Works with your assistant

Give your AI assistant a phone number and an email inbox.

Let your assistant call you, text you, and send email. Building an app? Add email and SMS with one API.

Create account See a call in action

One account. Pay for what you use.

Call me and help me choose three tasks for my product launch.

Hail · place_call✓

{
  "to": "+14155550123",
  "system_prompt": "Help Maya choose three tasks for her product launch. Agree on a clear next step for each task.",
  "recipient_consent": true
}

We picked three priorities: finish checkout, test signup, and publish your launch page. Start with checkout today. Then test the full signup flow before you share the page.

Email me the launch plan we just agreed on.

Hail · send_email✓

{
  "to": [
    "maya@example.com"
  ],
  "subject": "Your launch plan",
  "body_text": "Finish checkout today. Test signup tomorrow. Publish your launch page on Friday.",
  "recipient_consent": true
}

I emailed your launch plan to maya@example.com. It includes the three tasks and a date for each one. You can reply to that email when you want to update the plan.

Text me the three launch tasks so I have them on my phone.

Hail · send_sms✓

{
  "to": "+14155550123",
  "body": "Launch checklist: finish checkout today, test signup tomorrow, and publish your launch page on Friday.",
  "recipient_consent": true
}

I sent the checklist to your phone: finish checkout today, test signup tomorrow, and publish on Friday. The text keeps the plan in one place, so you can check it while you work.

01 / See Hail at work

Your agent asks.
Hail makes the call.

See an assistant make a call and bring back the answer.

02 / One platform

Your assistant can reach you.
And hear back.

Calls

Make and receive phone calls. Read the transcript when the call ends.

Explore voice

Texts

Send SMS and receive replies on supported numbers and destinations.

Explore SMS

Email

Send and receive email. Connect your own domain without an add-on fee. Track delivery and opens.

Explore email

03 / Connected conversations

Your agent remembers
the last conversation.

A customer texts your number, then calls. Your agent can see the text and pick up the conversation.

Useful for receptionists and customer follow-ups.

Illustrative receptionist workflow

SMS · customer

Can we move my appointment to Friday?

↓ Same number. Shared history.

Next call · agent

I can see your message about Friday. Let’s talk through your request.

04 / Phone numbers

Find a number
where you need it.

Find local numbers across the US, Europe, and beyond. Compare prices and check requirements before you buy.

Explore call-capable numbers in 116 countries.

United StatesFrom $1.00 / month United KingdomFrom $1.00 / month CanadaFrom $1.00 / month AustraliaFrom $2.00 / month GermanyFrom $1.00 / month FranceFrom $0.50 / month NetherlandsFrom $1.00 / month SwedenFrom $1.00 / month SpainFrom $1.00 / month ItalyFrom $2.00 / month SwitzerlandFrom $1.00 / month IndiaFrom $8.50 / month

Monthly prices for numbers that support calls. Setup fees and requirements vary. Availability is checked when you buy.

Loading current number prices.

Browse countries and current prices

05 / Connect your way

Your assistant.
Or your application.

Choose your assistant and follow the setup guide. Building an app? Use the API to send email and SMS.

Use the Hail API from your code

One API key works for calls, SMS, and email.

curl https://api.hail.so/v1/numbers \
  -H "Authorization: Bearer $HAIL_API_KEY"

This request lists your phone numbers. It sends no message and has no charge.

Get your API key

Create an account, generate a key, then run a request.

Use Hail from your AI assistant

Your assistant makes calls, sends texts, and sends email through Hail.

Connect your assistant

Create an account, then follow the setup guide for your assistant.

$ brew install hail-hq/tap/hail

$ pip install hail-sdk

Start with your first call

Your assistant.
Your phone. Connected.

Create an account, connect your assistant, and add credits when you are ready.

Create account See usage pricing

Get 30% extra credits on eligible top-ups within 24 hours of signup.

Prefer to self-host? Get the source code on GitHub.

Give your AI assistant a phone number and an email inbox.

Your agent asks.Hail makes the call.

Your assistant can reach you.And hear back.