How to read e-mail headers: where did a message really come from?
Which header lines matter, how to trace the route of a message and how to spot a forged sender.
4 min read
Guides
How e-mail works behind the scenes, explained without jargon – with tools to try it out yourself.
SPF, DKIM and DMARC explained
What the three DNS records do, why Gmail and Yahoo require them and how to check whether your mail passes.
5 min read
What is a disposable e-mail address?
What a disposable address is good for, when you should use your real address instead and what to look for in a service.
5 min read
How to spot a phishing e-mail: the key warning signs
How to recognise fake messages from your bank, a parcel service or your boss, how to check links safely and what to do if you have already clicked.
5 min read
Why do newsletters land in spam? Causes and fixes
The most common reasons newsletters and app e-mails end up in the spam folder, and a checklist to get them back into the inbox.
5 min read
How to protect your e-mail address from spam
How spammers get hold of addresses and which simple habits keep your main inbox clean for good.
4 min read
How to test e-mails in automated tests
How to check sign-up, password reset and confirmation codes in end-to-end tests with real inboxes, without flaky tests.
5 min read