About SendGrid

SendGrid is a cloud-based email delivery platform by Twilio that provides developers and businesses with transactional and marketing email infrastructure via RESTful API and SMTP relay. Trusted by companies of all sizes, it handles billions of emails monthly with industry-leading deliverability rates.

Pros & Cons

Pros

Industry-leading deliverability (95%+ average delivery rate)
Excellent developer experience with comprehensive API docs and SDKs
Generous free tier suitable for testing and small projects
Built-in spam testing and inbox previews at all tiers
Scales seamlessly from startup to enterprise volumes

Cons

Key Features

Email API with RESTful endpoints and SMTP relay integration

SDKs for 7+ languages (JavaScript, Python, Ruby, PHP, Java, Go, C#)

Transactional email with dynamic templates and personalization

Marketing Campaigns with drag-and-drop and HTML builders

Email validation API to reduce bounces

Spam testing, inbox rendering previews, and link validation

Dedicated IP addresses for high-volume senders

Detailed analytics for delivery, opens, clicks, bounces

Subuser management for multi-brand use cases

Webhook event notifications for real-time tracking

Pricing

Free

$00/month

100 emails/day
APIs and SMTP relay
Delivery optimization
Dynamic templates
Ticket support

Featured In

#5

Best Notification & Messaging Infrastructure for Developers in 2026

SendGrid is the definitive choice for teams whose notification needs center on email deliverability. Pair it with a notification orchestration layer for multi-channel coverage.

#1

Best Email Platforms for Deliverability Consultants (2026)

Best overall for deliverability consultants who need full infrastructure control — dedicated IPs, validation, spam testing, and granular authentication in one platform.