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SendGrid API

by Twilio SendGrid Free tier

SendGrid delivers 100 billion emails per year for businesses like Airbnb, Uber, and Spotify. Send transactional emails from code, design marketing campaigns with drag-and-drop templates, set up automated drip sequences, parse inbound email, and track open and click rates.

emailtemplatesmarketingtrackingwebhooks

Quick Reference

Base URL https://api.sendgrid.com/v3 Auth type Bearer Token Auth header Authorization: Bearer SG... Rate limit 600 requests/min Pricing Pay per use Free quota $15 free trial credit Documentation https://docs.sendgrid.com Endpoint status Server online — HTTP 401 — server is online but path returned an error (may require auth)875ms (checked Mar 29, 2026) Builder score B 65% builder-friendly
Pricing
75
Latency
38
Depth
78

Authentication

Pass your SendGrid API key as a Bearer token in the Authorization header.

Authorization: Bearer SG...

Pricing

Model pay-as-you-go Starting price Pay per use Free quota $15 free trial credit Unit cost $0.0000 per 100 emails (free: 100/day)
PlanPrice/moIncluded
Free Trial Free $15 credit, PAYG after

Free: 100 emails/day. Essentials: $19.95/mo (50k emails). Pro: $89.95/mo (100k emails). Overage ~$0.00133/email on Essentials.

Key Endpoints

MethodPathDescription
POST /mail/send Send a transactional email
POST /marketing/campaigns Create a marketing campaign
GET /stats Get email performance statistics
POST /templates Create a dynamic email template
GET /suppression/bounces Get list of bounced emails

Sample Request

curl -X POST https://api.sendgrid.com/v3/mail/send \
  -H "Authorization: Bearer $SENDGRID_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "personalizations": [{"to": [{"email": "user@example.com"}]}],
    "from": {"email": "sender@yourdomain.com"},
    "subject": "Welcome!",
    "content": [{"type": "text/plain", "value": "Thanks for signing up."}]
  }'

Sample Response

HTTP 202 Accepted
# No body returned on success
# Check X-Message-Id header:
X-Message-Id: 5aH6dM1sT2KABZvhJ-wr0A

Data sourced from API Map. Always verify pricing and rate limits against the official Twilio SendGrid documentation.