Reinterface API
Domains & DNS · Email Forwarding · Domain Health · Mailboxes (Gmail, Outlook, IMAP/SMTP) · Calendars
Base URL: https://api.reinterface.com/api/v1. Last updated: 2026-08-08.
One REST API and one key for your domain infrastructure: host DNS on managed nameservers, create forwarding addresses, and monitor domain health. The same key drives mailbox connectivity — connect Gmail, Outlook, or any IMAP/SMTP account, then your app always calls the same /send and /fetch regardless of provider.
DNS API
Connect your domains to Reinterface nameservers and manage their DNS records with your personal API key.
Email Forwarding API
Create addresses on your domains that forward to any inbox: hello@ aliases and catch-alls over REST.
Domain Health API
One call that checks delegation, web reachability, mail routing, and SPF/DMARC posture live against public DNS.
Email Connectors API
Unified IMAP/SMTP, Outlook, and Google API — connect, send, and fetch email across three providers.
Gmail API
Send and read Gmail on a connected Google account with your personal API key.
Calendar API
List, create, and delete Google Calendar events with your personal API key.
Authentication
Send your API key server-side in the x-api-key header. One key across the DNS, Email, and Calendar APIs.
Changelog
Release notes and documentation updates.