Proposal: MailExtensions API to allow UI overlays, but no script injection

Eyal Rozenberg eyalroz at
Sat Oct 12 14:56:39 UTC 2019

Sorry for sounding like a broken record, but:

On 12/10/2019 9:25, John Bieling wrote:
> Why is it, extension should no longer be able to style the UI as before? 

... not just the UI. Extensions should be able to do essentially 
everything. Certainly everything the TB's own UI code can do.


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