Voice · tutorial
Make your first AI phone call with a voice API
Place a call with Hail's voice API, give the agent a narrow task, and inspect the call status before deciding what happens next.
Hail / engineering
Build the conversation. Handle what happens next.
Practical notes on phone calls, email, and the details between an API request and a useful result.
Email · tutorial
Send an email with an API, then check what happened
Send a plain-text email with Hail, inspect the response, and follow delivery and bounce events without sending the message twice.
Email · guide
DMARC policies explained: none, quarantine, and reject
Understand DMARC alignment, choose a policy for your domain, and check your DNS without mistaking authentication for inbox placement.
Setting up a sender?
Read about US 10DLC registration and email domain warmup, or explore the voice API.