Bounces
Past 5% of addresses that do not exist, mailbox providers start filing you as spam. That is their published rule. We tell you the day you cross it.
Your email was sent. Nobody read it.
Resend, Postmark and SES tell you “delivered” — and they are right: the message arrived. In the spam folder. The open rate collapses on a Tuesday and you find out three weeks later on a chart. Here we read what your provider is telling you, and we warn you the next morning.
Complaints
“Report as spam”: 0.1% is enough. Three complaints in a day is worth an alert whatever the volume — nobody complains about a message they were expecting.
Opens, compared to the right day
A Monday looks nothing like a Saturday. We compare today’s open rate to the same weekdays over previous weeks — the Stats collapse detection, applied to email. If it halves: spam folder.
What it costs to set up
One webhook address to paste into Resend, Postmark or SES. Nothing in your code, nothing in your DNS. The first event arrives within seconds.
What we never keep
No recipient, no subject, no content. The sending domain, the kind of event, the moment, and an identifier so nothing is counted twice. Nothing that describes your customers.
And sending, with no middleman
A domain proven by DNS, two records to add — DKIM and SPF — and POST /api/v1/mails. Tock signs and delivers to the recipients’ servers itself; delivered, bounced and opened come back in the same table. No account with a third party.