Back to All APIs
📧

SendGrid

Communications

Send transactional and marketing emails at scale

Enable your AI agents to send emails reliably. Transactional emails, marketing campaigns, templates, delivery tracking, and engagement analytics.

Details

Auth Type
API Key (Bearer token)
Rate Limit
10,000 emails/day
Pricing
Free: 100 emails/day · Pro: from $14.95/mo
Full Docs
Step 1: Save your provider key

This is NOT your Callio key. Enter the API key from the provider's dashboard (e.g. Your SendGrid API key).

API Key (Bearer token)

1. Go to https://app.sendgrid.com/settings/api_keys 2. Create an API key with Mail Send permission 3. Copy the key and save as Provider Key below

Get API Credentials

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 & welcome emails
Transaction notifications
Marketing campaign delivery
Email template management
Delivery and open tracking

💻 Code Examples

Get started quickly with these code examples in your favorite language

curl -X GET \
  'https://callio.app/api/proxy/sendgrid/forward?target=https%3A%2F%2Fapi.sendgrid.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.

Ready to integrate SendGrid?

Test endpoints live or generate your API key and start building in minutes

Browse More APIs