteor**: your campaigns live or die on A/B tests, triggered sends, or API-driven automation — that is GMass's product, and Mailmeteor does not fake it.
- **Mailmeteor**: you want to manage the campaign from the Gmail compose window — it runs from Google Sheets, not from Chrome.

## The actual difference

Both tools send personalized email from your Gmail account. The fork in the
road used to be what happens after the send — Mailmeteor stopped, GMass
chased. That fork has partially closed: Mailmeteor's paid tiers now carry
Autopilot follow-ups, sequences, and AI drafting. What has not closed is the
depth gap behind it. GMass sells outreach as a platform: A/B testing,
triggered emails, API access, inbox rotation, verification and deliverability
tooling. Mailmeteor sells a mail merge that learned to follow up. That
difference should decide this comparison before any feature matrix does.

## The price gap, with numbers

Mailmeteor's Starter tier — now verified on their pricing page — runs about
a fifth of GMass Standard on agent-reported USD pricing, and Mailmeteor's
free plan (50 sends a day, branding included) has no GMass equivalent —
GMass is trial-only. One honesty note: GMass renders its prices with
JavaScript and geo-localizes them (our check saw A$46/A$62 from an
Australian vantage), so the GMass ladder carries an unconfirmed flag;
agent-reported figures are $29.95/$39.95/$59.95. The verified dates and
source URLs for both vendors are in the table above, and if the numbers have
moved, the sources will show it.

## Workflow, honestly compared

GMass runs from a Chrome extension inside Gmail: compose in Gmail, click
"build a campaign," manage bounces and replies in-thread. Mailmeteor runs
from Google Sheets: the sheet is the campaign, Gmail is just the pipe — with
Autopilot now handling the chasing from the same sheet. Sheet people will
find GMass's extension indirect; Gmail people will find Sheets
administrative. You will use one of these UIs every day, so pick the one you
want to live in.

## Our verdict in one line each

Mailmeteor if the job is a personalized send to a list you manage in a
spreadsheet — with follow-ups now included on the way up the ladder. GMass if
the job is campaigns you need to start, test, and chase at volume.
Everything else on both pricing pages is negotiable detail.

## FAQ

### Is GMass better than Mailmeteor for cold email?

Still yes, but the gap narrowed. Mailmeteor's paid tiers now include sequences, Autopilot follow-ups, and AI drafting. GMass keeps the outreach-native depth — A/B testing, triggered emails, API and Zapier access, inbox rotation, deliverability tooling — which matters at campaign volume, not at newsletter volume.

### Which is cheaper, Mailmeteor or GMass?

Mailmeteor, in every configuration we checked. Its Starter tier runs about a fifth of GMass Standard's reported monthly price, and Mailmeteor has a real free plan (50 emails a day, branding included) while GMass is trial-only. Current numbers with verified dates are in the comparison table above.

### Do both work with Google Sheets?

Mailmeteor is a Sheets add-on — the sheet is the campaign. GMass reads from Sheets too but is driven from inside Gmail via its Chrome extension. Same data source, different cockpit.

### Which one is safer for my Gmail account?

Both send through your own Gmail account, so both inherit Google's daily quotas (about 500/day consumer, 2,000/day Workspace). Your risk tracks your volume, not your vendor. Warm up, respect the quota, and either tool is as safe as your list hygiene.

### Can I use Mailmeteor and GMass together?

Technically yes, but it is a bad sign. If you need GMass's outreach depth and Mailmeteor's free merge sends, you have outgrown one tool — pick the outreach platform and consolidate, or you will manage the same list in two places.


## Sources

- https://mailmeteor.com/pricing — checked 2026-09-18, confidence: documented
- https://mailmeteor.com/ — checked 2026-09-18, confidence: documented
- https://mailmeteor.com/pricing — checked 2026-09-18, confidence: unconfirmed
- https://mailmeteor.com/affiliates — checked 2026-09-18, confidence: unconfirmed
- https://www.gmass.co/pricing — checked 2026-09-18, confidence: unconfirmed
- https://www.gmass.co/ — checked 2026-09-18, confidence: documented
- https://www.gmass.co/ — checked 2026-09-18, confidence: unconfirmed