Both Mailtrack and Mixmax live inside Gmail and both tell you when someone opens your email — that's where the similarity ends. One is a lightweight read-receipt tool that grew into a small toolkit; the other is a full sales-engagement platform that happens to include tracking as one feature among several. Picking between them depends entirely on whether you want a notification or a workflow.
The short version: Mailtrack is the simplest option if all you want is to know the instant someone opens your email — a Gmail plugin with checkmark-style read receipts, now folded into the broader Mailsuite toolkit (mail merge, e-signatures). Mixmax is built for a different job entirely: an AI-powered sales-engagement layer inside Gmail, combining tracking with email sequences and embedded meeting scheduling, aimed at solo sellers and small sales teams.
Mailtrack — read receipts, kept simple
Mailtrack's whole pitch is speed and simplicity: install the plugin, and every email you send shows a checkmark the moment it's opened, the same visual language as a messaging app. It has a genuinely large user base — 3M+ total users, 116K paying subscribers — and works across Chrome, Gmail, Outlook, Android and iPhone. The catch is that exact pricing for paid tiers isn't published, so you can't comparison-shop before signing up, and it has no sequencing or multichannel outreach (LinkedIn, calls) if your needs grow beyond individual tracking. Best for: anyone who wants a read receipt and nothing more complicated than that.
Mixmax — tracking as one piece of a sales workflow
Mixmax starts from tracking but adds email sequences that automatically pause when a prospect replies, plus embedded meeting scheduling so there's no back-and-forth to book a call. Pricing is transparent and tiered: a real free plan (20 tracked emails + 50 sequence recipients/month, not just a trial), then $29-34/mo per “copilot” module (Inbox, Meeting, Engagement), or $89-105/mo for all three bundled. Enterprise customers like Canva, Brex and Datadog validate it at real scale. The downside is that the full feature set means stacking multiple subscriptions, it's Gmail-only with no native Outlook support, and unlike Apollo.io it has no built-in prospecting database. Best for: solo sellers or small teams who want sequencing and scheduling, not just a read receipt.
At a glance
| Mailtrack | Mixmax | |
|---|---|---|
| Core feature | Read receipts | Sequences + tracking + scheduling |
| Free tier | Basic open/click tracking | 20 tracked emails, 50 sequence recipients/mo |
| Paid pricing | Unpublished | $29-105/mo depending on modules |
| Platforms | Gmail, Outlook, Chrome, Android, iPhone | Gmail only |
| Best for | Simple individual tracking | Small sales teams running sequences |
Pick Mailtrack if you just want to know when an email got opened and nothing else — no sequences, no scheduling, no extra subscription to manage. Pick Mixmax if tracking is only step one and you actually need to run outreach sequences and book meetings without leaving Gmail. Neither replaces a full CRM or a prospecting database like Apollo.io — they're both built to make individual Gmail-based outreach less manual, just at different levels of ambition.