GMass in one line: A Chrome extension that turns a Gmail account into a mail merge and cold email tool, with Google Sheets merges, auto follow-ups and optional SMTP sending. Still, it is not the right fit for everyone. Here are 8 alternatives, what each one costs and who each one is best for, using facts from each vendor’s own site.

Why people look for GMass alternatives

• 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

None of these make GMass a bad tool. They just mean another option may fit your budget or your way of prospecting better.

Quick comparison

1. LeadGen.tools

Reads your website, finds real companies that need what you sell (including small local businesses), finds the person who decides at each one, writes a different email for every prospect and sends it with follow-ups from your own inbox.

Pricing

• Free: $0 · A real campaign to 10 prospects with follow-ups, no card
• Personal: $24.99/month · Unlimited campaigns and follow-ups, up to 3 decision makers per company, autopilot, no LeadGen.tools signature
• Business: $59.99/month · 3 sending inboxes, 3 brands, 3 collaborators

Free option: Yes: a real campaign to 10 prospects with follow-ups, no card

Why choose it over GMass

• Chooses your best customer segments from your website, never your competitors
• Finds small and local businesses that B2B databases often miss
• Finds the person who decides at each company, verified emails only
• A different email for every prospect, plus follow-ups that stop on any reply
• Pay per prospect contacted (follow-ups included), free plan to start

Keep in mind

• No inbox warm-up included
• Sends from Gmail or SMTP (no Microsoft 365 connection yet)
• Fewer sending inboxes per plan than volume-focused senders

Best for: Small teams, agencies and founders who want customers found and emails written for them, especially when selling to small or local businesses.

Full comparison: LeadGen.tools vs GMass

2. Smartlead

Cold email platform with unlimited mailboxes, a warm-up pool, a master inbox with AI reply management, a dialer and white-label for agencies.

Pricing

• Base: $39/month (monthly billing) ($32.50/month billed yearly) · 2,000 contacts stored, 6,000 email sends, 2,000 verified prospect emails; no CRM, calls, private infrastructure or API
• Pro: $94/month (monthly billing) ($78.30/month billed yearly) · 30,000 contacts stored, 90,000 email sends, 30,000 verified prospect emails, CRM access; API as add-on
• Unlimited Smart: $174/month (monthly billing) ($144.50/month billed yearly) · Unlimited contacts, 150,000 email sends, 50,000 verified prospect emails, CRM, warmup pool, private OAuth
• Unlimited Prime: $379/month (monthly billing) ($314.60/month billed yearly) · Unlimited contacts, 500,000 email sends, 170,000 verified prospect emails, CRM, calls, private infrastructure, API and webhooks, dedicated manager, 3 SmartServers

Free option: Pricing page offers 50% off the first month on any plan, no credit card required; FAQ links a free trial without stating its length

Why choose it over GMass

• Unlimited mailboxes and, from Unlimited Smart, unlimited contact storage
• Verified prospect emails included in every plan
• AI reply manager in the master inbox
• Built-in dialer on the top plan
• Low per-client white-label price for agencies

Keep in mind

• No free plan
• API is included only on the top plan (add-on below)
• LinkedIn only via third-party integrations

Best for: Agencies and high-volume senders who want unlimited mailboxes, AI reply triage and cheap white-label client access.

3. Mailmeteor

A simple mail merge and email outreach tool for Gmail, Outlook, Google Sheets, Docs and Excel, with a free plan and low per-user pricing.

Pricing

• 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

Free option: Free forever: 500 emails/month, 50 emails/day, 3 campaigns, no credit card required

Why choose it over GMass

• 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

Keep in mind

• 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

Best for: Individuals and small teams who want an easy, cheap mail merge from Gmail, Outlook or spreadsheets.

Full comparison: GMass vs Mailmeteor

4. QuickMail

Cold email and LinkedIn outreach platform focused on deliverability (inbox rotation, warm-up) with unlimited senders and users, aimed largely at lead generation agencies.

Pricing

• Starter: $49/month (monthly billing) · 5,000 emails sent/month, 1,000 uploaded contacts, unlimited email senders, unlimited LinkedIn accounts, unlimited users, 1 workspace, free AutoWarmer with MailFlow, Zapier
• Growth: $99/month (monthly billing) · 100,000 emails sent/month, 25,000 uploaded contacts, unlimited senders, LinkedIn accounts and users, 1 workspace, AutoWarmer, Zapier and API, priority support
• Agency: $299/month (monthly billing) · 500,000 emails sent/month, 100,000 uploaded contacts, unlimited senders, LinkedIn accounts and users, 2 workspaces (+$49 per extra), AutoWarmer, Zapier, API and webhooks, priority support

Free option: 14-day free trial on all plans; card required at signup but no automatic charge when the trial ends

Why choose it over GMass

• No per-seat pricing: unlimited users, email senders and LinkedIn accounts on every plan
• Deliverability tooling included (inbox rotation, warm-up, blacklist monitoring)
• Agency dashboard and workspaces for client management
• Trial does not auto-convert to a paid plan

Keep in mind

• No free plan
• No built-in B2B lead database stated
• Starter caps uploaded contacts at 1,000 and emails at 5,000/month

Best for: Lead generation agencies and teams sending high email volumes across many inboxes who already have their own lead lists.

5. Instantly

Cold email platform with unlimited sending accounts and warmup, a B2B lead database sold as credits, a CRM and AI agents.

