Hyphen or dash in email address

In an email address, you can use either a hyphen (-) or an underscore (_) to separate words. Both are allowed and are considered valid characters in an email address.

For example:

• [email protected] (using a hyphen)
• [email protected] (using an underscore)

However, it's worth noting that some email providers or systems may have specific rules or limitations when it comes to using hyphens or underscores in email addresses. For example:

• Some providers may not allow hyphens at the beginning or end of an email address.
• Some systems may have issues with email addresses that contain multiple consecutive hyphens or underscores.

In general, it's a good idea to stick to the standard convention of using letters, numbers, and periods in an email address, and to avoid using special characters like hyphens or underscores unless absolutely necessary.

It's also worth noting that while both hyphens and underscores are allowed in email addresses, underscores are more commonly used in domain names and URLs, while hyphens are more commonly used in email addresses.