Litmus Instant API
The Litmus Instant API provides REST endpoints for generating email preview screenshots across 40+ email clients by submitting HTML directly without needing to send an actual email. It is used by email editors and ESP integrations to deliver real-time rendering previews within their own platforms.
Documentation
Documentation
https://docs.litmus.com/instant
Authentication
https://docs.litmus.com/oauth-integration-guide
Specifications
OpenAPI
#Email Clients
#Email Testing
#Previews
#REST API