That email you’re about to send?
Let’s sleep on it.
Mailbrake holds your outgoing emails and flags the ones you’ll regret — angry replies, 1am rants, reply-all disasters, leaked info.
“Best 7 cents I ever spent.”
— Anonymous Mailbrake user
How it works
Four simple steps between you and email regret.
Hit Send
Send your email like normal. Mailbrake works silently in the background.
Mailbrake holds it
Your email enters a cooling-off window. Undo anytime during the delay.
AI checks tone & data
Our AI analyzes anger, PII risk, passive-aggression, and career damage.
Regret detected? One tap.
Get a rewrite suggestion or cancel the send entirely. One tap.
Simple, transparent pricing
Start free. Pay only when our AI actually saves you from email regret.
Built to be trusted with your most private messages
Your email is personal. Mailbrake is engineered so that we see as little as possible — and keep none of it.
Your emails are never stored
We do not save, log, or keep a copy of your email content — ever. Text is analyzed the instant you send and discarded immediately. There is no inbox archive to leak or subpoena.
Most emails never leave your browser
A local pre-filter runs entirely on your device first. Only emails that look genuinely risky are sent for AI review — calm, routine emails are handled without ever contacting our servers.
Encrypted end to end in transit
Every connection uses TLS encryption — the same standard your bank uses. Nothing travels over the network in plain text.
We never see your password
Mailbrake signs you in with Google’s official, secure login. We never ask for, see, or store your Gmail password, and we cannot read your inbox.
Minimal permissions
The extension only asks for what it needs to work on Gmail — nothing more. It cannot access other sites, browsing history, or files on your computer.
Never sold, never shared
We do not sell, trade, or share your data with advertisers or anyone else. Payments run through Stripe, so we never store your card number.
Privacy-first architecture
We never store your emails. Your text is analyzed in real-time and immediately discarded.