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Your deals live in your chats. Corner won’t let them go quiet.

Corner reads your Telegram and WhatsApp, builds your pipeline by itself and taps you on the shoulder when someone’s waiting on you. You still write every word.

See how it works
  • Telegram
  • WhatsApp, read-only
  • Email next

Live demo. Try the buttons on the card.

  • DW Dana Whitfield Can you send pricing for 12 seats? Tue
  • BD BD Lounge who’s going to Lisbon next week? 312
  • MI Marco Ilić You: Here’s the revised proposal Mon
  • M Mom Did you eat? 10:02
  • PR Priya Raman Great, send the case study when you can Wed
  • KM Kofi Mensah Thanks, talk next week 09:15
Dana Whitfield Northwind Logistics
  1. Tuesday
  2. Hi! The team loved the demo yesterday.
  3. Glad to hear it. Ask me anything.
  4. Can you send pricing for 12 seats? We’d like to decide this week.

Your move 2d 0h +2

Reply owed: Dana Whitfield

She asked for pricing 2 days ago.

“Can you send pricing for 12 seats?”

Northwind LogisticsProposal

Demo data. Every name and company on this page is made up.

Most deals die of silence.

Nobody said no. Somebody forgot to write back.

Dana Whitfield Can you send pricing for 12 seats? 2 days Waiting on you
Marco Ilić You: Here’s the revised proposal 4 days No answer yet
Lena Vogt Let’s pick this up after the holidays 16 days Going cold
Tomás Ferreira Sounds good, talk soon 41 days Gone quiet

  • Your pipeline is scattered across three apps.

    Deals sit between family chats, a group with 312 unread and an inbox full of newsletters. The one that matters scrolls away by lunch.

  • The CRM wants data entry.

    Nobody does data entry. So the CRM lives in a tab nobody opens, and it has no idea what happens in Telegram or WhatsApp.

  • Reminders don’t know what was said.

    A reminder can’t tell who owes the next message, or that you promised the deck on Monday.

“Let’s say I have a pending sale with Elmir. It continuously goes through my chats and says ‘yo, you have not written to Elmir in 5 days, here is the window, follow up now’. … I can imagine every salesperson I have ever had, including myself, needs this.”

Design partner, B2B sales

From install to inbox zero for deals.

  1. Connect Telegram and WhatsApp.

    Scan a QR code, the way you’d link a laptop. Your chats sync to this computer, encrypted. Not ready to connect anything? Start with the demo.

  2. Get your pipeline in 60 seconds.

    AI reads your recent chats and finds the deals. You flick through them: J to track, K to ignore.

  3. Get nudged, with a reason.

    When a deal is waiting on you, a card appears in the corner of your screen. It says who, why and since when.

  4. Reply, and it clears itself.

    Write back from Corner, or in WhatsApp itself. The nudge disappears on its own. No boxes to tick.

Try it on made-up deals first.

Pick “Try it with demo data” on the first screen. You get a pipeline of invented deals, a card in the corner and a reply that comes in while you watch.

  • No Telegram, WhatsApp or AI key needed.
  • Runs in its own profile. Close it and it’s wiped.
The Today screen in demo mode: everyone waiting on you, most urgent first, each with a reason and a clock.

Telegram and WhatsApp. Email next.

  1. Telegram In private beta Official Telegram login. Read, track and reply from Corner’s chat pane.
  2. WhatsApp Built. Read-only. Corner reads WhatsApp Web in its own window. There’s no composer, so it can’t send from your number. Open in WhatsApp takes you straight to the chat.
  3. Email Next Any IMAP inbox with an app password. Corner never marks mail read or moves it, and a reply goes out only when you hit Send.

Same person, one deal.

Dana asks for pricing on Telegram, says yes on WhatsApp and sends the order form by email. Corner keeps it on one deal with one clock, so it nudges you once, wherever she wrote last.

Sure matches join on their own.
The same email, phone number or Telegram username. One click undoes it.
Hunches ask first.
A signature that mentions her Telegram, or the same name at the same company, shows up as “Same person?” You decide.

Clear the decks before your first call.

Pick a sprint time. When it comes, Corner lines up everyone who’s waiting on you and hands them over one at a time, until nobody is.

  1. 09:30

    The card asks.

    A call ran over? Snooze it for 30 minutes.

  2. 09:31

    One deal at a time.

    The chat, the context and a draft if you want one. Send, and the next deal comes up.

  3. 09:44

    Nobody’s waiting on you.

    The corner stays quiet until somebody is.

You set how hard it pushes.

Calm by default. Relentless if you ask for it. Working hours and quiet hours always win.

