About Gravel

Gravel is a proactive personal AI assistant that lives in the messaging apps you already use: WhatsApp and Telegram, with iMessage coming. iMessage needs Apple's approval first. It reads the email and calendars you connect, notices what needs you, and texts you first. When you say yes, it handles the task and tells you when it is done.

It connects to Gmail and Outlook (you sign in with Google or Microsoft) and to iCloud Mail, GMX, WEB.DE, T-Online, freenet, mailbox.org, Posteo and other IMAP mailboxes, which connect with an app password. Calendars: Google Calendar, Outlook Calendar, iCloud Calendar and any CalDAV calendar. Because the conversation happens in a chat thread you already have, there is nothing new to install.

The planned price is €12 a month with everything included. It is in early access: you join a waitlist and get one email when your spot opens. See how it works, the integrations and pricing.

Gravel is built in Munich, Germany, by Victor Gulchenko, its founder. The imprint and the privacy notice name him as the provider of the service and the person responsible for your data.

Victor has also built two other products. Mimiq sends simulated customers through a website in a real browser and reports where they get stuck. Pretake is an iPhone app for rehearsing a text with an AI version of the person before you send the real message.

Around five principles, each one implemented in code and covered by automated tests rather than left to a prompt.

• Proactive, not noisy. For every possible message, Gravel weighs how urgent it is, how much it matters and how sure it is of the facts, plus how you reacted to similar messages before. Then it applies your quiet hours (10 PM to 7:30 AM by default), your meetings and a daily limit. If you ignore a kind of message, it sends fewer, never more.
• Talks like a person. Short messages in your language and your tone, without markdown or filler. It always presents itself as an AI, never as a person.
• Never misses the urgent. Detection of urgent mail is built to favor catching it over staying quiet, and a change cannot ship unless the evaluation suite scores 100% on urgent recall. That is a result on test data, not a promise about every inbox.
• A malicious email cannot make it do anything. Gravel assumes a model will sometimes follow instructions hidden in an email. So the model can only propose an action, and separate fixed code decides whether it is allowed, needs your yes or is refused. This is tested with a deliberately gullible model that obeys every instruction it finds. Details are on the security page.
• You can see and delete everything. Ask "what do you know about me?" or "what did you look at today?" and Gravel tells you. Tell it to forget something and it does. Export your data, or delete your account and your encryption key is destroyed, so nothing left can be read.

Gravel is early. These principles describe how it is built and tested, and the security page says what has and has not been verified yet.

Email victor.gulchenko@gmail.com for questions about the company, press requests or anything else. It reaches Victor Gulchenko directly.

The postal address and legal details are in the imprint. Journalists will find the boilerplate, key facts and logos in the press kit. To report a security problem, see security and privacy. To use the product, join the early-access waitlist.