Will Gmail trust your sender? (Yes if SPF passes.)
SPF tells inboxes which servers are allowed to send for your domain. Forward an email — verdict in 30 seconds.
Free SPF Record Checker & Validator
- What is an SPF record?
- SPF (Sender Policy Framework) is a line in your domain's DNS that lists which servers are allowed to send email as you. Mailboxes check it to decide whether a message is really from you — or a spoof.
- Why does SPF affect whether my newsletter lands?
- If SPF fails or is missing, Gmail and Outlook trust your sender less and more of your campaign slips into spam. Passing SPF is one of the basics that keeps you in the inbox.
- How do I check and fix my SPF record?
- Forward a real email to your Mailtester address — we read the SPF result straight from the message and tell you in plain English whether it passed, plus the exact record to add if it didn't.
€9.99 for AI deep-dives.
You forward it.
Paste the mailbox above into the test-send field in Beehiiv, Kit, Substack, Mailchimp — or your own inbox. Hit go. We never see your subscriber list.
We actually open it.
In real Gmail, real Outlook, real Yahoo. We watch where your email lands — Primary, Promotions, or Spam — using the same filters that decide whether your campaign worked.
You get a report.
Plain English. Three things to change, in priority order. Unlock the bundle and we generate a subject, body, and CTA rewrite in your voice — paste them back into your campaign before lunch.
Two different tests.
Most people mix them up.
If you've ever searched "email tester," half the results check whether the address is valid. We do the other thing — whether the email itself will reach the inbox once you press send.
You upload a CSV of subscribers. The tool tells you which addresses bounce. Great for cleaning a stale list before a re-engagement send.
You forward one email — newsletter, launch, client note — to a one-time mailbox. We open it in real Gmail, Outlook, and Yahoo and tell you which tab it landed in, plus what to rewrite before you send it to your list.
We check whether your sends will land. That's the whole product.
Free to score. Pay only for the AI deep-dive.
Forward any email and get the score — free and unlimited. Buy credits when you want the occasional AI deep-dive, or go €9.99/mo if you send regularly. Cancel from the same screen you upgrade on.
Send your next one to the inbox.
Takes less time than picking a hero photo. No card, no signup, no anything.