Comparison
Onmindo vs Mailtrack, written by the people who built Onmindo
This page is written by Onmindo, about Onmindo and Mailtrack, so weigh it accordingly. The parts where Mailtrack is stronger sit here as plainly as the parts where Onmindo is. If you want a tracker with eleven thousand ratings and a Featured badge behind it, coverage across Gmail and Outlook, and you do not mind the full-mailbox permission it asks of every user, stop reading and install Mailtrack. If you want to know which recipient of a group email opened it for free today, ahead of the $9 a month Onmindo will eventually charge for it, and you would rather hand over sending access before anything wider, keep going. If you are not sure these are the only two trackers that can name a group email's opener, start with which email tracker names who opened.
Mailtrack capabilities and pricing on this page were checked on 8 September 2026 against mailsuite.com. Tell us if something is out of date and we will fix it.
Onmindo vs Mailtrack, in one paragraph
Mailtrack is the most installed Gmail tracker there is: 3,000,000 users, 11.8K ratings at 4.4, a Featured badge, three priced tiers, and an Outlook add-in besides the Gmail one. Its free tier tracks every email you send and reports the first open, with Mailtrack's own signature attached until you pay to remove it. Naming which recipient of a group email opened sits on its top tier, Mailsuite, at $19.99 a month, or $9.99 a month billed annually. Onmindo does the same naming today, free, asks for nothing beyond send-and-address until that one feature is switched on, and has none of Mailtrack's numbers to show for it yet.
01
Their side
Where Mailtrack is better
Not a courtesy section. These are real reasons to choose them.
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Mailtrack is trusted at a scale Onmindo cannot show yet
3,000,000 people installed Mailtrack from the Chrome Web Store, 11.8K of them left a rating, the average is 4.4, and the listing carries a Featured badge. That is trust Onmindo has not earned yet: its own listing has none of it, no user count, no ratings, no badge.
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Its free tier tracks every email, with no cap
Mailtrack's free plan has no monthly limit: every email you send gets a pixel, and the first open is reported, at the cost of Mailtrack's own signature on your mail. Removing that signature needs a paid plan. Onmindo's published free tier is smaller by design, 200 tracked sends a month once it starts charging, and nothing is charged today.
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It already covers Outlook
Mailsuite ships a separate add-in for Outlook, listed on Microsoft AppSource, so a team split between Gmail and Outlook can run one tracker across both, per mailsuite.com. Onmindo only ever touches Gmail.
02
Our side
Where Onmindo wins
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Naming the opener costs nothing here today, and a monthly fee there
Onmindo's group feature is free today, and moves to Pro, at $9 a month or $84 a year, once charging begins. Switch it on and a message to five people leaves as one copy each, so the hover card names who opened, when, and in what. How Onmindo tracks several recipients. Mailtrack sells the same answer only on its top tier, Mailsuite, at $19.99 a month, or $9.99 a month billed annually; the Free tier and the $6.99 Mailtrack tier do not get it at all.
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Onmindo asks for the least permission each job needs
Connecting Gmail asks for send and your address, a token that cannot read mail. That is the default for every user, on every tier.
- Read access is asked for per feature. Telling a reply from an out of office needs the thread, so Onmindo asks then. Decline it and the rest still works.
- Naming which recipient opened needs the full Gmail permission, because Gmail's submission server accepts no narrower one. It stays off until you switch it on.
- Mailtrack asks every user for the full mailbox up front, free tier included: "Read, compose, send, and permanently delete all your email from Gmail", per the Google Workspace Marketplace consent text.
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The line under your signature costs nothing to turn off
Onmindo adds one line, "Sent with Onmindo", under a tracked message, on by default. Turning it off is a toggle in Settings, at no cost. Mailtrack's free tier adds its own signature to every tracked email, and removing it needs a paid plan.
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A delivery is not an open, and Onmindo says so
Gmail fetches your pixel twice: once at delivery, before anyone has read the message, and once more for each person who opens it. Onmindo recognises the delivery fetch and records it as delivered, not opened, and publishes how. Mailtrack claims "false open avoidance" for a sender's own opens, and publishes nothing about the delivery-time fetch.
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Every open names the client that made it
Onmindo records the client behind each open: Gmail, Apple Mail, Outlook. For a Gmail reader there is no device and no city, because Google's proxy did the fetching. Mailtrack does not publish what an open screen shows, so it is left blank below rather than guessed.
