| Abstract Email Validation | Validate email addresses for deliverability, syntax, and spam risk detection | apiKey | ✓ | ✓ | |
| apilayer mailboxlayer | Real-time email address validation and verification service | apiKey | ✓ | ? | |
| Cloudmersive Validate | Validate email addresses, phone numbers, VAT numbers, and domain names | apiKey | ✓ | ✓ | |
| Disify | Detect disposable, temporary, and invalid email addresses instantly | No | ✓ | ✓ | |
| DropMail | GraphQL API for generating and managing temporary email inboxes | No | ✓ | ? | |
| EVA | Simple and fast email validation API | No | ✓ | ✓ | |
| Guerrilla Mail | API for creating disposable and temporary email addresses | No | ✓ | ? | |
| ImprovMX | API for custom email forwarding and routing | apiKey | ✓ | ? | |
| Kickbox | Free and reliable email verification API for real-time validation | No | ✓ | ✓ | |
| mail.gw | Temporary email API for creating disposable inboxes (10-minute mail) | No | ✓ | ✓ | |
| mail.tm | API for generating temporary and anonymous email addresses | No | ✓ | ✓ | |
| MailboxValidator | Validate and verify email addresses to improve deliverability | apiKey | ✓ | ? | |
| MailCheck.ai | Detect and block disposable or fake email addresses during signup | No | ✓ | ? | |
| Mailtrap | Safe email testing tool for development and staging environments | apiKey | ✓ | ? | |
| Sendgrid | Cloud-based SMTP and transactional email sending API | apiKey | ✓ | ? | |
| Sendinblue | Marketing and transactional email/SMS API with advanced analytics | apiKey | ✓ | ? | |
| Verifier | API for verifying whether an email address is active and valid | apiKey | ✓ | ✓ | |