# Mozilla Thunderbird question

**URL:** <https://boards.straightdope.com/t/mozilla-thunderbird-question/284719>\
**Category:** Factual Questions\
**Created:** [January 14, 2005, 3:07pm UTC](https://boards.straightdope.com/t/mozilla-thunderbird-question/284719 "2005-01-14T15:07:47Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![CynicalGabe](https://avatars.discourse-cdn.com/v4/letter/c/3e96dc/32.png) [@CynicalGabe](https://boards.straightdope.com/u/CynicalGabe)\
**Post date:** [January 14, 2005, 3:07pm UTC](https://boards.straightdope.com/t/mozilla-thunderbird-question/284719/1 "2005-01-14T15:07:47Z")

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When I receive an email, sometime the header does not give me the “To” information. I am trying to find out if some emails are being sent to me or to a list, or to a number of addresses.

From this person I have received headers like this:

To: (my email)  
To: (my email) (email1) (email2) (etc)

and sometimes there is no “To” header displayed.  
when i choose to display “full/all” headers, it tells me under “x-apparently to:” that it is sent to me, but it says the same thing even when the normal “to” header shows multiple addresses.

I hope this is coherent. anyone know the answer?

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**Author:** ![Kymodoce](https://avatars.discourse-cdn.com/v4/letter/k/8797f3/32.png) [@Kymodoce](https://boards.straightdope.com/u/Kymodoce)\
**Post date:** [January 14, 2005, 3:38pm UTC](https://boards.straightdope.com/t/mozilla-thunderbird-question/284719/2 "2005-01-14T15:38:49Z")

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A couple of quick questions:

1. What build/version of Thunderbird?

2. Are the e-mails all from the same sender?

It sounds a bit like mailing list behaviour to me.

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**Author:** ![CynicalGabe](https://avatars.discourse-cdn.com/v4/letter/c/3e96dc/32.png) [@CynicalGabe](https://boards.straightdope.com/u/CynicalGabe)\
**Post date:** [January 14, 2005, 4:00pm UTC](https://boards.straightdope.com/t/mozilla-thunderbird-question/284719/3 "2005-01-14T16:00:10Z")

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thunderbird 0.9

all from the same sender, who is an actual person

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**Author:** ![CynicalGabe](https://avatars.discourse-cdn.com/v4/letter/c/3e96dc/32.png) [@CynicalGabe](https://boards.straightdope.com/u/CynicalGabe)\
**Post date:** [January 14, 2005, 11:40pm UTC](https://boards.straightdope.com/t/mozilla-thunderbird-question/284719/4 "2005-01-14T23:40:07Z")

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Can noone help me?

_sniff_

Has anyone else had this problem/issue? I think the same thing use to happen in Eudora, but I’m not sure.

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**Author:** ![buckgully](https://avatars.discourse-cdn.com/v4/letter/b/eb9ed0/32.png) [@buckgully](https://boards.straightdope.com/u/buckgully)\
**Post date:** [January 15, 2005, 12:05am UTC](https://boards.straightdope.com/t/mozilla-thunderbird-question/284719/5 "2005-01-15T00:05:21Z")

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Are they possibly using BCC: instead of To to send stuff to you?

Just a thought. I use BCC to large lists if I don’t trust some of the people (read: less than technical family members) to not hit “reply all” with something inane.

You won’t have a To: entry in the header if the recipients are all BCC:ed. I just tried.

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**Author:** ![Lord\_Ashtar](https://avatars.discourse-cdn.com/v4/letter/l/7ea924/32.png) [@Lord\_Ashtar](https://boards.straightdope.com/u/Lord_Ashtar)\
**Post date:** [January 15, 2005, 2:18am UTC](https://boards.straightdope.com/t/mozilla-thunderbird-question/284719/6 "2005-01-15T02:18:24Z")

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They’ve got a version 1.0 now. Maybe upgrading will help?