A valid email address consists of an email prefix and an email domain, both in acceptable formats.
The prefix appears to the left of the @ symbol.
The domain appears to the right of the @ symbol.
For example, in the address example@mail.com, "example" is the email prefix, and "mail.com" is the email domain.
Acceptable email prefix formats
- Allowed characters: letters (a-z), numbers, underscores, periods, and dashes.
- An underscore, period, or dash must be followed by one or more letter or number.
| Invalid email prefixes: | Valid email prefixes: |
|---|---|
| abc-@mail.com | abc-d@mail.com |
| abc..def@mail.com | abc.def@mail.com |
| .abc@mail.com | abc@mail.com |
| abc#def@mail.com | abc_def@mail.com |
Acceptable email domain formats
- Allowed characters: letters, numbers, dashes.
- The last portion of the domain must be at least two characters, for example: .com, .org, .cc
| Invalid email domains: | Valid email domains: |
|---|---|
| abc.def@mail.c | abc.def@mail.cc |
| abc.def@mail#archive.com | abc.def@mail-archive.com |
| abc.def@mail | abc.def@mail.org |
| abc.def@mail..com | abc.def@mail.com |
