GMass and Mailmeteor both come up when people look for a way to find prospects and reach them. Here is how they compare on price, data, sending, channels and AI, using facts from each vendor’s own site, last checked October 1, 2026.
Short answer. GMass is best for gmail and Google Workspace users who want mail merges and cold email campaigns with follow-ups straight from Gmail and Google Sheets. Mailmeteor is best for individuals and small teams who want an easy, cheap mail merge from Gmail, Outlook or spreadsheets.
At a glance
Pricing
| GMass | Mailmeteor | |
|---|---|---|
| Starting price | From $29.95/month | Free plan, then from $5.99/user/month |
| Free plan | No | Free forever: 500 emails/month, 50 emails/day, 3 campaigns, no credit card required |
| Trial | Free to try ('Try GMass for free'); the pricing page does not state trial length or limits | No separate trial; the FAQ points to the free plan (up to 50 emails a day) |
| Plans | Standard (individual): $29.95/month (monthly billing) ($20/month billed yearly ($249/year)) · 1 user; unlimited emails (breaking Gmail limits depends on account configuration), unlimited contacts and campaigns, mail merge personalization, free email address verification, custom tracking links, Spam Solver. No sequences/follow-ups, no API, no A/B testing, no inbox rotation Premium (individual): $39.95/month (monthly billing) ($29/month billed yearly ($349/year)) · Everything in Standard plus sequences and follow-ups, API access (+Zapier), A/B testing, triggered emails. No inbox rotation Professional (individual): $59.95/month (monthly billing) ($49/month billed yearly ($599/year)) · Everything in Premium plus Inbox Rotation (MultiSend) and high-priority support Team (5 users): $175/month (monthly billing) ($145/month billed yearly ($1,750/year)) · All features for 5 users. Other team sizes listed: 10 users $295/month or $2,950/year; 25 users $725/month or $7,250/year; 50 users $1,350/month or $13,500/year; 100 users $2,200/month or $22,000/year | Free: $0 · 500 emails/month, 50/day, 5,000 contacts, 3 campaigns, 1 sender, templates, tracking, scheduling, attachments Starter: $5.99/user/month (monthly billing) ($4.50/user/month billed yearly ($53.99/year)) · 5,000 emails/month, 250/day, 50,000 contacts, unlimited campaigns, 1 sender, Autopilot, email verification, reply detection, Zapier, branding removed Premium: $17.99/user/month (monthly billing) ($13.50/user/month billed yearly ($161.99/year)) · 30,000 emails/month, 1,000/day, 500,000 contacts, 5 senders, 5 follow-ups, 5 Sheet automations, AI email assistant, email warmup (1), custom tracking domain Professional: $35.99/user/month (monthly billing) ($27/user/month billed yearly ($323.99/year)) · 60,000 emails/month, 2,000/day, 1,000,000 contacts, 10 senders, 10 follow-ups, inbox rotation, CRM integration, team analytics, dedicated onboarding, priority support |
Features side by side
| GMass | Mailmeteor | |
|---|---|---|
| Lead data | No B2B lead database; an 'Email List Builder' creates lists by searching your own Gmail account | No B2B lead database; a free Email Finder tool is offered |
| Warm-up | Not listed on its site | Email warmup (1 sender) on Premium and Professional |
| Sending inboxes | Works inside Gmail; third-party SMTP integration (multiple SMTP servers); Inbox Rotation (MultiSend) on Professional and team plans | Works with Gmail, Outlook and Zoho; 1/1/5/10 senders by plan; inbox rotation on Professional |
| Not listed on its site | Not listed on its site | |
| Calls, SMS, WhatsApp | No calling or prospect SMS stated; text.email offers email-to-SMS alerts for replies (notifications to the sender) | Not listed on its site |
| AI writing | ChatGPT can write campaigns; SpinMax AI automatic spintax; AI template builder for HTML layouts; AI suggestions in Spam Solver; Deep Analysis AI campaign reports | AI Email Writer (all plans, also as a free tool) |
| Replies / inbox | Reply management and instant reply/bounce detection; 'The Reply Project' to reply faster. No AI reply classification stated | AI Email Assistant on Premium and up: auto labels with AI, auto drafts in your voice (Gmail only for now) |
| CRM | No native CRM listed; free Google Sheets CRM template; REST API, webhooks and Zapier | CRM logging via BCC (Salesforce, HubSpot); 'CRM Integration' listed on Professional; Zapier from Starter |
| API | REST API, webhooks and Zapier on Premium and above | Not listed on its site |
| Agencies | Not listed on its site | Not listed on its site |
Facts from each vendor’s own pricing and product pages, last checked October 1, 2026: GMass, Mailmeteor. Prices change often, so check before you buy.
Where GMass stands out
- Unlimited emails, contacts and campaigns on every plan
- Runs inside Gmail with deep Google Sheets mail merge (dynamic lists, auto-send to new rows)
- Built-in email verification plus free deliverability tools (inbox/spam tester, SMTP tester, link checker)
- Unlimited auto follow-up stages, A/B testing and triggered emails on Premium
- Low entry price ($20/month billed yearly)
Limitations
- Gmail-centric: works as a Gmail Chrome extension
- Follow-up sequences and API not included in Standard; inbox rotation only on Professional and team plans
- No B2B lead database or LinkedIn outreach offered
- No free plan listed on the pricing page
Where Mailmeteor stands out
- Generous free plan (500 emails/month)
- Very low paid prices from $4.50/user/month billed yearly
- Works from Gmail, Outlook, Google Sheets, Docs and Excel
- Email verification, warmup and AI inbox assistant included in mid plans
Limitations
- Follow-ups only from Premium; Starter has none
- Daily caps per plan (50 to 2,000 emails/day)
- No LinkedIn, calls or B2B lead database offered
- AI email assistant only available for Gmail
And if you don’t have a list yet?
Both tools expect you to decide who to contact. If you sell to small or local businesses, or you want the targeting and the writing done for you, LeadGen.tools reads your website, finds the companies and the person who decides at each one, and writes a different email for every prospect. Free plan, no card.
FAQ
Is GMass cheaper than Mailmeteor?
By listed starting price: GMass from $29.95/month, Mailmeteor free plan, then from $5.99/user/month. Limits per plan differ, so compare what each plan includes.
Does GMass or Mailmeteor have a free plan?
GMass: no free plan listed. Mailmeteor: Free forever: 500 emails/month, 50 emails/day, 3 campaigns, no credit card required.
What is the main difference between GMass and Mailmeteor?
They differ most on: warm-up, crm, api. GMass is best for gmail and Google Workspace users who want mail merges and cold email campaigns with follow-ups straight from Gmail and Google Sheets. Mailmeteor is best for individuals and small teams who want an easy, cheap mail merge from Gmail, Outlook or spreadsheets.
Related comparisons
See it on your own business. Paste your website and watch LeadGen.tools find your best customers, the person who decides at each one, and write the emails. Free, no card. Analyze your website →