Free to score. Pay for the deep-dive.
Forwarding an email and reading the score is free and unlimited. Pay only for the AI deep-dive — €4.99 credit packs or €9.99/mo. Cancel from the same screen you upgrade on.
A score, a placement read, and the fix.

- A plain-English score
- Where it actually lands
- The three things to fix
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.
What you get on each tier.
| Feature | Free | Credits | Monthly |
|---|---|---|---|
| Gmail · Outlook · Yahoo verdict | |||
| Plain-English verdict + fixes | |||
| AI deep-dives included | 1 free | about 5 per €4.99 pack | about 10 / mo |
| Support | Email · 24h reply |
- Gmail · Outlook · Yahoo verdict
- Plain-English verdict + fixes
- AI deep-dives included
- 1 free
- Support
- Gmail · Outlook · Yahoo verdict
- Plain-English verdict + fixes
- AI deep-dives included
- about 5 per €4.99 pack
- Support
- Gmail · Outlook · Yahoo verdict
- Plain-English verdict + fixes
- AI deep-dives included
- about 10 / mo
- Support
- Email · 24h reply
- Made in the EU
Built and hosted in Bratislava.
- GDPR by default
Your emails are deleted automatically.
- 30-day money-back
Change your mind, get a full refund.
The questions we get most.
Do you store the email I forward?
The test mailbox auto-deletes after the report finishes. We never store the raw email body beyond what the report references — subject line, header metadata, and the classification result. EU-hosted in Bratislava, GDPR by default. See the privacy page for the full details.
How is this different from GlockApps / MailReach?
Those tools focus on inbox-placement warm-ups (the deliverability-obsessive workflow) and bill per seed list per month. We do one thing — you forward one email, we tell you in plain English where it'll land and what to fix. Pay-as-you-go credits or a light €9.99/mo plan instead of a heavy seat-based subscription, EU-hosted instead of US, and a voice that sounds like the platform you already use (Beehiiv, Kit, Substack) instead of a deliverability vendor.
When does billing start?
Only when you buy credits or start the €9.99/mo plan. Forwarding an email and reading the score is genuinely free — no card collected, no trial countdown, no automatic upgrade. The only thing you ever pay for is the AI deep-dive.
How do I cancel?
Same screen you upgrade on, one click. We don't make you email us, talk to a chatbot, or wait for end-of-cycle. Your remaining month stays active; we don't re-bill.
What do I actually pay for?
Forwarding an email and getting the score + verdict is free and unlimited — across Gmail, Outlook and Yahoo, all in one report. The paid unit is the AI deep-dive: the full AI breakdown with rewrites, which costs 100 credits (one unlock). Your free grant of 100 credits covers your first deep-dive; after that, a €4.99 pack is about 5 more, or €9.99/mo is about 10 a month.
What's the refund policy?
30-day money-back, no questions asked. If your first paid month doesn't help you ship a better send, email hello@mailtester.ai and we refund the charge.
Still on the fence? Email hello@mailtester.ai — a real person replies.
Send your next one to the inbox.
Takes less time than picking a hero photo. No card, no signup, no anything.
