Nylas Cloud APIs

Supercharge your app with email & calendar APIs.

Nylas makes it incredibly easy to interface with email, scheduling, and contacts. It’s the modern email messaging platform for enterprise apps.

Built for enterprise products

Velocify Salesloft Pipedrive Infusionsoft Dialpad Lever

2.5 billion mailboxes,
one simple API.

Try a live example in your terminal:

$ curl https://api.nylas.com/messages/ed0djdf1r8224kkz082t9jn62 -X GET -u vVX4pibJbmbhPEomjX7jiXL2PeVsRQ:

Powerful features that work everywhere.


  • Sync mail from any IMAP account
  • Compatible with Exchange ActiveSync 2.5
  • Move messages between IMAP folders
  • Create, rename, and delete folders
  • Change Gmail labels on messages/threads
  • Create, rename, and delete Gmail labels
  • Send mail via SMTP
  • Filter by to, cc, bcc, date, and more.


  • Sync via Google Calendar & Exchange
  • Schedule new events & send invitations
  • Parse incoming event notifications from mail
  • Send RSVPs to event invitations


  • Real-time updates for new messages
  • Trigger on new calendar invites


  • Sync from Google Contacts
  • Sync from Exchange address book
  • Also populated from sent & received mail

All Endpoints

  • RESTful APIs with modern semantics
  • UTF-8 and JSON response bodies
  • Ultra-fast response times vs. IMAP
Gmail Office 365 iCloud Yahoo Exchange Aol