Windows 10: Thunderbird Email Problem

Discus and support Thunderbird Email Problem in Browsers and Email to solve the problem; Every time I send email with Thunderbird I put multiple recipients in the Bcc: section and no one in the To: section and that is what is shown.... Discussion in 'Browsers and Email' started by evhid1, Aug 16, 2016.

  1. evhid1 Win User

    Thunderbird Email Problem

    Every time I send email with Thunderbird I put multiple recipients in the Bcc: section and no one in the To: section and that is what is shown. However, when the people I'm sending it to get the email everyone is in the To: line and they can see everyone else's email address. Is there a fix for this, or did I set something wrong in Thunderbird?

    evhid1, Aug 16, 2016
  2. Roald_463 Win User

    Windows 10 compatibility with Firefox and Thunderbird for incoming and outgoing email.

    I have been using Windows 10 for approx. a year with no issues re email compatibility between Windows and Thunderbird re email, however recently I am unable to send or forward any email using Thunderbird. There is no problem with incoming, just an outgoing
    issue. Any suggestions?
    Roald_463, Aug 16, 2016
  3. Windows 10 Mail - Will Send But Won't Recieve (Sync)

    A lot of users are complaining about it. Could you isolate the problem by setting up your account in another mail client such as Mozilla Thunderbird?

    Thunderbird — Software made to make email easier. — Mozilla

    Thunderbird — Software made to make email easier.
    Andre Da Costa, Aug 16, 2016
  4. Bastet Win User

    Thunderbird Email Problem

    Don't use Thunderbird but what happens if you enter your own email address in the To section & then put the multiple recipients in the BCC section?
    Bastet, Aug 16, 2016
  5. evhid1 Win User
    We all end up on the "To:" line
    And another thing, it always puts two send emails in the send folder, /?
    evhid1, Aug 16, 2016
  6. groze Win User
    Don't worry about it. It only sends one email. As far as the to line, are you sure it is showing to others? The reason I ask, it will show you the bcc emails even in the sent folder for your benefit. Doctor9fan is correct, you need a least one email in the to section. So, just add your own email.

    Here is some info on BCC.

    BCC - MozillaZine Knowledge Base
    groze, Aug 16, 2016
  7. Hi, again:

    In addition to excellent advice & KB link already offered....

    Is this the same computer about which you reported Tbird problems a short time ago?
    The reason I ask is that I recall your mentioning that you had been trying lots of fixes, including changes to "Manage Identities".
    I wonder if that may have broken something in your settings/profile???

    FWIW Each computer is unique, but I just tried it myself and could not reproduce the issue you are reporting now.

    What I did:
    • Compose an email from my main ISP account to several recipients (ISP, webmail and Exchange domains), all of whom were addressed as "BCC:" (in other words, there were no "To:" recipients and no ""CC:" recipients).
    What I observed:
    • Normal behavior: when the email arrived, there were no visible recipients in the header. All recipients were "blind".

    So, I am not sure why you are seeing what you see.
    It might possibly be a simple fix in the TBird settings, or it might not.
    I do not want to provide specific advice, as I do not want to break things any more than they are.

    If no one here has a good fix, you might want to consider heading over to
    It is arguably the largest, most active, most expert user-to-user community for all things Mozilla, including Thunderbird.
    I'll bet someone there will be able to sort it out.

    But perhaps someone here will have an idea first...
    MoxieMomma, Aug 16, 2016
  8. Thunderbird Email Problem

    Actually, at least in Thunderbird, one does NOT need to have at least one address in the "To:" section.*Wink
    BCC - MozillaZine Knowledge Base

    I just tried it myself with ONLY "BCC:" recipients and it worked fine.

    But, that link to the mozillazine forum you provided is very helpful.*Smile

    MoxieMomma, Aug 16, 2016
  9. groze Win User
    Your correct. I know why I said that. Sometimes your internet service may block sending an email unless there is one email in the TO: section.
    groze, Aug 16, 2016
  10. Perhaps. Good idea.
    But that may not be directly related to the issue the OP reports?

    If understand the issue correctly, the outgoing messages are not being blocked.
    Rather, the "BCC:" recipients are being changed to "To:" recipients.

    @evhid1: please tell us -- is the behavior you report today NEW? Or has it "always" been a problem?

    If it is new, then it suggests a new problem in Thunderbird (probably somewhere in your account settings or preferences).

    If is has never worked properly, then I suppose there could be an issue at the ISP level (although I doubt your ISP can silently change "BCC:" to "To:" in your outgoing messages.)

    MoxieMomma, Aug 16, 2016
  11. evhid1 Win User
    This had always been a problem. The person that informed me of this sent me a text picture of his computer screen showing everyone in the "To:" line.
    I didn't change anything in the "Manage Identities" , so I don't think that is the problem.
    I use web version and I sent email from that web site and there is no problem there.
    It seems when I use Thunderbird to send emails that's when everyone ends up in the "To:" line, visible to all.
    And to answer your first question, yes this is me!*Redface

    Went to and signed up, thanks for the tip
    evhid1, Aug 16, 2016
  12. evhid1 Win User
    Went to the and as it turns out I'm not the only one having this problem. It seems that Microsoft has dropped some kind of mail handling in hotmail and outlook when using other then Microsoft products. As it sits now if there is enough complaints "maybe" they will fix it. But I'm not holding my breath. This "we must control everything" attitude of Microsoft is really getting bad.
    evhid1, Aug 16, 2016
  13. Thunderbird Email Problem



    Do you have a link to your thread at the other forum?

    Reason for asking:
    I am using TB email client, my ISP accounts (sender and recipients) and web (gmail recipients) and Exchange (work domain recipients) accounts.
    I do not see the behavior you report, perhaps because I am NOT using or Outlook or WLM or Hotmail or anything "MS", other than the Windows OS.

    IOW, my "BCC:" works just fine from TB from my ISP account to multiple different recipients on different types of domains, with nothing MS-related.
    And I just sent an outbound message from my Gmail account in TB to the same recipients, all "BCC:" and it works fine there, too.
    I haven't tested this on my Win7 boxes, but I do not expect to see a problem.

    Bottom line for me: Tbird sends "BCC:" messages without issue from my ISP account and from my gmail account. "BCC:" stays "BCC:".

    Therefore, the problem must be with the type of account you are using to send the outgoing "BCC:" messages???

    So I guess a cumbersome workaround for you might be to change to an ISP account or a webmail account (such as gmail) for your outgoing messages?
    Either that, or I am having a total "senior" moment and do not understand the underlying problem (which is entirely possible).*chuckle

    MoxieMomma, Aug 16, 2016
  14. evhid1 Win User
  15. evhid1 Win User
    I do not want to change from to my account because I would have to inform my entire address book ( who I just got to remember to use outlook instead of hotmail because Microfrickingsoft screwed my hotmail account up) to change back. But I just may have to take your advise and start using my gmail account.
    evhid1, Aug 16, 2016

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