Stop sending to
addresses that
were never going
to open.
trck checks every address on your list before you hit send — flagging invalid, risky, and disposable emails so your campaigns land in inboxes instead of bouncing off servers.
- 12+ checks on every single address
- Bulk uploads and a real-time API, both included
- First 200 verifications free, no card required
Trusted at scale. Proven results.
Built for marketing teams, growth teams, and platforms that send at scale and can't afford a damaged sender reputation.
We built the checkpoint your list goes through before your ESP does.
trck started with a simple frustration: teams were paying to send campaigns to lists full of dead addresses, typos, and spam traps, then watching their sender reputation take the hit. Email providers don't tell you which addresses are the problem — they just quietly stop delivering to the good ones too.
So we built a verification layer that sits between your list and your send button. Every address is checked against live mail servers, syntax rules, domain records, and a constantly updated database of disposable and trap addresses — in bulk for existing lists, and in real time as new signups come in.
Four ways to keep a clean list
Pick the layer of protection that matches how addresses enter your system — or run all four together.
From messy list to send-ready in three steps
Upload or connect
Drop in a CSV, paste addresses directly, or connect trck to your ESP or signup form with a few lines of code.
We verify every address
Syntax, domain, mailbox, and reputation checks run automatically, sorting each address into valid, risky, or invalid.
Export or sync
Download a cleaned list, or let results sync straight back to your email platform so nothing needs a manual export.
What teams notice after switching
"Our bounce rate went from 8% to under 1% after the first clean. Klaviyo stopped flagging our sending domain within a month."
"We plugged the real-time API into our signup form in an afternoon. Fake and typo addresses just stopped showing up in our list."
"The monitoring alerts caught a batch of addresses going stale before our quarterly send. That alone paid for the year."
"Support caught a domain-wide typo pattern we didn't even know we had. Fixed it before our biggest send of the quarter."
Talk to us
Tell us the size of your list or your expected send volume, and we'll recommend the right plan.
Ready to verify your emails?
Keep your lists clean, improve deliverability, and reach real people.
