GMass and Instantly 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. Instantly is best for senders who need high volume across many inboxes and want lead data, CRM and AI reply handling in one vendor.
At a glance
Pricing
| GMass | Instantly | |
|---|---|---|
| Starting price | From $29.95/month | From $47/month |
| Free plan | No | CRM can be used for free with no credit card (per its CRM page); no free outreach plan listed |
| Trial | Free to try ('Try GMass for free'); the pricing page does not state trial length or limits | Free trial, no credit card required (duration not stated on the pricing page) |
| 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 | Growth (outreach): $47/month · Unlimited email accounts and warmup, 1,000 uploaded contacts, 5,000 emails/month Hypergrowth (outreach): $97/month · 25,000 uploaded contacts, 125,000 emails/month, premium live support Lightspeed (outreach): $358/month · 100,000 uploaded contacts, 500,000 emails/month, SISR system Starter (bundle): $94/month (monthly billing) ($85/month billed yearly) · 5,000 emails/month, 1,000 uploaded contacts, 1,500 credits/month, lead database access, AI Sales Agent |
Features side by side
| GMass | Instantly | |
|---|---|---|
| Lead data | No B2B lead database; an 'Email List Builder' creates lists by searching your own Gmail account | 450M+ B2B lead database, paid with Instantly credits (standalone credit plans or bundles) |
| Warm-up | Not listed on its site | Unlimited email warmup |
| Sending inboxes | Works inside Gmail; third-party SMTP integration (multiple SMTP servers); Inbox Rotation (MultiSend) on Professional and team plans | Unlimited email accounts on every plan |
| 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) | Calls and SMS from the browser in Instantly CRM; WhatsApp not mentioned |
| 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 Copilot for campaign creation, AI personalization |
| Replies / inbox | Reply management and instant reply/bounce detection; 'The Reply Project' to reply faster. No AI reply classification stated | Unibox plus AI Reply Agent (listed from the Scale bundle) |
| CRM | No native CRM listed; free Google Sheets CRM template; REST API, webhooks and Zapier | Built-in CRM (unlimited seats) and integrations with other tools |
| API | REST API, webhooks and Zapier on Premium and above | API and webhooks listed among plan features |
| Agencies | Not listed on its site | White-label agency portal on Hypergrowth and Lightspeed plans (custom subdomain for clients), per its help center |
Facts from each vendor’s own pricing and product pages, last checked October 1, 2026: GMass, Instantly. 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 Instantly stands out
- Unlimited sending accounts and warmup on all plans
- High monthly email volumes (up to 500,000)
- Own 450M+ B2B lead database
- Built-in CRM with calls and SMS, unlimited seats
- AI Reply Agent and AI Sales Agent
Limitations
- Lead data is sold separately as credits unless you buy a bundle
- Uploaded contact limits (1,000 on the entry plans)
- White-label requires Hypergrowth or higher
- LinkedIn outreach is not described on its pricing or home pages
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 Instantly?
By listed starting price: GMass from $29.95/month, Instantly from $47/month. Limits per plan differ, so compare what each plan includes.
Does GMass or Instantly have a free plan?
GMass: no free plan listed. Instantly: CRM can be used for free with no credit card (per its CRM page); no free outreach plan listed.
What is the main difference between GMass and Instantly?
They differ most on: lead data, warm-up, calls, sms, whatsapp, crm. 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. Instantly is best for senders who need high volume across many inboxes and want lead data, CRM and AI reply handling in one vendor.
Related comparisons
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