Characters allowed in email addresses
Learn which characters are allowed in email addresses, covering both the local (addressee) and domain parts, how email syntax is structured, and what the relevant technical standards say.
Collection of publications tagged with email.
Learn which characters are allowed in email addresses, covering both the local (addressee) and domain parts, how email syntax is structured, and what the relevant technical standards say.
How to add a custom domain to mailbox.org for sending and receiving emails. Incl. SPF, DMARC and DKIM to an existing mailbox.org email account. Simple step-by-step instruction.
Learn how to add subject, CC, BCC, and body fields to an email mailto link, format additional parameters, and encode special characters properly according to RFC 3986.
Learn what email headers are, how to view raw headers, and understand key fields like DomainKeys Identified Mail (DKIM) and Sender Policy Framework (SPF) for email security.
Learn how DomainKeys Identified Mail (DKIM) enhances email security by allowing senders to sign messages cryptographically, ensuring email integrity and authenticity.
Domain-based Message Authentication, Reporting & Conformance (DMARC) enhances email security and helps domain owners control how unauthenticated messages are handled.
Learn how Sender Policy Framework (SPF) works, its mechanisms, and how to configure it for secure email authentication to help prevent email spoofing, spam, and phishing attacks.
“Did we imagine that people would do bad things on the web? Absolutely.”