This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

I cannot send an email, error message reads address rejected, needs fully qualified address. Now no email can be sent.

more options

I cannot send any emails. Error box reads: Recipient address rejected: need fully-qualified address. Please check the message recipient

I cannot send any emails. Error box reads: Recipient address rejected: need fully-qualified address. Please check the message recipient

All Replies (1)

more options

How your adding the email address? Typing manually or choosing from address book


In order to better assist you with your issue please provide us with a screenshot. If you need help to create a screenshot, please see How do I create a screenshot of my problem?

Once you've done this, attach the saved screenshot file to your forum post by clicking the Browse... button below the Post your reply box. This will help us to visualize the problem.

Thank you!