Email & SMS

Communications

Send transactional emails, SMS notifications, marketing campaigns

Enable your AI agents to communicate directly with users via email and SMS. Send transactional alerts, notifications, and marketing messages with templates, scheduling, and delivery tracking.

Details

Auth Type
API Key (Bearer token)

Rate Limit
10000 emails/hour, 1000 SMS/minute

Pricing
Email: $0.001 per message, SMS: $0.0075 per message

Try It

Step 1: Save your provider key
This is NOT your Callio key. Enter the API key from the provider's dashboard (e.g. OpenAI/SendGrid).

Save Provider Key

Getting Started

1. Try It Instantly
   Click "Try It" above to test the API in the playground

2. Add to Your Agent
   Click "Add to Agent" to get your API key and integrate

Common Use Cases

• Send verification codes
• Transaction notifications
• Alert users to important events
• Schedule bulk campaigns
• Track delivery and engagement

💻 Code Examples

Get started quickly with these code examples in your favorite language

cURL

curl -X GET \
  'https://www.callio.dev/api/proxy/email-sms/forward?target=https%3A%2F%2Fjsonplaceholder.typicode.com%2Fendpoint' \
  -H 'Authorization: Bearer YOUR_CALLIO_KEY' \
  -H 'Content-Type: application/json'

💡 Tip: Replace YOUR_CALLIO_KEY with your actual Callio API key from the dashboard.