Pricing

• 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

Free option: CRM can be used for free with no credit card (per its CRM page); no free outreach plan listed

Why choose it over GMass

• 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

Keep in mind

• 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

Best for: Senders who need high volume across many inboxes and want lead data, CRM and AI reply handling in one vendor.

Full comparison: GMass vs Instantly

6. Woodpecker

Cold email platform priced by contacted prospects, with built-in lead finder, warm-up, inbox rotation and optional LinkedIn steps.

Pricing

• Usage-based (Contacted Prospects): $7 per 100 contacted prospects per month (monthly billing); volume discounts at higher volumes (33% less when paying yearly (exact per-month figure depends on volume)) · Unlimited emails, unlimited email verification (catch-all included), 4 free warm-ups, 100 Lead Finder credits, unlimited team members, unlimited email accounts

Free option: 14-day trial with all features, no credit card required

Why choose it over GMass

• Pay for contacted prospects, with unlimited emails, team members and email accounts
• Unlimited email verification included
• Condition-based campaigns that branch on prospect behavior
• Adaptive sending that detects provider limits to avoid blocks
• 14-day trial with all features and no card

Keep in mind

• LinkedIn, API/integrations and agency panel are paid add-ons
• No free plan
• AI reply detection is described for English replies only

Best for: Teams that want predictable per-prospect pricing and strong deliverability controls, adding LinkedIn or agency tools only if needed.

7. Mailshake

Cold email and sales engagement tool with sequences, an AI email writer, a phone dialer and an optional contact Data Finder.

Pricing

• Starter: $29/month (monthly billing) ($25/month billed yearly) · 1 email address, 1,500 email sends/month, unlimited uploaded contacts, 50 Data Finder credits, unlimited warm-up and campaigns, unlimited email verification, AI email writing
• Email Outreach: $49/month (monthly billing) ($45/month billed yearly) · 2 email addresses, unlimited sends, 50 Data Finder credits, email rotation, unified inbox, Salesforce/Pipedrive/HubSpot integrations, Zapier
• Sales Engagement: $99/month (monthly billing) ($85/month billed yearly) · 10 email addresses, unlimited sends, 2,500 Data Finder credits, 5 phone numbers, unlimited dialer minutes in North America, power dialer, 1-on-1 onboarding
• Agency: Contact sales · All of Sales Engagement plus unlimited email addresses

Free option: No free trial; payment is collected up front (with onboarding and deliverability support)

Why choose it over GMass

• Low entry price ($25/month billed yearly)
• Unlimited warm-up and email verification included
• AI email writer included
• Built-in phone dialer on the Sales Engagement plan

Keep in mind

• No free plan and no free trial (payment up front)
• Starter is limited to 1 email address and 1,500 sends/month
• Priced per user

Best for: Small teams that want a simple, low-cost cold email tool with an optional dialer.

Full comparison: GMass vs Mailshake

8. Snov.io

A sales platform that combines an email finder and verifier, a B2B lead database, email warm-up and email plus LinkedIn outreach campaigns with a built-in CRM.

Pricing

• Trial (free): $0 · Renewable monthly: 50 credits, 100 recipients, 25 enrichment tokens, 1 email warm-up, core tools only
• Starter: $39/month (monthly billing) ($29.25/month billed yearly (save $117/year)) · 1,000 credits, 5,000 recipients, 75 enrichment tokens, 3 email warm-ups, unlimited monthly emails, unlimited team seats, unlimited senders, MCP access
• Pro S: $99/month (monthly billing) ($74.25/month billed yearly (save $297/year)) · 5,000 credits, 25,000 recipients, 150 enrichment tokens, unlimited warm-ups, unlimited monthly emails, unlimited team seats
• Pro M: $189/month · 20,000 credits, 50,000 recipients, 150 enrichment tokens, unlimited warm-ups, unlimited team seats

Free option: Yes. Trial plan renewable monthly: 50 credits, 100 recipients, 25 enrichment tokens, 1 email warm-up, core tools only.

Why choose it over GMass

• Unlimited team seats and unlimited senders on every paid plan
• Email warm-up, 7-tier verification and deliverability checks included
• Email and LinkedIn steps in the same campaign with a shared inbox (LinkedIn as a paid add-on)
• Free Trial plan renews monthly
• Built-in CRM plus 2-way HubSpot and Pipedrive integrations

Keep in mind

• LinkedIn automation is a separate add-on billed per slot ($69/month, or $62/month annually)
• Usage is capped by credits and recipients per plan
• Free plan limited to 50 credits and 100 recipients with core tools only

Best for: Small teams that want lead finding, verification, warm-up and email plus LinkedIn campaigns in one tool without per-seat pricing.

Facts from each vendor’s own pricing and product pages, last checked October 1, 2026: GMass, LeadGen.tools, Smartlead, Mailmeteor, QuickMail, Instantly, Woodpecker, Mailshake, Snov.io. Prices change often, so check before you buy.

FAQ

What is the best alternative to GMass?

It depends on what you need. If you want the tool to find your customers and write the emails for you, LeadGen.tools. If you need the closest like-for-like replacement, look at Smartlead, Mailmeteor, QuickMail.

Is there a free alternative to GMass?

Yes: LeadGen.tools, Mailmeteor, Snov.io offer a free plan.

Which GMass alternative is cheapest?

By listed starting price, LeadGen.tools (Free plan, then from $24.99/month). Compare what each plan includes, since limits differ a lot.