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

Blind copied emails

  • 3 cavab
  • 2 have this problem
  • 8 views
  • Last reply by Matt

more options

Thunderbird will not send any emails with blind copied addresses in the "to" line.

Thunderbird will not send any emails with blind copied addresses in the "to" line.

Chosen solution

yahoo of late appears to be insisting that BCC: mail must have a valid to: address as well. Are they your provider?

Read this answer in context 👍 0

All Replies (3)

more options

Seçilmiş Həll

yahoo of late appears to be insisting that BCC: mail must have a valid to: address as well. Are they your provider?

more options

Yes, ATT mail uses Yahoo, so I sent myself a blind copy at an alternate address, and it worked. This must be a recent move by Yahoo, as I had not had a problem before. Yahoo needs to let folks know about this.

more options

backer0 said

Yahoo needs to let folks know about this.

They do, But Yahoo are not loosing customers in the US at rates high enough to alarm them. So I guess their current lackluster communications and arbitrary decision making is acceptable to the US market.

I can not find any reference to it anywhere on their site to a change, just customers with something that does not work trying different things. Perpetuating the myth that email is some sort of lottery and settings are guess work. With a good mail provider nothing is guesswork because they document their policies and settings.