Preview any email.
Share it in one link.
Paste your email HTML, see it across desktop, mobile, light and dark mode — then send one link to your client or team for sign-off.
How it works
Paste your HTML
Drop any email HTML — from HubSpot, Beehiiv, Mailchimp, or hand-coded. No setup needed.
Preview every device
See your email across desktop, mobile, light and dark mode — side by side, in seconds.
Share one link
Send a single link to your client, team, or reviewer for sign-off — no login required.
Preview across
Frequently asked
What is MailProof?
MailProof is a tool for previewing email HTML and sharing it as a single link for client or team sign-off. You paste your email, see it across desktop, mobile, light and dark mode, and send one proof link for approval.
Does MailProof test how my email renders in real email clients?
No. MailProof generates visual simulations of how an email may appear — it is not a screenshot of a real Gmail, Outlook, or Apple Mail inbox. It is built for previewing and sharing designs for sign-off, not for rendering-accuracy testing.
Do I need an account or credit card to try it?
You can start free with 3 email proofs and no credit card. Just sign up with Google or an email and password.
How does sharing work?
Every preview you create gets a shareable link. Anyone with the link can view the proof — no login required — making it easy to get sign-off from clients or teammates.
What does the Pro plan add?
Pro ($9.99/month) gives you unlimited proofs and removes MailProof branding so your shared proof pages are white-labeled and client-ready.
Ready to send your next email?
Skip the screenshots. Share a clean proof and get sign-off.
Start for free →3 free proofs · no credit card