[josefx]

At least one of his points is already addressed by the twitter thread he links: Debians bug tracker behaves correctly, Gmail just ignores the information included in the email headers to group them.

So he has been told that this is a Gmail issue, but insists on using it. Meanwhile he complains that the rsync package maintainer is blocking his changes out of personal preference. Double standards much?

[galgalesh]

Gmail is an immensely popular email provider with 1.5 billion users in 2018. It has 65% of US market and even on a global level it's the leading email provider.

This is not some esoteric email client that a handful of developers refuse to let go.

[josefx]

But it still is the source of the faulty threading behavior. The issues also seems minor enough that there is no point in adding a hack on Debians side to make the output on googles proprietary endpoint look better.