Custos creates emails in seconds that match the context of your conversations and sound just like you directly from your inbox. You never have to start from scratch again.
We built Custos because we were spending way too much time writing emails that should have taken seconds. Drafting, rewording, overthinking all added up to hours lost every week.
Custos helps you reply faster by automatically drafting emails in two ways: it pre-generates responses the moment an email hits your inbox and it instantly writes replies when you hit respond. You don’t need to change how you work. Custos works directly from your Gmail inbox through a Chrome extension and API combination. Your emails stay natural, contextual, and sound just like you.
If you’re curious, we’d love for you to give it a try and share any feedback, questions, or ideas. People from companies like dLocal, Tabby, Puzzle, Antler and Web Summit are already using Custos and helping us make it better every day.
@busmark_w_nika Hello Nika! We are CASA Tier 2 certified which an industry-recognized security standard backed by Google. CASA Tier 2 means our application has undergone independent verification by an authorized lab to ensure it meets strict security requirements for handling sensitive Google API data. Processing is fully automated, and no human reads or accesses your email data.
We've built this product to be as simple and intuitive to use as possible. If you've tried using Gemini in your Gmail and you never used it again, our product is for you!
Custos helps me save those precious "micro-minutes" in every email. What I appreciate most is how it keeps responses professional while staying in context with previous conversations. It doesn’t feel generic, it feels like a natural continuation of my own voice. A great tool for anyone managing multiple threads and wanting to stay efficient without losing the human touch.
Custos is great because it 'just works'. I find with these new AI tools often they make big promises but when you go to actually use them...they suck (aka gemini's built in email writing tool). I've been looking for a simple, easy to use tool that makes getting to inbox 0 faster...and this is it. Custos understands my writing style and does a good job of historical context to draft emails that sound like me. I usually just have to add a few words and hit send...which is exactly what I am looking for. The 'adjust' feature where you can prompt it to change the email works well but I haven't gotten used to it yet. Definitely recommend this tool...I use it everyday.
Hi Product Hunt 👋
I’m Khalil, one of the founders of Custos.
We built Custos because we were spending way too much time writing emails that should have taken seconds. Drafting, rewording, overthinking all added up to hours lost every week.
Custos helps you reply faster by automatically drafting emails in two ways: it pre-generates responses the moment an email hits your inbox and it instantly writes replies when you hit respond. You don’t need to change how you work. Custos works directly from your Gmail inbox through a Chrome extension and API combination. Your emails stay natural, contextual, and sound just like you.
If you’re curious, we’d love for you to give it a try and share any feedback, questions, or ideas. People from companies like dLocal, Tabby, Puzzle, Antler and Web Summit are already using Custos and helping us make it better every day.
Visit our website and try Custos for free at https://www.withcustos.com/
@khalil_osman1 Hey! Congrats on going live, upvoted, we launched today as well and your feedback would help.
Visla
@khalil_osman1 great job Khalil! Good luck on the launch!
@mogabr Thank you!
Does the data from the email somehow get processed by you/or seen?
@busmark_w_nika Hello Nika! We are CASA Tier 2 certified which an industry-recognized security standard backed by Google. CASA Tier 2 means our application has undergone independent verification by an authorized lab to ensure it meets strict security requirements for handling sensitive Google API data. Processing is fully automated, and no human reads or accesses your email data.
@abdelrahman_tarek3 Any plans to undergo SOC certification?
@abdelrahman_tarek3 @busmark_w_nika Yea! That's in the future roadmap
We've built this product to be as simple and intuitive to use as possible. If you've tried using Gemini in your Gmail and you never used it again, our product is for you!