Days of access to non-UI internals are over?

Graeme musiquegraeme at
Mon Oct 14 14:25:19 UTC 2019

What my addon does: in Composer window :

I expand the mailing list items in the To, CC, Bcc array

I listen for emails being sent

Then I test the addresses that the email is being sent to and

Bring up a prompt if the emails are being sent contrary to settings in preferences.

This is relatively easy with MailExtension Experiments.

Does this discussion mean that this will all be impossible once Experiments are stopped?


On 14/10/2019 14:41, Eyal Rozenberg wrote:
> (I changed the title to stop hijacking the discussion John Bieling started about an 
> overlay API.)
> On 14/10/2019 16:26, Tanstaafl wrote:
>> On 10/10/2019, 4:29:29 PM, Eyal Rozenberg <eyalroz at> wrote:
>>> UI APIs are not what I'm concerned about. I need access to non-UI stuff
>>> in Thunderbird. In fact, I need more access than I have today.
>> I think it  has been made crystal clear that those days are over.
> What? No that hasn't. Show me the relevant council resolutions.
> I realize that right now the devs are trying to hang on to a runaway train which keeps 
> detaching cars; but I was talking about the mid-and-longer-term (mostly).
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