Backed byY Combinator

Build AI people can text, call, and FaceTime.

Give your agent a phone number for iMessage, SMS, and FaceTime audio and video.

Alex Rivera

iMessage
Today 9:41 AM

Hey! Is the place on Willow St still available?
It is! Would you like to see it?
Yes, tomorrow afternoon?
I have 3:00 or 4:30. What works for you?
3 works for me!
Booked. See you there!

Delivered

In your appViewing booked.

What we do

Make iMessage and FaceTime programmable at scale.

Start trusted conversations

Blue-bubble threads from verified numbers, delivered like native iMessage.

Jamie Chen
iMessageToday 9:41 AM
Hey Jamie, your workspace is ready.
Thanks! Can I invite my team?
Of course. Open Settings → Members → Invite.
Found it. We’re all in!
Great. I’m here if you need a hand.
Delivered
FaceTime video

Agents you can see

Face-to-face conversations with your AI. Let people show your agent what they need help with.

Illustrative FaceTime conversation between a person and an AI avatar

Keep the thread warm

Typing, reactions, and reply context stay intact for AI or human follow-up.

Juniper Café
The new menu looks great.❤️
Thank you! See you soon.
FaceTime audio

A voice on the other end

Let people talk things through with your agent. Natural conversations, right inside FaceTime.

Loop in the right people

Run multi-recipient threads with named senders and clean handoffs.

Viewing on Saturday
Jamie
We’ll both be there at 3.
Maya
Can’t wait to see it!
Perfect. See you both then.

Recover unreachable contacts

Fallback to SMS or RCS when someone is off iMessage.

Sam
Text Message · SMS
Your appointment is now Tuesday at 2. Does that work?
Sent as Text Message
Yes, thank you!

Know what happened

Delivery receipts and webhook-ready status per message.

Taylor
Your order is ready. See you soon!
Read 9:41 AM
ChertMessage statusRead

Read receipts when available.

Voice notes

I’ve sent a quick walkthrough.
Where it works

Built for any workflow where a message or call should become an action.

Jamie Chen

iMessage
Today 9:41 AM

Hey Jamie, your workspace is ready.
Thanks! How do I invite my team?
Open Settings → Members → Invite. Want a hand with setup?
Yes please, tomorrow at 11?
See you at 11!

Delivered

In your appSetup call scheduled.

Built on Chert

Our ecosystem.

Getcho

How Getcho Is Moving Its Notifications from SMS to iMessage

Agentic delivery operations
for brands like:

DELTAEATALY
Read the story
Brodie’s gym coach mascot

brodie

An AI gym coach you can
FaceTime and iMessage.

Integrations

One thread, everywhere your team works.

API docs
Your AI companion
Daily check-inPresentation day
Conversation updated
Chert
Milo AI companion
How did the presentation go?
Better than I expected!
Delivered
What was the best part?
Pricing

Start free. Find your line.

Try your agent, keep building on a shared line, or get a dedicated line from your dashboard.

Free

$0/24-hour trial

Try Chert on a shared line for 24 hours.

50 FaceTime min + Unlimited iMessage

24-hour trial. Messaging rate limits apply.

Start free trial

Set up your agent and start your 24-hour trial.

Dedicated

$250/month per line

A dedicated line for your project.

Dedicated FaceTime + iMessage line

Billed monthly. Dedicated business support included.

Book a callGet started

Open your project, then Billing to purchase a dedicated line.

Plan comparison

Compare what’s included.

Free is a 24-hour trial. Shared and Dedicated are monthly subscriptions.

Scroll sideways to compare all three options.

Features and limits for the Free 24-hour trial, Shared, and Dedicated plans
FeatureFree24-hour trialSharedDedicated
Line & access
Line typeShared · up to 6 customersShared · up to 6 customersDedicated to your project
Total usersAcross FaceTime and iMessage.100100Unlimited
Access period24 hours · trial expiresBilled monthlyBilled monthly
FaceTime
Audio & video50 min/day per customer · 5 min/call50 min/day per customer · 5 min/callVideo requires a compatible agent and qualified line.
Concurrent calls1 per shared line1 per shared line1 per dedicated line
Calling accessOutbound enabled. For inbound, verify your phone or whitelist up to 100 user numbers.Outbound enabled. For inbound, verify your phone or whitelist up to 100 user numbers.Your project’s dedicated line
iMessage
MessagingUnlimited inboundUnlimited inboundUnlimited inbound + outbound
Hourly rate limit50 messages100 per customer · 400 across the lineNo rate limit
Agent messagingNo agent-initiated outbound messagesReplies and messages to users who joined. Never texts first.Full inbound + outbound messaging
Inbound accessVerify your phone or whitelist up to 100 user numbersVerify your phone or whitelist up to 100 user numbersNo phone verification required
Build with your agent
FaceTime CLI + messaging APIIncludedIncludedIncluded
Already have a project?

Open your project, then Billing to upgrade to Shared or purchase a Dedicated line.

View paid plans

Prices in USD. Your own agent’s LiveKit, model, and other provider usage is billed separately.

Read the setup guide
FAQ

Everything you
need to know.

Read the docs
Is this real iMessage, or just SMS branded as iMessage?

Real iMessage. Messages flow over Apple’s iMessage protocol with the blue-bubble UX your customers already trust. We fall back to SMS only if a recipient isn’t on iMessage, and we surface that distinction in the API so you always know which channel a message landed on.

How is this different from sending SMS through Twilio?

Twilio is an A2P SMS pipe: carrier-filtered, 10DLC-registered, and visibly automated. Chert delivers a peer-to-peer iMessage thread that opens with the blue bubble, supports read receipts and tapbacks, and lives in the same inbox as a recipient’s family and friends. Open and reply rates are categorically different because the channel is.

What about deliverability and spam flags?

Because iMessage is end-to-end and tied to Apple ID, it doesn’t inherit the carrier-side filtering that hammers A2P SMS. We rotate sending identities, warm them gradually, and cap volume per identity per day to stay well below the heuristics Apple uses to throttle abusive senders. Anyone promising "unlimited blast" volume is one ban away from disappearing.

How do I connect Chert to the tools my team already uses?

We expose a REST API and webhooks for message events, so you can wire conversations into your CRM, sales tools, voice agents, or internal data store with a few hours of work. We also ship native sync for the common cases (lead created, meeting booked, opt-out received). If you’d rather not build, we’ll handle the integration during onboarding.

Want a hand getting started?

Book a 20-minute kickoff. We'll help you connect your agent to iMessage or FaceTime.

Open booking calendar