Blog

Topic: Glossary

Every email and DNS term explained in plain language: SPF, DKIM, DMARC, IMAP, MX records, 2FA and more, with a concrete example for each term.

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What is webmail? Email straight in your browser, without installation and the same on every device. Read how it works, with an example.

What is TLS for email? The technique that encrypts your connection so no one can read along. Read how TLS (and SSL) protects your mail.

What is the SMTP protocol? The agreement that sends your outgoing email. Learn how SMTP works, with a concrete real-world example.

Mailbox vs email address: the address is the label, the mailbox is the letterbox behind it. Read the difference, with an example and aliases.

Reverse DNS meaning: the lookup from IP to name via a PTR record. Read how it helps your email reputation, with an example.

What is POP3? The protocol that downloads your email to a single device. Read the difference with IMAP and when POP3 is your best choice.

IMAP is the protocol that keeps your email on the server and in sync across all your devices. Read what it means and when to choose it.

What is greylisting? A spam trick that briefly parks unknown senders. Learn how it blocks spam and why mail sometimes arrives a little later.

What is DNS in email? The address book that determines where your mail goes, with records like MX, SPF and DKIM. Learn how it works.

What is CardDAV? The open standard that syncs your contacts across all your devices. Read how it works, with an example.

What is CalDAV? The open standard that syncs your calendar across all your devices, explained in plain language with an example.

What is autodiscover? The technique that lets your mail program fetch the right server settings by itself. Read how it sets up your account.