A valid email address has four parts: Recipient name . @ symbol . Domain name . … Domain names may be a maximum of 253 characters and consist of: Uppercase and lowercase letters in English

What is an invalid email address? Basically, it’s just an address that doesn’t have the correct format to be an email address, one that doesn’t exist or doesn’t anymore. Ainsi Which format of email address

Modifying the contact information could resolve the issue. Select the Google Apps menu in the upper-right corner and choose Contacts. … Hover over the contact you want to edit and select the Pencil icon on