Email APIs
Powerful email APIs for validation, verification, temporary email services, and transactional messaging. Build robust email functionality into your applications with these reliable services.Available APIs
| API | Description | Auth | HTTPS | CORS |
|---|---|---|---|---|
| apilayer mailboxlayer | Email address validation | apiKey | Yes | Unknown |
| Email Validation | Validate email addresses for deliverability and spam | apiKey | Yes | Yes |
| Cloudmersive Validate | Validate email addresses, phone numbers, VAT numbers and domain names | apiKey | Yes | Yes |
| Disify | Validate and detect disposable and temporary email addresses | No | Yes | Yes |
| DropMail | GraphQL API for creating and managing ephemeral e-mail inboxes | No | Yes | Unknown |
| EVA | Validate email addresses | No | Yes | Yes |
| Guerrilla Mail | Disposable temporary Email addresses | No | Yes | Unknown |
| ImprovMX | API for free email forwarding service | apiKey | Yes | Unknown |
| Kickbox | Email verification API | No | Yes | Yes |
| mail.gw | 10 Minute Mail | No | Yes | Yes |
| mail.tm | Temporary Email Service | No | Yes | Yes |
| MailboxValidator | Validate email address to improve deliverability | apiKey | Yes | Unknown |
| MailCheck.ai | Prevent users to sign up with temporary email addresses | No | Yes | Unknown |
| Mailtrap | A service for the safe testing of emails sent from the development and staging environments | apiKey | Yes | Unknown |
| Sendgrid | A cloud-based SMTP provider that allows you to send emails without having to maintain email servers | apiKey | Yes | Unknown |
| Sendinblue | A service that provides solutions relating to marketing and/or transactional email and/or SMS | apiKey | Yes | Unknown |
| Verifier | Verifies that a given email is real | apiKey | Yes | Yes |
API Categories
Email Validation
Verify email addresses are valid and deliverable before sending
Temporary Email
Create disposable email addresses for testing and privacy
Email Sending
Send transactional and marketing emails at scale
Email Forwarding
Forward emails from custom domains to your inbox
Common Use Cases
Email Validation
Prevent fake signups and improve deliverability by validating email addresses before adding them to your database:- Check syntax and format
- Verify domain exists and has valid MX records
- Detect disposable/temporary email providers
- Reduce bounce rates
Transactional Email
Send reliable transactional emails for:- User registration confirmations
- Password resets
- Order confirmations
- Shipping notifications
- Account alerts
Testing & Development
Use temporary email services to:- Test email functionality without spam
- Create test accounts
- Verify email flows in staging environments
Best Practices
Authentication
Most email APIs require authentication:- API Key: Most common method - include in headers or query parameters
- No Auth: Some validation and temporary email services are freely accessible
Rate Limits
Be aware that many email APIs have rate limits:- Free tiers typically allow 100-1,000 requests per month
- Paid plans offer higher limits and additional features
- Implement caching to reduce API calls
- Queue emails during high-volume periods