Email APIs
23 free public APIs in this category
| API | Auth | HTTPS | CORS | |
|---|---|---|---|---|
| AGPC Domain Check Check a domain's SPF, DKIM, DMARC and MX with a graded shareable report | No auth | Yes | Yes | ↗ |
| Atomic Mail Email for AI agents: programmatic inbox creation and send/receive over JMAP | API Key | Yes | Unknown | ↗ |
| Cloudmersive Validate Validate email addresses, phone numbers, VAT numbers and domain names | API Key | Yes | Yes | ↗ |
| Disify Validate and detect disposable and temporary email addresses | No auth | Yes | Yes | ↗ |
| DropMail GraphQL API for creating and managing ephemeral e-mail inboxes | No auth | Yes | Unknown | ↗ |
| Email Validation Validate email addresses for deliverability and spam | API Key | Yes | Yes | ↗ |
| EmailJS Send emails directly from client-side JavaScript without a backend server | API Key | Yes | Yes | ↗ |
| EVA Validate email addresses | No auth | Yes | Yes | ↗ |
| Guerrilla Mail Disposable temporary Email addresses | No auth | Yes | Unknown | ↗ |
| ImprovMX API for free email forwarding service | API Key | Yes | Unknown | ↗ |
| Kickbox Email verification API | No auth | Yes | Yes | ↗ |
| Kiprio Email Validate Free email validation: MX check, disposable detection, syntax | API Key | Yes | Yes | ↗ |
| mail.gw 10 Minute Mail | No auth | Yes | Yes | ↗ |
| mail.tm Temporary Email Service | No auth | Yes | Yes | ↗ |
| mailboxlayer Email address validation | API Key | Yes | Unknown | ↗ |
| MailboxValidator Validate email address to improve deliverability | API Key | Yes | Unknown | ↗ |
| MailCheck.ai Prevent users to sign up with temporary email addresses | No auth | Yes | Unknown | ↗ |
| Mailtrap Email API and SMTP for sending transactional and bulk emails, with email testing sandbox for safe development | API Key | Yes | Unknown | ↗ |
| PostStack EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics | API Key | Yes | No | ↗ |
| Sendgrid A cloud-based SMTP provider that allows you to send emails without having to maintain email servers | API Key | Yes | Unknown | ↗ |
| Sendinblue A service that provides solutions relating to marketing and/or transactional email and/or SMS | API Key | Yes | Unknown | ↗ |
| uchecker Bulk email verification with full SMTP server responses | API Key | Yes | Unknown | ↗ |
| Verifier Verifies that a given email is real | API Key | Yes | Yes | ↗ |