See your spam score before you hit send.
Forward a draft to our mailbox. In 30 seconds you'll know which inboxes mark it spam and the three things to fix first.
Free Email Spam Score Tester
- What is a spam score?
- It's a rating of how 'spammy' your email looks to filters like SpamAssassin — based on your subject line, content, links, and formatting. The lower the score, the better your chances of landing.
- Why is my newsletter going to spam?
- Usually a mix of small things: a trigger word in the subject, too many images, a risky link, or weak authentication. We pinpoint the specific reasons and rank them by impact.
- How do I test my spam score before sending?
- Forward your draft to your Mailtester address. We run it through real spam filters and give you a score plus the three things most worth fixing — in plain English, with rewrites.
€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.