Control the conversations
that run your business.
Sentra reads your important threads, surfaces the right next step, and lets you approve, edit, or reject. Nothing is sent, booked, or scheduled without your explicit decision.
Currently in validation with operational founders across Italy and Europe.
This is how Sentra feels.
Below is a real Proposal Card. Click Approve, Edit, or Reject to see what happens.
Re: Follow-up — Partnership proposal with Marco Rossi
Marco followed up after last week's intro call. He's asking about timeline and next steps. Tone is warm, moderate urgency.
Reply confirming interest and propose two time slots for a 30-minute call this week.
And this is your full day, organized.
From a single proposal to the complete cockpit — see how Sentra holds your inbox together.
Important conversations don't manage themselves.
Founders and operational executives spend hours navigating threads that should take minutes — without the confidence that nothing slips.
Speed without control isn't a real option
Generic AI tools act before you decide. Faster, yes — but you lose visibility on what was actually said and committed in your name.
Follow-ups slip through the cracks
Important commitments live inside threads no one revisits. Until it's too late and the relationship is the one that pays.
Scheduling turns into ping-pong
Back-and-forth coordination eats hours that should go to execution. And often a single missed reply restarts the whole loop.
Three steps. Full control.
Connect
Link your Gmail and calendar. Sentra reads your threads and learns which conversations matter.
Sentra proposes
For every important thread, Sentra surfaces a Proposal Card — not an auto-reply. A clear next step, a draft, a scheduling option, with full context and a confidence signal.
You decide
Review the proposal. Approve it, edit it, or reject it. Nothing happens without your explicit action. Always.
Thread → Proposal → Decision. In 25 seconds.
Watch how Sentra turns an important email into a clear next step you can approve, edit, or reject.
Built for control, not convenience.
Thread Intelligence
Sentra reads the full context of a conversation — not just the last message. It identifies what's needed, what's at risk, and what the right next step is.
Approval-first by Design
Every action — reply, booking, follow-up — requires your explicit Approve. Not a toggle. Not a setting. A structural guarantee.
Proposal Cards
Each Proposal Card shows: summary, recommended action, suggested draft, missing context, and a confidence signal. Everything you need to decide in seconds.
Follow-up Ledger
Sentra tracks every commitment made in your threads. Promises you made. Promises made to you. Nothing disappears.
Safe Scheduling
Scheduling proposals respect your calendar rules, buffer times, VIP handling, and "never book" windows. No surprises.
Audit Trail
Every decision — Approved, Edited, Rejected — is logged. You always know what happened, when, and why.
Not another AI email tool.
| Sentra | Superhuman | Fyxer AI | Google Gemini | Human EA | |
|---|---|---|---|---|---|
| Approval-first governance | ✅ | ❌ | ❌ | ❌ | Not structural |
| Nothing sent without approval | ✅ | ❌ | ❌ | ❌ | Trust-based |
| Proposal Cards with context | ✅ | ❌ | Partial | Partial | ✅ |
| Follow-up tracking | ✅ | ❌ | Partial | ❌ | ✅ |
| Personal memory (VIPs, style) | ✅ | ❌ | ❌ | Partial | ✅ |
| Audit trail | ✅ | ❌ | ❌ | ❌ | ❌ |
| Cost | €50/mo | ~€30/mo | ~€50/mo | Free with Workspace | €2,000+/mo |
| Available 24/7 | ✅ | ✅ | ✅ | ✅ | ❌ |
Shape Sentra from the ground up.
We're working with a small group of operational founders who want to build the next standard for email and calendar governance. Design Partners get early access, direct influence on the product, and terms that won't be available again.
- Early access to Sentra before public launch
- 50% off for your first 6 months (€50/month reference price)
- Direct line to founders — your workflow shapes the product
- Full refund if Sentra does not pass validation
- Founding member status and recognition
The €69 fee is a commitment signal, not a subscription. Fully refundable if Sentra does not pass validation.
Stop reacting.
Start governing.
Join the first cohort of design partners shaping how operational founders run their inbox.
Become a Design Partner →Who's behind Sentra.
Sentra is built by two operators who've lived the problem. Not a faceless AI startup.
Mattia Riccò
Founder & CEO
Building Sentra to give operational founders the speed they need — without the loss of control they can't afford.
Connect on LinkedIn →Pietro Chioda
Co-Founder & CTO
Engineer and co-founder. Building the infrastructure that makes approval-first email actually work at scale.
LinkedIn profile coming soon
Frequently asked questions.
It's a commitment signal. We use it to filter founders who are serious about improving their email and calendar workflow — not casual interest. It's fully refundable if Sentra does not pass validation.