Category
Email Deliverability
Key features
Email spam score out of 10
Content and server analysis
SPF, DKIM and DMARC checks
01 — Overview
What is
Mail-Tester
Mail-Tester checks how likely an email is to land in spam. You send a message to a unique test address, and it analyzes the content, the sending server, the IP and its authentication (SPF, DKIM, DMARC), then returns a score out of 10 with a detailed report of what to fix. The site also offers checkers and generators for SPF, DKIM, DMARC and BIMI, plus domain, DNS, IP reputation and phishing link tools.
02 — Who it’s for
Ideal Customer Profile
Used by marketers sending newsletters, sales teams and agencies running cold email, and developers checking server setup. It fits teams of any size that want a quick deliverability check before a send.
03 — Capabilities
Key Features
Email spam score out of 10
Content and server analysis
SPF, DKIM and DMARC checks
BIMI checker
IP reputation and DNS lookup
JSON API and iframe embed
05 — Similar tools
Alternatives
06 — FAQ
Frequently Asked Questions
What is Mail-Tester used for?
It tests a real email you send to a generated address and gives a spam score with a report on content, sending server and authentication problems.
How does Mail-Tester work?
You send your email to the random address shown on the site, click to check your score, and it analyzes the message, server and IP using tools such as SpamAssassin.
Who makes Mail-Tester?
According to its terms of service, Mail-Tester is run by Mail Tester LLC, based in Dover, Delaware, USA.
Does Mail-Tester have an API?
Yes. It offers a JSON API and an iframe so you can include test results in your own software.