Knowledge base
1000 FAQs, 500 tutorials and explanatory videos. Here, there are only solutions!
Discover the allowed characters for an email address
This guide details the accepted and valid characters when you need to create an email address (up to 64 characters) within an Infomaniak Mail Service.
Preamble
- Some characters may be prohibited or allowed, but these are not the same characters depending on whether they are before or after the at sign @, as in nom-utilisateur.mail@nom-domaine.xyz for example.
- To understand the possibilities offered at the domain name level itself (distinct part "nom-domaine.xyz" that comes after the at sign @) , refer to this other guide.
nom-utilisateur.mail @ nom-domaine.xyz
In the part representing the user's email address (distinct part "nom-utilisateur.mail" that comes before the at sign @), providers like Infomaniak may limit the use of certain characters when creating email addresses, although they are allowed by the RFC (Request for Comments) #5321 and #5322 in particular.
Here is what can be used or not in the part preceding the at sign of an email address:
| forbidden characters | only allowed characters |
|---|---|
the dot (.) when used as the first or last character or consecutively ("anna.alpha" is allowed but "anna..alpha" is not) | |
the at sign (@) | the letters (from A à Z) |
the space ( ) | the digits (from 0 à 9) |
the exclamation mark (!) | the hyphen (-) |
the hash sign (#) | the underscore (_) |
the dollar sign ($) (refer to this other guide regarding the presence of this character in your passwords) | |
the percent sign (%) | |
the caret (^) | |
the ampersand (&) | |
the asterisk (*) | |
the opening parenthesis (( ) | |
the closing parenthesis ( )) | |
the equal sign (=) | |
the opening bracket ([) | |
the closing bracket (]) | |
the opening angle bracket (<) | |
the closing angle bracket (>) | |
the comma (,) | |
quotation marks (") | |
the slash (/) | |
the semicolon (;) | |
the question mark (?) | |
| all non-ASCII characters | |
| all non-printable characters such as those in the ASCII character set below 32 (e.g., control characters) | |
Link to this FAQ: