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RFC Documents
Request for Comments (RFC) documents are the instrument used to find and then define standards for Internet technologies and use, typically published by the Internet Engineering Task Force (IETF). Find information about the standards and documents here.
Can I Use a Period in an Email Address (And Where)?
Wondering what all the dots in Gmail addresses do? Trying to find out whether your clever “.first.last.name” idea is...
Can I Use Apostrophes in Email Addresses?
Seen an apostrophe in an email address and wondering if it was legitimate? Curious if you can include the character in...
Can an Email Address Contain or Start with a Number?
Frustrated when forms reject email addresses starting with numbers? You’re not alone wondering if digits are allowed...
Can I Use an Underscore ( _ ) in an Email Address?
Have you noticed underscore characters in email addresses? Wondering whether they are okay to use, and how you can add...
Can an Email Address Have a Space? (Whitespace Rules Explained)
Can an email address have a space in it? Whether you be sure before creating an email address or have seen an address...
Does Capitalization Matter in an Email Address?
Are you wondering if email addresses are case sensitive? Is Office@ladedu.com the same address as office@ladedu.com?...
Characters and Symbols (Not) Allowed in an Email Address
Wondering if that form that’s scolding you about forbidden characters in your email address is right? Curious which...