Email

MessageBird's API provides SMS, voice, WhatsApp, email, and live chat communications. Send messages globally, build IVR flows, and manage omnichannel customer interactions.

Vonage's Communications APIs provide SMS, voice calls, video, WhatsApp, and verification services. Build global messaging and telephony features into applications.

Mailchimp's Marketing API manages email campaigns, audiences, automations, and reports. Build and send newsletters, segment subscribers, and track engagement metrics.

SendGrid's Email API enables sending transactional and marketing emails at scale. Features include email templates, analytics, bounced email tracking, and inbound email parsing.

Hunter.io API finds and verifies professional email addresses. Search by domain to find contacts, verify email deliverability, and enrich leads for sales and outreach campaigns.

HubSpot's API provides access to CRM contacts, companies, deals, tickets, marketing emails, and automation workflows. Build integrations with HubSpot's all-in-one CRM platform.

Validate and detect disposable and temporary email addresses

GraphQL API for creating and managing ephemeral e-mail inboxes

Email address threat and risk prediction

Disposable temporary Email addresses

Email verification API

10 Minute Mail

Temporary Email Service

Email address validation

Prevent users to sign up with temporary email addresses

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

Flexible, RESTful access to the user's inbox

Validate email address to improve deliverability

Marketing email can be sent and mail templates made in MJML or HTML can be sent using API

Email Finder for B2B sales and email marketing and email verifier

API for domain search, professional email finder, author finder and email verifier

Suite of APIs including email validation, IP geolocation, phone validation, exchange rates and more

Multi-account and fraud detection. Sending emails without ending up in SPAM.

Validate email addresses for deliverability and spam

API for free email forwarding service

Email Service

Disposable Email

Extract postal addresses from any text including emails

Extract postal addresses from any text including emails

AWS Simple Email Service API enables sending transactional and marketing emails at scale with high deliverability. Manage verified identities, sending quotas, and bounce/complaint handling.

AWS Simple Notification Service API enables pub/sub messaging, mobile push notifications, and SMS delivery. Create topics, manage subscriptions, and publish messages at scale.

Resend is an email API built for developers. Send transactional emails with React components, track deliverability, manage domains, and view analytics via a simple REST API.