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Allowed characters for file and folder naming

Updated at December 11th, 2024

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Email subjects, Files and Folder names and Attachment Names may include many types of characters, however there is a limit in size and which characters are allowed:

  • Size Limit: All folders and names are set to a Max of 200 characters
  • Character Limitation: The following characters are also removed:
/  \  *  ?  |  <  >  #  %  ' : "
  • All words finishing with the following characters are not allowed
~ .
  • "non-printables" and "control" characters are removed
 
 
List of all allowed characters:
 
  •  \p{L} or \p{Letter}: any kind of letter from any language.
  •  \p{N} or \p{Number}: any kind of numeric character in any script.
  •  \p{M} or \p{Mark}: a character intended to be combined with another character (e.g. accents, umlauts, enclosing boxes, etc.).
  •  \p{Sm} or \p{Math_Symbol}: any mathematical symbol.
  •  \p{Sc} or \p{Currency_Symbol}: any currency sign.
  •  \p{Sk} or \p{Modifier_Symbol}: a combining character (mark) as a full character on its own.
  •  \p{P} or \p{Punctuation}: any kind of punctuation character.
  •  \p{Z} or \p{Separator}: any kind of whitespace or invisible separator.


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