Re: Accessibility of the items in the message filters list in Thunderbird
The most helpful thing that you could do, if you are able, is to present
suggested changes to the message filter code that would improve the
accessibility. Although you could do that in an extension, it would be
better to do it in the core code, and that would not require you to know
anything about extensions. But you would have to know how accessibility
is added to HTML and XUL.
That is, file a bug and submit a patch for review.