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A booking page comes with it
Open times, read from the sender's own Google Calendar and nothing else, get inserted straight into the message body. Mailtrack does not publish a scheduling feature, so it is left out of the matrix rather than assumed absent.
03
Side by side
Onmindo and Mailtrack, feature by feature
Every Onmindo cell is traceable to the repository. Every Mailtrack cell is taken from mailsuite.com, the Google Workspace Marketplace consent text, or the Chrome Web Store listing, on the checked date above, and anything the vendor does not state is left as "not stated" rather than guessed. A blank is honest; a wrong tick is not.
| Capability | Onmindo | Mailtrack |
|---|---|---|
| Chrome Web Store standing | New listing: no user count shown, no ratings, no Featured badge | 3,000,000 users, 11.8K ratings at 4.4, Featured badge |
| Open tracking | Yes, live. Delivery prefetch shown as delivered, not opened | Yes. Unlimited tracked sends on Free; only the first open is reported there |
| Click tracking | Yes, off by default, gated on tracking domain age | Not stated |
| Which recipient opened | Named: a copy each under the To line you typed, in one thread. Needs the full Gmail permission, asked for when you switch it on. | Named, on the Mailsuite tier only: $19.99 a month, or $9.99 a month billed annually. Absent from Free and from the $6.99 Mailtrack tier |
| Device or location on opens | The client always (Gmail, Apple Mail, Outlook). Device and country only when the reader's own client fetched, never for a Gmail reader | Not stated |
| Gmail's delivery-time fetch counted as an open | No, recorded as delivered, mechanism published | Not published. Claims "false open avoidance" for the sender's own opens |
| Templates with variables | Yes | Not stated |
| Scheduled send | Yes, server-side, browser can be closed | Not stated |
| AI-written follow-ups | Yes, Claude drafts in your voice into Gmail drafts | Not stated |
| Reply classification that ignores auto-responders | Yes | Not stated |
| Pre-send deliverability check | Yes, static rules plus a Claude pass | Not stated |
| Warm-up caps and jittered pacing | Yes | Not stated |
| Suppression list, auto-fed by bounces | Yes | Not stated |
| Reporting surface | A web dashboard that keeps working with the extension uninstalled | Not stated |
| Multi-step sequences | Yes. Stops on a genuine reply, not on an autoresponder | Not stated |
| Mail merge from CSV | No | Not stated |
| CRM sync | No, and not planned | Not stated |
| Team analytics, shared templates, round robin | No, and not planned | Not stated |
| Booking page / meeting scheduling links | Yes, on the sender's own Google Calendar, open times inserted into the message body, busy intervals only | Not stated |
| SSO / SCIM | No, and not planned | Not stated |
| Gmail permission asked for up front | Send, and your address. Read access only per feature, on request | "Read, compose, send, and permanently delete all your email from Gmail", asked of every user, Free tier included |
| Message bodies stored | No, except a scheduled send until it goes out | Not stated |
| Free tier adds a signature | A "Sent with Onmindo" line is on by default, free to turn off in Settings | Yes. Removing it needs a paid plan |
| Works with Outlook too | No, Gmail only | Yes, a separate add-in listed on Microsoft AppSource |
| Price | Free today, nothing chargeable. Published for later: Free at 200 tracked sends a month, Pro at $9 a month or $84 a year, per account | Free at $0. Mailtrack tier $6.99 a month per user. Mailsuite tier, which names who opened a group email, $19.99 a month per user, or $9.99 a month billed annually |
04
The decision
Who should pick Onmindo, and who should pick Mailtrack
Pick Mailtrack if
You want a tracker with eleven thousand ratings and a Featured badge behind it, you need coverage across Gmail and Outlook, you do not mind the full-mailbox permission asked of every user, or you send high volumes and are fine with only the first open being counted on the free tier.
Pick Onmindo if
You want to know which recipient of a group email opened it for free today rather than on Mailtrack's $19.99-a-month tier, you want the tool to hold the least Gmail permission it can until you switch on the one feature that needs more, you want the delivery fetch told apart from a real open, or you want a booking page bundled in rather than bought as a separate product.
Pick neither if
You want certainty about who read your email. Nobody can sell you that, and the ones who imply it are the ones to be careful with.
Closing
Try it against your own inbox
Signup is free and takes a minute. Send yourself five messages, one of them to two addresses with a copy each, and hover the row. That is the whole pitch, and it costs you ten minutes to check whether we are right.