You can use the asterisk (*) as a wildcard in email addresses
when defining routes and in file names.
Wildcards can appear in the name or domain sections of an email
address. The following are valid examples:
-
*@*: Valid representation of all email addresses.
-
*@domain.tld, name@*.tld: Valid representation
of the whole name or the domain (not the top level domain (TLD)).
-
*@*.tld: Valid representation of both the name
and the domain (not the TLD).
Wildcards cannot appear in a subdomain or the top-level domain.
Wildcards also cannot appear with other letters; they must appear
alone. The following are invalid examples:
-
name@domain.*.tld: Invalid representation
of a subdomain.
-
name@domain.*: Invalid representation of a TLD.
-
*name@domain.tld: Invalid use in conjunction
with a name.
