Thunderbird in Microsoft Store

Mark Banner mbanner at
Wed Jun 5 09:26:42 UTC 2019

On 30/05/2019 19:52, Eric Moore wrote:
> This raises a related question. Many Linux distro's have their own 
> build of Thunderbird. While they have some modifications I don't 
> consider them a port. They're just a distro specific build, and 
> something you can expect to get support from at SUMO and MozilaZine 
> despite not being released by Mozilla. What determines whether an 
> email application can legally call itself Thunderbird?

I would suggest that the council discusses this with the Mozilla legal team.

There are various guidelines for the use of Mozilla's trademarks 
and there's also guidelines for the distribution of Firefox 
It is slightly unclear, but looking at the Firefox rules and if it was 
myself doing the port, I'd probably ask for written permission or at 
least double-check it wasn't necessary.

Hence, I think this should at least be checked/discussed with legal as 
part of standard trademark checking.


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