GMass Pricing 2026: What Gmail's Own Limits Cost You
Here is the complete GMass pricing picture across solo, team, and enterprise use. $25/mo looks cheap on paper, but Gmail's own sending caps decide what you can actually do with it.
Bottom line
GMass is the cheapest genuinely usable cold email tool for a solo sender, starting at $25/mo on Standard. The pricing context that matters most is architectural: GMass is not a standalone platform, it is a Chrome extension layered on top of Gmail. That means you inherit Gmail's deliverability reputation, and you also inherit Gmail's sending ceilings, roughly 500 emails a day on a personal account, 2,000 a day on Workspace.
GMass physically cannot push you past those numbers, because Google enforces them at the API layer, not GMass. For a solo operator sending under 2K emails a day who already lives inside Gmail day-to-day, this is genuinely excellent value. For anyone needing more than that, GMass is the wrong architecture entirely, not just an underpowered cheap option.
How Sendbox compares
Sendbox plans start at $99/mo with dedicated IPs and the full deliverability suite included on every tier — no add-ons required.
GMass Plans
| Plan | Price | What you get | Watch out for |
|---|---|---|---|
| Standard monthly (annual discounts available) | $25/mo |
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| Premium monthly (annual discounts available) | $35/mo |
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| Professional monthly (annual discounts available) | $55/user/mo |
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Running the numbers against the Gmail API ceiling
| Usage scenario | Monthly cost | Notes |
|---|---|---|
| Standard, single Gmail account | $25/mo | Somewhere between 500 and 2K sends a day depending on whether the mailbox behind it is personal Gmail or Workspace; Google sets that ceiling, not GMass. |
| Premium, single Gmail account | $35/mo | Adds auto follow-ups, behavior-based filtering, and deeper analytics on top of Standard, but the same Gmail API ceiling still applies. |
| Professional, 5 users | $275/mo (5 x $55) | A team plan with shared templates and analytics, though every individual user is still bound by their own mailbox's Gmail limits. |
| Professional, 10 users | $550/mo | Costs scale in a straight line per seat added; there is no published discount for buying more. |
| ColdSMTP add-on for higher volume | +ColdSMTP fees | A separate SMTP route that gets you past the Gmail caps, running on shared infrastructure with its own pricing outside the Standard or Premium plans. |
Why Google's API, not GMass's own engineering, sets the pricing shape
Most cold email tools own their sending infrastructure end-to-end, they decide daily limits, warmup behavior, routing, IP allocation. GMass owns none of that, because it runs as a Chrome extension sitting on top of Gmail. Sending happens through the Gmail API, and Google enforces every limit involved.
That has two consequences for pricing. First, GMass literally cannot charge for volume it has no way to deliver, so the $25 Standard and $35 Premium price points reflect capacity that is bounded by Google, not by GMass. Second, GMass cannot differentiate on infrastructure quality, since the infrastructure is Gmail's.
What it competes on instead is workflow, mail merge, follow-ups, analytics, team tools, not send capacity. For buyers: GMass fits perfectly if you want a Gmail-native workflow bounded by Gmail's own volume. It is a mismatch entirely if you need to send past Gmail's caps, no matter what you are willing to pay.
Key takeaways
- Google's API sets the send ceiling, not GMass
- There is nothing to charge extra for since GMass cannot deliver more volume than Google allows
- Workflow tools, not infrastructure, are what GMass actually competes on
- A great fit for Gmail-native work, a poor one for volume-heavy outbound
What changes once you add ColdSMTP into the mix
ColdSMTP is GMass's answer for senders who need to get past Gmail's API ceiling. It runs on shared SMTP infrastructure to push volume beyond the standard 500-2K daily cap. Pricing for ColdSMTP sits entirely apart from the Standard, Premium, and Professional tiers, and it is metered by volume rather than by seat.
Teams needing to exceed Gmail's limits while staying inside the GMass workflow use this path. The catch: ColdSMTP forfeits the Gmail-native deliverability advantage that is GMass's whole original selling point. Once you route through shared SMTP, the receiving server sees relay traffic instead of gmail.com traffic, and inbox placement behaves differently as a result.
In practice, ColdSMTP is a good stretch mechanism for occasional volume spikes, not something to build a high-volume architecture around. Teams consistently needing 5K+ sends a day are better served evaluating dedicated cold email platforms instead of pushing GMass past its natural fit.
Key takeaways
- ColdSMTP routes around Gmail's caps using shared SMTP
- Priced by volume, entirely separate from the seat-based tiers
- Trades away the Gmail-native deliverability advantage
- Best for occasional spikes, not as a long-term architecture
When the Professional team plan is actually worth the premium
At $55/user/mo, GMass Professional is the priciest way to use the product per person. That premium only pays off when the team-oriented features, shared templates, team analytics, dedicated onboarding, priority support, actually create operational value. For a 2-person team where each person runs independent workflows, two separate Standard licenses at $25 each ($50/mo total) can beat Professional ($110/mo for the same two seats) without giving up much real functionality.
For a 5-person team running genuinely coordinated outbound with shared templates and shared analytics, Professional at $275/mo earns its keep because that coordination has real value. A simple test: if shared templates and analytics function as core infrastructure for your team, go Professional. If your team is really just independent operators sharing a logo, multiple Standard licenses will save money.
Key takeaways
- Professional is the priciest per-seat tier GMass offers
- A 2-person independent team usually does better on two Standard licenses
- Coordinated teams of 5+ tend to justify Professional
- Whether the team features earn their keep is the whole question
Keep reading
Got questions? We've got answers.
Still stuck? Talk to us →Standard costs $25/mo and Premium $35/mo, each covering a single Gmail account, while Professional runs $55/user/mo for the team plan with shared features. All three offer annual discounts.
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