Lightfern for Email
The telepathic AI writing tool
193 followers
The telepathic AI writing tool
193 followers
Finish thoughts before fingers hit keys. Working directly in your inbox as a browser extension, Lightfern nails the details that make emails feel like you - nicknames, sign-offs, your tone of voice - and pulls context from past threads to finish sentences the way you would. All with zero data retention by default.












Interesting project. Why donโt you save the data? Is it because of GDPR?
Lightfern for Email
@mykyta_semenov_ย Great question! That's more of our philosophy on security and privacy: we don't want to have access to people's personal data more than we need to.
Lightfern for Email
Hey all,
I'm Matt, one of the co-founders of Lightfern
I spent years as a researcher in medtech, so privacy has always been at the heart of what I build. One of the reasons we have a zero data retention policy as default. Developing this model was technically challenging and super fun for me so I hope you like it!
We built Lightfern because we were tired of AI writing tools that are optimised for the mean. Lightfern actually learns your style - how you write, your rhythm, the way you talk.
Try it and let us know what you think!
CodeWords
I have been using it since early private beta. I tried any sort of email automation to auto draft, nothing truly saved me time like Lightfern. I love that it knows my style, but also gives me control to edit and rephrase.
Lightfern for Email
@osmanio2ย Thanks for the kind words!
I've been using lightfern since it launched in beta. Doug, Matt and Marcus, its impressive what you've built. This is truly the closest to telepathy I've experienced. I love that it lives within gmail and doesn't add any noise to my tool stack. Its been a true productivity boost and makes replying to emails addictive ๐
Lightfern for Email
@luissa_schemuthย Thanks Luissa! You're right - I never would have thought replying to emails could be this addictive!
Lightfern for Email
Over the moon to have worked on this! As a former journalist, the power of high-quality, expressive writing cannot be understated.
In the past, I've had to navigate writing my novel outside of my life and work in tech. I'm grateful to now combine my two worlds alongside such a talented technical team.
Can't wait to see what the future of communication looks like next!
Lightfern for Email
Hey ๐ I'm Jacek, a Founding Engineer at Lightfern.
I've spent most of my career in startups, which is why I'm especially excited to be here - building and shipping things end to end with a small, focused team. I'm responsible for product delivery across the stack, so if you've got any questions (technical or not), I'm very happy to answer.
What I love about Lightfern is that it's always there when you're stuck - whether that's wording, simplifying an over-complicated sentence, or just getting unstuck.
So, please try it out and share your thoughts ๐ค
Lightfern for Email
Hello! Marcus here, co-founder at Lightfern.
Super excited to hear any and all feedback from everyone! Weโre all very keen to build a product for you.
Happy to answer any questions on the technical aspects of Lightfern too. I love a good discussion!