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Email APIs — page 2

59 email APIs for sending, receiving and verifying email, best documented first.

Disban

Email

Classify email domains as disposable, free, alias, testing or parked to block fake signups

API key

Kiprio Email Validate

Email

Free email validation: MX check, disposable detection, syntax

API keyCORS

Mailfornet

Email

Disposable inboxes for end-to-end signup tests, with long-polling and HMAC-signed webhooks

API keyCORS

MailRambo

Email

Verify email deliverability with a strict yes/no, disposable and catch-all detection

API key

PostStack

Email

EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics

API key

SMTPfast

Email

Send transactional email, manage contacts and broadcasts, free 3,000 emails/month

API keyCORS

TempMailGrab

Email

Disposable inboxes for email testing with OTP extraction and webhooks

API key

uchecker

Email

Bulk email verification with full SMTP server responses

API key

Xeramail Temp Mail

Email

Temp email address REST API for privacy, testing, automation with OTP extraction

API key

Email Validator by LifeStep

Email

Validate email syntax and MX, detect disposable/role addresses, suggest typo fixes

No authCORS

MailboxValidator Disposable Email Checker

Email

The MailboxValidator Disposable Email Checker API checks if a single email address is from a disposable email provider and returns the results in either JSON or XML format. Refer to https://www.mailboxvalidator.com/api-email-disposable for further information.

No auth1 endpoints

Mailsquad

Email

MailSquad offers an affordable and super easy way to create, send and track delightful emails.

API key8 endpoints

Neutrino API

Email

The general-purpose API

API key27 endpoints

Cloudmersive Validate

Email

Validate email addresses, phone numbers, VAT numbers and domain names

API keyCORS

MailboxValidator Email Validation

Email

The Single Validation API does validation on a single email address and returns all the validation results in either JSON or XML format. Refer to https://www.mailboxvalidator.com for further information.

No auth1 endpoints

Heybounce

Email

Email Verification API

No authCORS

Academic Email API

Email

This API allows you to verify whether an email belongs to a recognized educational institution

API keyCORS

Atomic Mail

Email

Email for AI agents with programmatic inbox creation and send/receive over the open JMAP standard

API key

Emailvalidation

Email

E-Mail address validation

API keyCORS

FreeCustom.Email

Email

Disposable email inboxes with OTP extraction and real-time WebSocket events

API keyCORS

IndiePitcher

Email

Everything email for your startup with markdown support

API keyCORS

MailChannels

Email

Send transactional email over HTTPS with official JavaScript, Python and PHP SDKs

API key

MailValid

Email

Real-time email verification API with SMTP, MX, disposable, role-based, and catch-all detection. Verify single or bulk emails with confidence scoring

API keyCORS

NoParam

Email

Email validation API for real-time & bulk checking

API key

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