Transactional Email API Service For Developers
APIFree plan available
- Send emails
- Optimize emails
- Validate emails
Best SendGrid Alternatives in 2026
8 similar tools you can use instead of SendGrid, with pricing and key features.
SendGrid
SendGrid Email API and Email Marketing Campaigns
- Email API & SMTP
- Email campaigns
- Deliverability tooling
- Scale & reliability
SendGrid alternatives
Self-hosted Resend alternative
Developer toolsFrom $149 / one-time paymentSelf-hosted
- Campaigns
- Sequences
- Transactional API
Open-Source Transactional Email Platform
APIFree plan availableOpen SourceSelf-hosted
- Inbound Email
- Workflows
- Segments
Email infrastructure for platforms
APIFrom $0.50 / GB-month
- Sending API & SDKs
- Inbound/outbound mail & webhooks
- Cluster provisioning & inbox management
The email delivery service that people actually like
APIFree plan available
- Fast Delivery
- Deliverability & Inbox Placement
- Developer-Friendly API
Email for developers
APIFree plan available
- Modular Webhooks
- Test Mode
- Editor
Communications APIs with AI and data for SMS, Voice, Email
APIFree plan available
- Messaging
- Voice
A complete email platform for Developers to Send, Receive & Reply
APIFrom $3.50/domain/mo / monthly
- Transactional Email Sending
- Threaded Email Reception
- AI Agent Integration for Email
Frequently Asked Questions
What is SendGrid?
SendGrid is an API tool: SendGrid Email API and Email Marketing Campaigns. Key features include Email API & SMTP, Email campaigns, Deliverability tooling and Scale & reliability.
Are there free alternatives to SendGrid?
Yes. Mailgun, Plunk, Postmark, Resend and Twilio have a free plan.
Is there an open-source alternative to SendGrid?
Yes. Plunk is open source.