Free tool · public DNS · nothing stored
Will your mail land?
Type your domain and see its MX, SPF, DMARC and DKIM records in plain words, with the exact record to paste for each one that is broken.
- MX
- is where mail to you goes. Without it, mail bounces.
- SPF
- lists the servers allowed to send as you. One record, at most 10 lookups.
- DMARC
- tells receivers what to do when mail fails the other checks. Gmail and Yahoo have required it from bulk senders since February 2024.
- DKIM
- signs each message. It is read at the 20 selectors mail providers use most; yours may use another.
Now read the code
Mail records decide whether your invoices land. They say nothing about the app sending them: a key committed to the repo, a signup form a script can flood with mail you pay for, a route anyone can call. The ShipSaife scan reads the code and writes up each finding in plain English, with the exact fix.
Run a free scan
The grade and your worst finding are free. Every finding with its exact fix is $35, once.