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.

GMass

$29.95/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

$29/mo

Simple email campaigns, drips and follow-ups for small outreach teams, from $29/mo. 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

Detail	GMass	Mailshake
Starting price	$29.95/mo	$29/mo
Free tier	–No	–No
Free trial	Yes	Not on record
MCP server	–No	–No
Public API	✓Yes	–No
Listed under	Lead generation, Outreach	Lead generation, Outreach
Capterra	Not enough reviews	4.6 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

$29.95/mo

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

Checked 19 Sep 2026

Mailshake

$29/mo

Starter is listed at $29 per month with one sending address and 1,500 sends. Email Outreach is $49 and Sales Engagement, which adds a phone dialer, is $99. 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 20 Sep 2026

Common questions

Is GMass cheaper than Mailshake?

Mailshake starts lower, at $29/mo against $29.95/mo for GMass. 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 19 Sep 2026. Confirm current terms on the vendor site. Spot an error?