Freemium
Mailgun
Email API for sending, receiving and tracking transactional mail
Email and MessagingEmail API for developers
Alternatives to Telnyx
12 tools like Telnyx, chosen by what they do. About Telnyx
Freemium
Loops
Email platform for SaaS teams, from campaigns to transactional mail
Email and MessagingEmail for SaaS companies
Open source
React Email
Unstyled React components for building email templates
Email and MessagingBuild emails with React
Freemium
Mailtrap
Email API, SMTP and test sandbox for developer and product teams
Email and MessagingEmail testing and sending
Free trial
SendGrid
Email API and marketing campaign tools, now part of Twilio
Email and MessagingEmail delivery at scale
Freemium
Nylas
API for email, calendar and meeting data across providers
Email and MessagingEmail and calendar APIs
Free trial
Freemium
Open source
Centrifugo
Self-hosted server for realtime messages and live updates
Realtime and VideoScalable realtime messaging
Freemium
IPinfo
IP address data API for location, network and privacy details
Search and MapsIP geolocation data
Open source
Appwrite
Open source backend with auth, databases, storage and functions
Backend as a ServiceOpen backend
Free trial
Postmark
Transactional email delivery service with an API, SMTP and templates
Email SendingReliable transactional email