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I want to disable the BCC field in Mozilla Thunderbird. I delete the BCC command in JS but it still working

File Path :C:\Program Files (x86)\Mozilla Thunderbird\distribution\extensions{e2fda1a4-762b-4020-b5ad-a41df1933103}\components

File Name:calItipEmailTransport

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Alone
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  • You probably can't without studying and patching the source code of mozilla thunderbird. then recompile it. And socially, you should not: there are sometimes good reason to BCC. – Basile Starynkevitch Apr 13 '18 at 05:47
  • My work nature requires to hide BCC . – Alone Apr 13 '18 at 05:49
  • I don't understand what "work nature" means. But if you really need to do that: 1. you'll need weeks (or perhaps months) of work (to study, improve the source code of thunderbird), and 2. remember people can use other mail agents (e.g. use some gmail account thru the web). I don't think it is worth spending months of work on that. – Basile Starynkevitch Apr 13 '18 at 05:52
  • we have restricted users to use only thunderbird – Alone Apr 13 '18 at 05:54
  • So you are using social means (which is good) to forbid users to use anything else than thunderbird. Use the same social means to forbid BCC. Publish an internal rule forbidding BCC. Otherwise, ask your manager to allocate you several months of work to understand and patch thunderbird, and fork that [free software](https://en.wikipedia.org/wiki/Free_software) project internally. I really think it is stupid to do so, but your manager could allocate resources on improving and patching thunderbird – Basile Starynkevitch Apr 13 '18 at 05:54
  • Read much more about [SMTP](https://en.wikipedia.org/wiki/SMTP). Your organization might add some filtering at the SMTP level – Basile Starynkevitch Apr 13 '18 at 06:00
  • Are you aware that even if you remove BCC, the enduser could still resend the same email to another person? So what you want to do takes months of work, and is futile (because the enduser could still send "blindly" the same information). Again,think at the SMTP level, and understand what email is and the difference between [mail user agent](https://en.wikipedia.org/wiki/Email_client) and [mail transfer agent](https://en.wikipedia.org/wiki/Message_transfer_agent) – Basile Starynkevitch Apr 13 '18 at 07:34
  • You are right..Thanks – Alone Apr 13 '18 at 10:59
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    Yes, I think this would be better done by your company outgoing mail server. However, I agree with @Basile - it seems that this is a case of using technology to force people to take a certain action, rather than developing a positive relationship between managers and staff and trusting them to respect the rules put in place. Ultimately, I personally prefer to work for firms that deliberately avoid authoritarian and top-down approaches to staff management, and any workplace that regards workers as a threat to be contained is suspect by default, in my book. – halfer Apr 13 '18 at 17:21

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