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oh mozilla, why don't you just focus on Firefox. That is all we want.
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Curious name choice, that's clearly encumbered by other trademarks.

Also, my impression is: yay another AI front-end. What does this one differently that the other thirteen in a dozen don't?

"Mozilla Bubble" Building things no one wants.
Yikes.

Could Mozilla hand over firefox to a new team please? It is clear they are wasting time and energy on things nobody wanted - who wants Mozilla-AI please? I mean, seriously?

For people who don't think Mozilla wants to make firefox competitive again; and for those who also don't think ladybird will become a viable alternative one day (that's for the future, I have no crystal ball, I am just pointing at one possibility here). Perhaps we could get more momentum when someone else other than Mozilla handles firefox.

If this wouldn't be under Mozilla/Thunderbird Org on Github, I would have considered this to be fake. It looks very unsubstantial ...
I thought Mozilla was going to join the Thunderbolt standard and/or making some tool for it until I clicked the link haha. Very interesting name choice
Chrome on Linux is ~1.47 times faster than Firefox on the Jetstream 3 benchmark as recently reported by Phoronix[0]. That's how we want you to spend the money Mozilla, keeping up with your well-funded rival Google, and making it so we don't end up with a browser monoculture. These sorts of distractions just piss me off, and are not part of your core mission.

[0]: https://www.phoronix.com/review/firefox-chrome-2026

I'm gonna deploy it on my machine and try it! Better option than using ChatGPT or Claude.
If I may, Mozilla, you shouldn't release half-ass products that looks vibe coded like this, even the website looks like it took 30min to do with Claude
Some confusion I see here is lots of people seem to not know that MZLA who makes Thunderbird and Mozilla Corporation who make firefox are separate entities in the Mozilla Foundation umbrella. This Thunderbolt is a MZLA product... so ya
Addressing the usual few complaints folks always bring up:

* This is from the separate independent team that works on Thunderbird, not Firefox, so there isn't any resource contention happening there

* Thunderbird is revenue positive, and this potentially gives that team another revenue stream to be even more self-sustaining through charging companies

* Businesses definitely want to control the AI they're using (especially with RAGs of their own data) instead of just throwing it at their LLM vendor and hoping for the best

People on HN are fond of asserting that their own POV is the only one. Imagine that there is such a thing as a person in charge of choosing technologies for organizations, and that you're such a person. That's who this is for.

Aw, another AI thing. I was hoping this was their email service.
Lots of negative posts here, who presume to speak for others. I, for one, welcome new entrants especially since they're under the Mozilla umbrella. This client could use the passwords and cookies stored in Firefox. And I'd trust it too, unlike other clients.
Good thing they didn't name this Unity or Proton. We are seriously running out of names for applications and services, ar we?
It's weird that they would name it like thunderbird
No way they really named it thunderbolt. I mean. Seriously? What is next Mozilla USB-C vibeslop?
What even is this? A chat frontend to arbitrary model providers on the backend - I guess that's sort of useful not to have to build yourself but it doesn't feel like the amazing thing they're trying to hype. Some of the features seem a bit weird to me too - like end-to-end encryption? There isn't a server intermediary, so you already have that with TLS to the model provider.
Wow this is a confusing name.

At a glance it looks identical to Mozilla Thunderbird, but has nothing in common.

And then of course it's also the same as a well-known hardware interface.

I know it's hard to come up with names and pretty much everything is used by something else, but this seems particularly bad.

For anyone reading this that has worked on the launch of this new product (or the many others of their ilk throughout the years) under the various Mozilla orgs, I mean no disrespect, however I feel it's important to not mince words these days..

I implore ANYONE at Mozilla org to please, please stop working on projects distracting from the complex and necessary work of browser and web standards stewardship. That alone should be the very reason for your continued existence if you have any. Focus on anything outside that purview will lead to the furthering of the, already painful and readily apparent, stagnation of your browser and our standards bodies as entities distinct from corporations.

Ditching any direct financial ties to Google or any other browser vendor is both important and necessary at this point, as this clearly represents a conflict of interest in your overall mission.

The web as a platform should belong to us all, not just the few corporate leaders of the day. I've watched in real time, saddened by the persistent errosion of our commons that is the web. I see it becoming nothing more than a corporate playground should trends continue, if it's not already too late. There may have been a time when your mission took precident over product launches of seemingly unrelated domains, but that is not what Ii observing today.

I think I speak for many in the community in these regards (please correct me if not the case.)

> I implore ANYONE

I implore ANYONE about to write a similar post to avail themselves of the search bar to not Groundhog Day us. Someone should do a "History of HNers railing ignorantly about Mozilla and Firefox" coffee table book; would link the buy page in my group chats.

I swear there are like 10 different Thunderbolts. Why reuse such a common name?