Template:Search - About Special Characters
Words inside indexed emails or attachments which are a combination of alphanumeric (letters, digits) and non-alphanumeric characters (white space, line break, delimiter or other control characters), may be returned in search results when searching for the alphanumerical part only.
For instance, when searching for firstname, firstname.lastname and lastname, e-mails containing the word firstname.lastname will be returned.
Commonly occurring characters are:
- Period (.)
- Comma (,)
- Colon (;)
- Hyphen (-)
- Underscore (_)
- AT-Sign (@)
- Slash & Backslash (/,\)
- Null character (NUL)