On a call 02:14
Summary + 2 tasks
AI voice calls.
An agent that calls, confirms, follows up and answers, then hands you a transcript by speaker and the tasks it promised.
One platform
Every way you reach a customer.
Under one set of rules.
Calls, texts and emails usually live in three tools that know nothing about each other. Reach12 sends them from one place, logs every message, checks one opt-out list before anything goes out, and keeps calls and marketing inside the hours a person may be contacted.
Reminder: your visit is tomorrow at 10:00.COHEN · Delivered
Thanks, see you then 👍
SMS, under your name.
Texts go out under your own sender name through one API call, each one logged with its status.
Your receipt
Sent · logged
Email that arrives.
Transactional mail from an address on your own verified domain, with every send recorded.
SMS+972 50 ••• 4567sent
Emaildana@•••.co.ilsent
SMS+972 52 ••• 1180blocked
Emailavi@•••.comfailed
One log for everything.
Every message, its status and why it failed or was held back, in one log you can page through over the API.
allsmsemailcallwhatsapp
+972 52 ••• 1180 asked not to be contacted
One opt-out list.
Someone says stop once, and every channel respects it. Per channel when they want that, or everything at once.
Your technician is on the way 🚐
Great, thanks!
WhatsApp, next.
Each business gets a sender of its own, on the same rules as every other channel.
Call with Dana L.Tue · 10:02
- 10:02:03You approved the call. It dials out.
- 10:02:08First sentence: who it is, and that it's an AI.
- 10:02:41Dana talks over it. It stops and listens.
- 10:04:17Visit booked for Tuesday 10:00. Goodbye, then hang up.
- 10:04:30Transcript by speaker, a summary, and the task to send a reminder.
Hebrew todayDiscloses it's an AI
The voice agent
A voice agent that knows
when to stop talking.
Most voice bots talk over people. Ours manages the conversation itself: it waits for the end of a thought, not just a pause, and gives way the moment the customer speaks.
- 01Turn-taking of its own
- 02Speaks natural Hebrew today
- 03Summary and tasks after every call
- 04Calls only when you say so
Respectful by default
Twelve on the clock.
Never at midnight.
Reach12 knows when a person may be contacted. Calls and messages each keep their own hours, Friday closes early, and Shabbat and holidays stay quiet. Ask the API before you call, and a marketing message sent at the wrong hour is refused with the moment the window opens.
Israel time
--:--
Calls 10:00 to 19:30 · Friday until 13:00 · never on Shabbat or holidays
הסרReply from +972 52 ••• 1180 · "remove me"
SMSblocked
Emailblocked
Callsblocked
WhatsAppblocked
One reply. Every channel respects it. Receipts and codes they asked for still arrive.
For developers
An API you can test
without texting anyone.
Keys that start with sd_test_ run the whole path, validation, caps, opt-outs and hours, and log the message, but never reach a carrier.
- Idempotent sends. Retry with the same key for 24 hours and nothing goes out twice.
- Honest errors.
opted_out,outside_hourswith the next window,daily_cap_reached. - Observable. Request ids and rate-limit headers on every answer.
- Opt-outs over the API. Read, add and lift, per channel.
curl $REACH12_API/v1/sms \
-H "X-Api-Key: sd_test_…" \
-H "Idempotency-Key: reminder-4812" \
-H "Content-Type: application/json" \
-d '{"to":"0501234567",
"text":"Reminder: your visit is tomorrow at 10:00",
"kind":"appointment.reminder"}'
# 200 OK · X-Request-Id: 3f9c2e… · X-RateLimit-Remaining: 59
{ "id": "cm1…", "channel": "sms", "status": "sent", "mode": "test" }curl "$REACH12_API/v1/policy/contact-window?kind=call" \
-H "X-Api-Key: sd_live_…"
# Saturday night in Israel: closed until Sunday 10:00
{ "kind": "call", "allowed": false,
"nextWindow": "2026-11-15T08:00:00.000Z" }# someone replied STOP
curl $REACH12_API/v1/opt-outs \
-H "X-Api-Key: sd_live_…" \
-H "Content-Type: application/json" \
-d '{"address":"0501234567","channel":"sms","reason":"replied STOP"}'
# the next marketing SMS to that number:
{ "error": { "code": "opted_out", "requestId": "7b1d04…" } }0opt-out list for every channel
0test messages that reach a carrier
0hidempotent replay window
0requests a minute, per key
Questions
Good question.
Everything worth knowing before early access.
What is Reach12?
The communications layer for service businesses: an AI voice agent that calls and answers for you, and one API for SMS and email, all under one opt-out list and one set of contact hours.
Which languages does the voice agent speak?
Hebrew, today. We add languages based on what early-access customers need.
Does the agent say it's an AI?
Yes, in its first sentence, on every call. It won't pretend to be a person, and if someone asks, it answers honestly.
Can I try the API without sending real messages?
Yes. Test keys run the whole path, including validation, caps, opt-outs and hours, and log the result, but never reach a carrier.
How do opt-outs work?
One list per account. A person can be removed from one channel or from all of them. Service and marketing messages respect it; a code or a receipt they asked for still goes.
Is WhatsApp supported?
Not yet. It's next, with a sender of its own for each business.
How do I get access?
Write to hello@reach12.com. We onboard early-access accounts one by one and set up your sender name and domain with you.
Be one of the first
to reach12.
Early access is open to a small number of service businesses.
Get early access