Standard

A card appears in the corner and hides after 30 seconds. If you ignore it, it comes back after 4 hours, up to 3 times a day.

A sprint at 09:30, then cards at 10:12, 14:12 and 18:12.

Defaults: Monday to Friday, 09:00 to 19:00, at most 15 new cards a day. The sprint time is optional. All of it is yours to change.

Corner never sends a message for you.

You write. You hit Send. That’s the deal. On WhatsApp it only reads, and you reply in WhatsApp itself. It’s also why your accounts stay safe: automated sending is how Telegram and WhatsApp accounts get banned.

Where your chats live
Encrypted on your computer, under a random 256-bit key that your system keychain locks. Nowhere else.
Corner servers
None. The app talks straight to Telegram, WhatsApp and Anthropic from your computer. Your chats never reach us.
What leaves your computer
Text from the chats being analyzed, sent to Anthropic’s API with your own key. Chats you ignore aren’t analyzed after the first pass.
When you delete
Forget a chat or delete everything, and Corner re-encrypts what’s left under a new key and overwrites the old one. Leftover copies on the disk stay locked for good.
Your say, per chat
Exclude any chat and it’s never read. Mark it “not a deal” and it’s never nudged.

Built for follow-through.

  • It sits on top.

    Keep Telegram, WhatsApp and email. Corner works over them, so there’s no new inbox to move into.

  • It holds you to it.

    It counts the follow-ups you actually do. It will never do them for you.

  • You type nothing.

    Stages, promises and who owes the next message come from the conversation itself.

  • Every nudge explains itself.

    A rules engine decides when to interrupt, the same way every time, and the card always says why.

How Corner compares with a typical CRM and a reminder app
Question Corner A CRM A reminder app
Knows what was said Yes If you paste it in No
Pipeline needs typing No Yes There is none
One person on two channels One deal Two records No idea
Shows up when it’s your move In the corner In a tab When you set it
Clears when you reply Yes No No

Planned pricing.

These are the prices we plan to test during the beta. They may change. Each plan is planned to start with a 14-day free trial.

Solo

One closer, one channel.

$29per month

  • Telegram
  • Pipeline built from your chats
  • Nudges with a reason
  • Snooze, done and dead in one click

Pro

Every channel, every tool.

$49per month

  • Everything in Solo
  • All channels as they ship
  • AI drafts you edit and send
  • Sprint mode
  • Insights on your follow-ups

Team

After the beta. Minimum 3 seats.

~$39per seat, per month

  • Everything in Pro
  • Manager view
  • Shared playbooks

Questions, answered.

Does it ever send messages for me?

No. Never. On Telegram, a message goes out only when you press Send in Corner. On WhatsApp it only reads, and you reply in WhatsApp. AI drafts fill the box and wait for you.

Can I try it before connecting anything?

Yes. Pick “Try it with demo data” on the first screen. You get made-up deals, a card in the corner and a reply that comes in while you watch. It runs in a separate profile that’s wiped when you close it.

Is it safe for my Telegram and WhatsApp accounts?

Corner signs in to Telegram with the official login and syncs at conservative rates. WhatsApp runs as WhatsApp Web in its own window, and Corner only reads it. It never sends or automates anything, which is what gets accounts restricted.

Where are my chats stored?

On your computer, encrypted. We don’t run servers that hold your chats. When you forget a chat or delete everything, Corner switches to a new encryption key, so deleted data stays unreadable.

What happens when someone writes on two channels?

It stays one deal. The same email, phone number or Telegram username joins automatically, and you can undo it. Anything less certain shows up as “Same person?” for you to confirm.

When does email arrive?

It’s next. You connect an IMAP inbox with an app password. Corner never marks mail read or moves it, and a reply goes out only when you press Send.

What does the AI see?

Text from the chats that look like deals, sent to Anthropic’s API for analysis with your key. Chats you ignore aren’t analyzed after the first pass, and excluded chats aren’t read at all.

Do I need my own AI key?

In the beta, yes: you paste an Anthropic API key. Without one, Corner still nudges on timing alone. A hosted option is planned so you won’t need a key.

What if it nags too much?

Switch to Gentle, set quiet hours, lower the daily cap, or mark a chat “not a deal”. That chat is never nudged again.

Which computers does it run on?

Windows, and Macs with Apple silicon. Beta builds aren’t signed yet, so your computer warns you once when you install.

How do I get in?

Corner is in private beta. Ask Elmir or C for an invite.

Your move.

Someone in your chats is waiting on a reply right now. Corner makes sure it’s never for long.