Mailtrack
Replaceable in one session with an AI coding agent.
Tells you when an email you sent has been opened, through a tracking pixel and a browser extension that shows ticks in the inbox.
Build open tracking, and understand how unreliable it is. READ THIS FIRST - Image proxies pre-load the pixel, so an open can be recorded that nobody made - Blocked images mean a real read records nothing - Open tracking is a weak signal. Treat it as such, and never confront someone with it STACK - One endpoint, SQLite, a transparent 1x1 GIF THE PIXEL - A unique id per message, embedded as an image URL - Log timestamp, coarse device bucket and whether the user agent looks like a proxy - Never store the recipient's address in the URL; use an opaque id LINK CLICKS - Rewrite links through a redirect carrying the same id - Clicks are a far stronger signal than opens BEING DECENT - Say in your signature that you track opens. It costs you nothing and it is the honest thing Include the pixel endpoint, the proxy detection and the link rewriting.
What you lose
- A browser extension that puts the status inside Gmail, which is where the information is useful
- Link click tracking alongside opens
- Somebody keeping the extension working as the inbox changes
If you would rather not build
- A pixel and a redirect, which is what everyone does
- Your mail provider's own tracking
- Not tracking opens, which is a legitimate choice
The escape hatch
open source · no votes, no paid placement
Postal
$0A self-hosted mail platform that records delivery and engagement.
postalserver/postalfree · open source
Why this verdict
our own opinion · changed only by a person
86/100
Verdict yes at 86. A pixel and a redirect. The important part is being honest that open tracking is a weak, easily wrong signal.
History
tracked since 10 Aug 2026 · nothing is ever overwritten
Nothing recorded yet. This chart fills in once the page has visitors, votes or prompt copies — it will not draw a flat line to look busy.
Questions about Mailtrack
answered from the record above
Is Mailtrack free?
No — the plan we track is $4.99 a month. Pro at around $4.99/month billed monthly, cheaper annually.
Can you replace Mailtrack by building your own?
YES. Replaceable in one session with an AI coding agent. Replacement score 86 out of 100, build time one session. Read what you lose before you decide.
How much does Mailtrack cost?
$4.99 a month on Pro — $59.88 a year. Recorded 10 Aug 2026.
What do you lose by replacing Mailtrack?
A browser extension that puts the status inside Gmail, which is where the information is useful; Link click tracking alongside opens; Somebody keeping the extension working as the inbox changes. If any of those carry weight for you, keep paying.
Is there an open-source alternative to Mailtrack?
Yes: Listmonk, Postal. The prompt on this page is for when you want it your way instead.
Related entries
same category first, most replaced first
WiseStamp
Curated
MailtrapEvery week, something stops being worth paying for.
New verdicts, prices that moved, entries added. One email a week. Unsubscribe in one click.
free forever · no tracking pixel · every prompt stays free on the site