Free Email & Communication APIs

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

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

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

Validate and detect disposable and temporary email addresses

GraphQL API for creating and managing ephemeral e-mail inboxes

Email API for apps and agents: send from a ready @email59.com address with no DNS setup, plus email verification codes, address checks and campaigns

E-Mail address validation

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

Disposable temporary Email addresses

Email Verification API

API for free email forwarding service

Disposable inboxes for end-to-end tests that wait for the email and extract OTP codes and links

Everything email for your startup with markdown support

Email verification API

10 Minute Mail

Temporary Email Service

Validate email address to improve deliverability

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

Prevent users to sign up with temporary email addresses

Email verification for signup forms and lists. Stops spam signups by blocking disposable and invalid emails and suggests typo fixes, with 500 free a month

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

Email validation API for real-time & bulk checking

A seamless messaging platform & API to send all types of SMS

Validate email addresses without sending

Email API for developers

A cloud-based SMTP provider that allows you to send emails without having to maintain email servers

Email API for AI agents: send from your own domain, receive replies as threads, and cap or hold sends for approval per API key

EU-hosted transactional email API and SMTP relay: DKIM on your domain, signed webhooks, delivery events

Self-serve multichannel notification platform for transactional email, SMS, push web& mobile, chat, in-app

Reliable email validation API with Free tier

This API provides temporary & disposable email addresses

Trueguard offers API for detecting temporary emails, free-tier abusers and automated bots

Unlimited e-mail inboxes with API access. Catch OTPs, reset links, and sign-up emails in test flows

Real-time phone validation API for US & Canada: carrier and line type from live carrier data, portability, deliverability, GeoIP and TCPA litigator scrub

Smartphone, tablet, and wearable device specifications

Worldwide Phone Number Lookup & Verification API

Rest Api for Phone specifications

Voice AI agent that phones US businesses for bookings, appointments and quotes, gets through IVR menus and holds, and returns the outcome and transcript

Phone number validation

Whatsapp number validation

US reverse phone lookup: carrier, location and FTC robocall complaint data, no key needed

Phone number validation & carrier lookup