Top Deliverability’s Blog
WttW: “Friendly From” addresses
- May 1, 2023
- Posted by: Top Deliverability
- Category: Industry News Word to the Wise
Word to the Wise just issued a insightful write-up:
When we’re looking at the technical details of email addresses there are two quite different contexts we talk about. One is an “821 address” or “5321 address”. This is the email address as it’s used by the SMTP protocol, as part of the “MAIL FROM: ” or “RCPT TO: ” commands sent to the mailserver. It’s defined in RFC 821, now updated by RFC 5321, hence the name. If someone mentions the “envelope” or they’re talking about “bounce addresses”, this is the sort they mean. We’re not talking about them in this post. The other is an “822 address” or a “5322 address’. They’re the ones the recipient sees in the To: or From: headers. They’re named after their RFC, RFC 5322. This is the sort of email address most folks mean by default, unless they’re explicitly talking about the envelope of an email, but if someone describes an email
Read more from the original source: “Friendly From” addresses
Email Service Providers Handbook
The most comprehensive “Handbook of Email Service Providers“!
All SpamAssassin rules in one place, EXPLAINED!
& REPLY CODES
All SMTP/ESMTP commands and reply codes in one place, EXPLAINED!
Free DNS Tool
Check the DNS records of your domain with our free DNS tool.
The most comprehensive Email Deliverability and Marketing Glossary!