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SendGrid
Email delivery platform by Twilio — 100 billion emails per month, 100 free emails/day, SMTP and API.
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About SendGrid
SendGrid is the email delivery platform owned by Twilio, sending 100 billion emails per month for companies including Airbnb, Spotify, and Uber. It provides both SMTP relay and a REST API for transactional and marketing email.
SendGrid vs modern alternatives: SendGrid has a developer experience of 6/10 with legacy SDK and 22-minute setup time. Resend scores 9/10 with TypeScript-first approach and 4-minute setup. Postmark scores 8/10 with 11-minute setup. Sendgrid achieves 90-93% Gmail inbox rate vs Resend''s 97.2% and Postmark''s 97.3%. At 100K emails/month, SendGrid costs $89.95, Resend costs $75, Postmark costs $74.
When to use SendGrid: already using Twilio for SMS (single vendor simplification), needing marketing + transactional in one platform, needing the largest possible scale, or having an existing SendGrid integration that works.
When to use Resend instead: new project with TypeScript/Next.js, want fastest setup, don''t need marketing email features.
Deliverability concern: SendGrid''s 90-93% Gmail inbox placement is lower than Resend (97.2%) and Postmark (97.3%) in benchmark testing.
Key Features
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SMTP relay: send email from any application by changing SMTP credentials
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REST API: HTTP API for programmatic email sending in any language
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Email validation: real-time address validation to reduce bounces and protect reputation
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Marketing campaigns: template editor, list management, and send scheduling
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Event webhooks: delivered, opened, clicked, bounced, and unsubscribed events via HTTPS
Pros
- ✓100 billion emails per month — the most battle-tested email infrastructure available
- ✓SMTP relay: works with any language or platform without code changes
- ✓Email validation API: validate addresses before sending to maintain list quality
- ✓Marketing + transactional: run both types of email from one SendGrid account
- ✓Twilio integration: same account for email, SMS, and phone communications
Cons
- ✗90-93% Gmail inbox rate is lower than Resend (97.2%) and Postmark (97.3%)
- ✗22-minute setup vs Resend''s 4 minutes — verification and sender identity process is complex
- ✗Support quality has declined since Twilio acquisition — response times can be slow
Who is using SendGrid?
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Twilio customers who want email under the same account and invoice as SMS and phone
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Enterprise teams who need the absolute largest email infrastructure at scale
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Companies who need both marketing email campaigns and transactional email in one platform
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Teams with existing SendGrid integrations that are working — no reason to migrate
Use Cases
- →Sending transactional emails via SMTP relay from a legacy PHP application without code changes
- →Running email marketing campaigns alongside transactional emails from one platform
- →Using the email validation API to clean a list before a large campaign send
- →Integrating SendGrid and Twilio SMS for multi-channel notification sequences
Pricing
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Free : $0/mo — 100 emails/day, 1 API key, Community support
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Essentials : $19.95/mo — 50K emails/mo, All features, Priority support
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Pro : $89.95/mo — 100K emails/mo, Dedicated IP, Phone support
Pricing details may not be up to date. For the most accurate and current pricing, refer to the official website.
What Makes SendGrid Unique?
The email delivery platform sending 100 billion emails per month — the largest email infrastructure available, with SMTP relay for any language and Twilio integration for multi-channel communications.
How We Rated It
Email volume from Twilio/SendGrid published statistics. Deliverability benchmark from third-party inbox placement test March 2025. Setup time measured from account creation to first successful send.
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Accuracy and Reliability 4.2/5
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Ease of Use 4.1/5
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Functionality and Features 4.3/5
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Performance and Speed 4.4/5
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Customer Support 3.9/5
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Value for Money 4.1/5
AI summary
Email delivery platform by Twilio — 100 billion emails per month, 100 free emails/day, SMTP and API.