validates_email_format_of

Email addresses are validated against the RFC 2822 and RFC 3696 international standards.

The file allows developers to set custom error messages, to allow/disallow nil values, check DNS records for a valid MX domain and more.

What is new in this release:

• Don't allow domains with underscores.
• Removed extra spaces in validation messages.
• Updated tests for Rails 2.3+.

What is new in version 1.6.2:

• Don't allow domains with underscores.
• Removed extra spaces in validation messages.
• Updated tests for Rails 2.3+.

Requirements:

• Ruby on Rails