GMass vs Mailtrack
Someone searching GMass vs Mailtrack is usually deciding between two Gmail-only options at very different price tiers, often unsure whether they need mail-merge features at all.
GMass and Mailtrack are both Gmail-only Chrome extensions but solve different problems. GMass is a mail-merge platform for sending personalised emails from Google Sheets data, with sender warm-up, follow-up sequences, and basic tracking, priced from $25 to $145 per user per month yearly. Mailtrack is basic open and click tracking with reminders, priced from free (with footer) to $14.99 yearly Premium.
The deciding question is whether the team needs mail-merge at volume (GMass) or just open tracking (Mailtrack). They are not direct competitors on feature surface; the comparison usually surfaces when a Mailtrack user grows into needing mail merge.
Where GMass and Mailtrack differ
Both are Gmail-only Chrome extensions with no Outlook support. Both count raw pixel loads as opens with no confidence scoring exposed. Both run inside the user's own Gmail or Workspace account, preserving the sender domain's reputation.
Verdict by buyer profile
GMass's Sheets-driven mail merge and sender warm-up are exactly the right tools for this motion. Mailtrack does not have mail merge.
Mailtrack Pro at $4.99 yearly is the cheapest paid option in the category. No mail-merge overhead.
Outsolvi instruments the relationship motion with confidence-scored opens and AI reply sentiment. Many teams keep GMass for the prospecting layer and add Outsolvi for warm-thread tracking once a prospect engages.
Outsolvi is not a mail-merge tool. If your motion needs sending 500-2000 emails per rep per week from a Sheets-driven list, GMass is the right tool and Outsolvi cannot replace it. If your motion is relationship selling on warmer pipeline (or 30-100 sends per rep per week to named accounts), Outsolvi at $7-$20/user/mo yearly provides confidence-scored opens, AI reply sentiment, and native Outlook + Gmail. For teams in transition (moving from cold blast to relationship motion), keeping GMass for prospecting and adding Outsolvi for the warmer thread tracking is a common pattern.
Frequently asked questions
Do GMass and Mailtrack really compete?+
Not directly. GMass is a mail-merge platform; Mailtrack is a basic tracker. They surface in the same search results because both are Gmail-only and both touch sales email, but the use cases are different. A team usually picks one or the other based on whether mail merge is the load-bearing need.
Can I run mail merge with Mailtrack?+
No. Mailtrack tracks individual emails but does not have a mail-merge engine. For mail-merge workflows, GMass, Saleshandy, or another cold-outreach tool is the right fit.
Which has better deliverability?+
GMass has more deliverability tooling (sender warm-up, throttling, rotation) because cold-outreach volume requires it. Mailtrack does not affect deliverability — it just tracks what you send. Deliverability follows the sender domain's own reputation in both cases.
Are both Gmail-only?+
Yes. Both are Gmail Chrome extensions with no Outlook support and no public roadmap toward it. For mixed Outlook + Gmail teams, neither covers the Outlook side.
What is the price difference?+
GMass Standard at $25/user/mo yearly is 5x Mailtrack Pro at $4.99. The premium covers the mail-merge engine, sender warm-up, and campaign management. For teams that do not need those features, GMass is paying for stranded value.
Where does Outsolvi fit?+
Outsolvi is the tracking-intelligence layer for warmer-pipeline AE work, not a mail-merge engine. $7-$20/user/mo yearly with native Outlook + Gmail and confidence-scored opens. Many teams use GMass for cold-prospecting and Outsolvi for warm-thread tracking. Full breakdowns at [Outsolvi vs GMass](/compare/gmass) and [Outsolvi vs Mailtrack](/compare/mailtrack).
Want the third-option breakdown?
Outsolvi covers Outlook + Gmail natively, exposes Tier 1 to 5 confidence scoring on opens, and includes AI reply sentiment at the $7/user/mo yearly base tier. 14-day free trial, no credit card.
Start 14-Day Free TrialDeeper resources for each tool
Compare each tool against Outsolvi directly, see ranked alternatives, or read the migration guide.
Nate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi runs Tier 1 to 5 confidence scoring on every open, native in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.
We update these pages when the underlying mechanics change — new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.