The Leading Platform for Email, Calendar, and Contacts

One connection for every provider in the world.


Integrate Once. Connect to Every Provider.

We remove the complexity of building and managing direct integrations.

  • Modern, RESTful APIs make integrating quick and easy.
  • Bi-directional sync with inboxes, calendars, and address books.
  • Full CRUD (create, read, update, delete) capabilities.

Lexicata saved 12 months of engineering hours with Nylas. Learn How »

Nylas API Diagram
Nylas API Security

Security You Can Trust. Control When You Need It.

We help you by processing your data safely and securely, but you always have full control.

  • Data is encrypted in transit and at rest.
  • Full access control and gated permission checks.
  • Token management, selective sync, and more.

Nylas protects and secures your data. Learn How »

Reliability. Scalability. Elite Performance.

We handle ongoing maintenance for you so you can focus on other things.

  • 99.9% guaranteed uptime, backed by industry-leading support SLAs.
  • Low latency sync and billions of API requests handled per week.
  • Smart API versioning makes for smooth updates every time.

Nylas delivers a scalable API architecture. Learn How »

Nylas API Reliability

How It Works

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Universal APIs for Email, Calendar, and Contacts

Universal Email API

A single point of integration that connects your application to every email service provider in the world.

With just a few lines of code, you can build a secure, reliable connection to your users’ inboxes. Get full, bi-directional sync with Gmail,, Microsoft Exchange, Office 365, IMAP and all the rest in minutes.

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Universal Calendar API

Connect to every calendar provider, including Google Calendar, and Office 365, and Microsoft Exchange. We even give you calendar support for IMAP via autogenerated calendar events.

Quickly build embedded calendar features, get recurring events support from every provider, create events from email, and more.

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Universal Contacts API

Get full contacts sync with your users’ address books. Unlock auto-complete for contact information such as email address, phone number, job title, and profile photo.

Our platform is certified in the latest security standards like SOC 2 Certification and GDPR compliance, so you can focus on building the features your users will love.

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Ready to Start Building?