Help Centre: Invalid email address

It is possible to see a message Invalid email address when registering.

There are a few possible explanations:

You might have typed or a space after the email address or you may have copy-pasted the address and it has a space at the end. To fix this, put the cursor after the end of the first email address and click backspace.

The email address you entered might have a comma instead of a dot somewhere.

There might be a top-level domain missing. To be valid, there must be at least one dot somewhere after the @.

The email address validation rules are:

1. Must not contain a space.
2. Must contain @
3. Must contain alphanumeric characters, or underscores and hyphens only.
4. Must not contain other special characters or apostrophe.
5. Must contain at least one valid character before the @ and at least one character after the @ followed by a dot and then at least two characters after the dot.