SendGrid
by Twilio Inc.
Email delivery API and marketing platform acquired by Twilio, handling billions of emails monthly with high deliverability. SendGrid is an email delivery API and marketing platform originally founded in 2009 and acquired by Twilio in 2019 for $3 billion. As of April 2026, SendGrid processes billions of emails per month for more than 80,000 customers, providing both transactional email delivery (API-driven) and email marketing (campaign builder).
Performance Scores
1 ranking evaluated
Score range: 7.4 – 7.4
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#7Best Email Automation Tools in 2026
Score: 7.4 · Best for: Developer teams and SaaS companies needing high-volume transactional email with API access
Key Facts
| Attribute | Value | As of | Source |
|---|---|---|---|
| Acquisition | Acquired by Twilio in 2019 for $3 billion | Apr 2026 | Twilio SEC filing |
| Customers | 80,000+ customers | Apr 2026 | SendGrid |
| Deliverability | 97%+ deliverability rate | Apr 2026 | SendGrid |
| Free Tier | Free: 100 emails/day | Apr 2026 | SendGrid |
| Essentials Plan | $19.95/month (Essentials, 100K emails/mo) | Apr 2026 | SendGrid |
| Pro Plan | $89.95/month (Pro, 1.5M emails/mo + dedicated IP) | Apr 2026 | SendGrid |
| Templates | Dynamic templates with Handlebars syntax | Apr 2026 | SendGrid |
| Dedicated IP | Dedicated IP addresses on Pro and Premier plans | Apr 2026 | SendGrid |
Strengths
- ●Processes 80+ billion emails per month with high deliverability infrastructure
- ●API-first architecture with SDKs for 7 programming languages
- ●Real-time Event Webhook for custom analytics and delivery monitoring
Limitations
- ●Marketing automation features are less visual than dedicated marketing platforms
- ●Template editor is functional but lacks the polish of Klaviyo or Mailchimp
Based on evaluations in 1 ranking: Best Email Automation Tools in 2026
About SendGrid
SendGrid is an email delivery API and marketing platform originally founded in 2009 and acquired by Twilio in 2019 for $3 billion. As of April 2026, SendGrid processes billions of emails per month for more than 80,000 customers, providing both transactional email delivery (API-driven) and email marketing (campaign builder).
The Email API enables developers to send transactional emails (order confirmations, password resets, notifications) at high volume with a claimed deliverability rate exceeding 97%. The API supports SMTP relay and RESTful HTTP endpoints, dynamic templates with Handlebars syntax, email validation (to reduce bounces), and webhook events for real-time tracking of deliveries, opens, clicks, bounces, and unsubscribes. Dedicated IP addresses are available on Pro and Premier plans for organizations needing full control over sender reputation.
SendGrid offers four plans: Free (100 emails/day, single sender verification, basic APIs), Essentials at $19.95/month (up to 100,000 emails/month, no daily sending limit, ticket support), Pro at $89.95/month (up to 1.5 million emails/month, dedicated IP, sub-user management, email validation, phone support), and Premier at custom pricing (unlimited contacts, priority support, dedicated account manager). Marketing Campaigns (drag-and-drop email builder, contact management, segmentation, A/B testing) are available as an add-on or bundled with higher tiers.
SendGrid integrates with the Twilio platform (combining email with SMS, voice, and WhatsApp), Zapier, Make, Salesforce, Shopify, WordPress, Microsoft Azure, and Google Cloud. The platform provides client libraries for Python, Ruby, Go, Java, Node.js, C#, and PHP.
Integrations (8)
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Email AutomationSee How It Ranks
Best Email Automation Tools in 2026
A ranked list of the best email automation tools in 2026. This ranking evaluates platforms across deliverability, automation depth, template quality, analytics capabilities, and pricing value. The ranking includes transactional email APIs (SendGrid), ecommerce-focused platforms (Klaviyo), creator-oriented tools (ConvertKit), multi-channel marketing suites (Brevo, Customer.io), and the most widely adopted email platform (Mailchimp). Tools with fallback entries use ActiveCampaign where a primary tool slug is unavailable.
Best Marketing Automation Platforms 2026
Our definitive ranking of the best marketing automation platforms for 2026, scored on automation depth, deliverability, pricing value, and integration breadth.
Questions About SendGrid
How do you migrate from SendGrid to Resend in 2026?
A SendGrid-to-Resend migration in 2026 follows five steps: verify domains in Resend, port templates (Resend recommends React Email), swap the API client in code, run dual-send for a verification window, and update DNS to point all sending traffic to Resend. Most production migrations take 1-2 weeks end to end.
What does the Resend free tier include in 2026?
As of May 2026, the Resend free tier includes 3,000 emails/month, 100 emails/day, one verified domain, 30-day email log retention, and basic webhooks. The free tier is intended for development, testing, and very small production sends; teams typically upgrade to the $20/month Pro plan once they exceed 100 emails/day.
What's the difference between Resend, SendGrid, and Postmark?
Resend is a React-template developer-first email API from 2023 with 3,000 free emails/month and $20/month for 50K. SendGrid is the high-scale market leader from 2009 (Twilio) with marketing plus transactional from $19.95/month. Postmark is the deliverability specialist from 2010 (ActiveCampaign) for transactional-only at $15/month for 10K.
What are the best free email automation tools in 2026?
The top free email automation tools in 2026 are Brevo (300 emails/day free, unlimited contacts), Mailchimp (500 contacts, 1,000 sends/month), MailerLite (1,000 contacts, 12,000 emails), HubSpot (2,000 marketing emails/month), and Sender (2,500 contacts, 15,000 emails). Brevo and MailerLite offer the most generous free tiers for small lists with active sending.
Learn More
Resend vs SendGrid vs Postmark 2026: Email API Compared
Resend (2023) is a React-template developer-first email API with 3,000 free emails/month and $20/month for 50K. SendGrid (2009, Twilio) is the high-scale market leader with marketing plus transactional at $19.95/month entry. Postmark (2010, ActiveCampaign) is the deliverability specialist for transactional-only at $15/month for 10K. This 2026 three-way comparison covers DX, deliverability, pricing, and feature breadth.
Email Marketing Automation Strategy Guide 2026
Email marketing automation uses triggered workflows, segmentation, and A/B testing to deliver targeted messages. This guide covers workflow types, deliverability factors, CAN-SPAM/GDPR/CASL compliance, and platform recommendations with ROI data from a 50,000-subscriber deployment.
SendGrid vs Brevo in 2026: Email Automation Compared
A comparison of SendGrid and Brevo for email automation in 2026. Covers API-first vs marketing-first approaches, deliverability, pricing at volume, multi-channel capabilities, and a hybrid deployment case study.