Compare/Head to head

GMass vs Mailshake

Same facts, side by side: starting price, free tier, MCP, API and what each one is actually built for.

Starting price

GMass

$20/mo Free trial

Mail merge and cold email that runs inside Gmail. Standard is $29.95/mo, or $20/mo billed yearly at $249.

Where GMass fits

  • People who already send from Gmail
  • Small teams running mail merges
  • Senders who want follow-ups on Premium
  • Teams that later need inbox rotation

Mailshake

$25/mo

Simple email campaigns, drips and follow-ups for small outreach teams, from $25/mo billed annually. You bring your own mailbox, and there is no free trial.

Where Mailshake fits

  • Small sales or recruiting teams sending drips
  • Agencies that want simple campaigns, not infrastructure
  • Buyers who will bring their own mailbox
  • Teams that do not need LinkedIn in the sequencer

At a glance

DetailGMassMailshake
Starting price$20/mo$25/mo
Free tier–No–No
Free trialYesNot on record
MCP server–No–No
Public API✓Yes–No
Listed underLead generation, OutreachLead generation, Outreach
CapterraNot enough reviews4.6 from 161 reviews

Where they pull apart

GMass

Stands out: Every plan sends unlimited emails from your own Gmail account and includes free address verification.

Watch out: Standard has no follow-up sequences, A/B tests or API. Those start on Premium at $39.95/mo, and inbox rotation needs Professional.

Not the right fit for

  • Teams not on Gmail or Google Workspace
  • Buyers who need sequences on the cheapest plan

Mailshake

Stands out: Straightforward drips without a mailbox-farm product to manage.

Watch out: No free trial. The vendor takes payment up front.

Not the right fit for

  • Teams farming dozens of sending accounts
  • Buyers who want a free trial or MCP

Pros and cons

GMass

  • Unlimited emails on every plan
  • Works inside Gmail
  • Standard from $20/mo billed yearly
  • No sequences on Standard
  • API starts on Premium
  • Gmail and Google Workspace only

Mailshake

  • Simple drips with your own mailbox
  • Clear public pricing
  • A/B testing and warmup from the entry plan
  • No free trial
  • No MCP
  • Email only, no LinkedIn channel

What each one costs

GMass

$20/mo

Standard is $20/month billed yearly ($249), or $29.95 monthly. Premium is $29/month yearly ($349), or $39.95 monthly, and adds sequences and the API. Professional is $49/month yearly ($599), or $59.95 monthly, with inbox rotation, and team plans cost more. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Mailshake

$25/mo

Starter is $25 per month billed annually, or $29 monthly, with one sending address and 1,500 sends. Email Outreach is $45 billed annually ($49 monthly) and Sales Engagement, which adds a phone dialer, is $85 billed annually ($99 monthly). Agency pricing is quoted. The vendor says there is no free trial and payment is taken up front. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Common questions

Is GMass cheaper than Mailshake?
GMass starts lower, at $20/mo against $25/mo for Mailshake. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try GMass or Mailshake for free?
Neither carries a free tier on our listing. GMass offers a free trial.

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Editorial listings, never paid rankings. Prices checked 4 Nov 2026. Confirm current terms on the vendor site. Spot an error?