Email Services
Email address verification, disposable inboxes, and newsletter APIs
Email Services API Comparison Overview
Top Endpoints| API Service | Auth Type | Rate Limit | Security | Direct Link |
|---|---|---|---|---|
| SendGrid | Free Key | 100 e-posta/gün | HTTPS • CORS | Docs |
| Mailgun | Free Key | 5000 e-posta/ay | HTTPS • CORS | Docs |
| Mailchimp | Free Key | 500 abone/ay | HTTPS • CORS | Docs |
| Amazon SES | Free Key | 200 e-posta/gün | HTTPS • CORS | Docs |
| Postmark | Free Key | 100 e-posta/ay | HTTPS • CORS | Docs |
| Resend | Free Key | 100 e-posta/gün | HTTPS • CORS | Docs |
Available Endpoints (11)
SendGrid
Cloud-based email delivery service, marketing campaigns, and transactional APIs
Mailgun
Transactional email API for sending, receiving, and tracking inbound emails
Mailchimp
Email marketing campaigns, audience lists, and automation workflows
Amazon SES
Amazon Simple Email Service: scalable, cost-effective outbound email delivery
Postmark
Lightning-fast transactional email delivery with high inbox placement rates
Resend
Modern developer-first transactional email API with React Email component support
EmailJS
Send transactional emails directly from client-side JavaScript without backend servers
Hunter
Find verified professional business email addresses by company domain
Disify
Detects disposable, temporary, and spam domain email addresses instantly
Gmail API
Send, receive, search, and manage Gmail messages and inbox threads
About Free Email Services APIs
This directory curates 11 verified public APIs in the Email Services domain. Developers can build dashboards, mobile applications, automation bots, and microservices with these ready-to-integrate endpoints without upfront billing.
🔑 Do I need an API key?
Several APIs listed here operate as Zero-Auth services where you can execute queries directly. Others provide free developer tiers with an instant key upon registration.
⚡ Does FreeAPI support CORS?
Yes, all endpoints can be called through FreeAPI Smart Edge Gateway to bypass browser CORS headers and inspect live responses.