Free tools
Free tools for business email
Quick, honest checks you can run on any domain. No sign-up, nothing stored.
Most used
Email security checker
Check any domain’s SPF, DKIM, DMARC and mail servers in seconds.
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Free tool
MX lookup
Look up any domain’s MX records: which servers receive its email, in what order, which provider runs them and whether each one resolves. Free, nothing stored.
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Free tool
MTA-STS checker
Check a domain’s MTA-STS record and policy file: the mode, max_age, whether the mx: lines match its mail servers, and TLS-RPT reporting. Free, nothing stored.
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Free tool
BIMI checker
Check whether your logo can appear next to your email: the BIMI record, the DMARC policy it needs, your SVG Tiny PS logo and your mark certificate. Free.
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Free tool
SPF record checker
Check any domain’s SPF record: syntax, the “all” mechanism and the 10-lookup limit, counted through every include. Plain-English results. Free, nothing stored.
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Free tool
DMARC checker
Look up any domain’s DMARC record: what its policy really does, whether reports are being sent and what to change next. Free, no sign-up, nothing stored.
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Free tool
DKIM checker
Find and check a domain’s DKIM keys. Enter your own selector, or let us try the ones Microsoft 365, Google and common senders use. Free, nothing stored.
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Free tool
SPF record generator
Build a correct SPF record for Microsoft 365, Google Workspace and common mail services, with warnings about the 10-lookup limit. Free, runs in your browser.
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Free tool
DMARC record generator
Create a DMARC record for your domain with plain-English advice on each setting — from p=none monitoring to p=reject. Free, runs entirely in your browser.
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Free tool
Email header analyser
Paste an email’s headers to check SPF, DKIM and DMARC results, spot reply-to and display-name tricks, and trace its route. Free, private, runs in your browser.
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Free tool
DMARC report analyser
Open DMARC aggregate reports (.xml, .zip or .gz) and see who sends email as your domain, what passes and what fails. Free, private: runs in your browser.
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Calculator
Hosted Exchange cost calculator
Work out what your organisation would pay each month or year, with or without VAT and add-ons.
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Ready to move your email to a UK Exchange platform?
Tell us how many mailboxes you have and who hosts them today. We will send a written quote, a migration plan and a fixed cutover date — usually within one working day.
- Free assisted migration
- No set-up fee, no minimum term
- UK data centres, UK engineers