The Leading Platform for Calendar & Scheduling APIs

Nylas offers developers enterprise-grade performance, reliability, and security at a fraction of the cost of Cronofy.

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The Best Solution for Calendar Integrations

Nylas offers one modern, RESTful API for every calendar provider in the world. Quickly sync data from users’ calendars and deliver powerful scheduling capabilities directly in your application.  You get bi-directional sync with users’ calendars, full CRUD capabilities with each calendar invite, time saving automation for custom recurring events, and easy scheduling that enables bookings, cancellations, and team-wide visibility into calendars.

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  • Embed a Full-Featured Scheduling Solution in Your App
  • Automate Scheduling Workflows with Instant Booking
  • Route Meeting Requests Based On User Availability
  • Make Managing Rooms & Resources Easy for Your Users
  • Simplify Scheduling with Availability & Time Zone Detection
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Powerful Scheduling Features Not Available Anywhere Else

We give your developers additional features, greater extensibility, and more flexibility at a fraction of the cost of Cronofy. No more paying extra for simple features like Smart Invites and Virtual Calendars.

Cronofy Nylas API


Email API
Calendar API
Contacts API + Graph
Connect to 100% of Providers


Attachment Sync
Label/Folder CRUD
Drafts CRUD
Email Metadata – Starred & Unread
Email Analytics
Threads CRUD


Scheduler UI
Rooms & Resources
Virtual Calendars
Recurring events CRUD
Availability API w/ External Free/Busy
Round robin/advanced scheduling
Instant booking


Contacts CRUD
Contacts Graph


Express Security Review
Data Residency (EU, US, and CA)
SOC 2 Certified
GDPR Compliant
Native Auth

Usability & Customization

Service Accounts
Automatic provider detection
Whitelabeling for all tiers
Detailed insights into webhooks, synced account status

Pricing Plans That Work for Companies of All Sizes

Nylas is the most cost-effective way to integrate calendar data into your application. Whether you’re connecting 300 or 3 million accounts, Nylas gives you the performance you need and the pricing flexibility to scale your app smartly.

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  • Save 200% on your monthly bill once you reach 300 accounts
  • Includes unlimited Smart Invites and Virtual Calendars
  • Get access to our contacts API at no additional cost
  • No contracts required with pay-as-you-go plans
  • Try it free for 14 days – no strings attached
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Go Beyond Calendar: Integrate with Contacts for Free

All developers get free access to the Nylas Contacts API with no additional cost. Leverage rich data from your users’ address books to build powerful scheduling workflows and features like a fully-integrated contacts directory directly in your application.

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Secure Connections That Developers Can Trust

We give you full control over what data is accessed so your customer’s data is always secure, and your product is always compliant. Nylas is SOC 2 Certified, Privacy Shield certified, GDPR compliant, and HIPAA and FINRA ready.

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Express Security Review

The most affordable & fastest process for Google OAuth Security Verification.

Whitelisted IPs

Whitelist IPs across email, calendar, and contacts.

Data Encryption

Data is encrypted in transit and at rest.

Authentication Scopes

Selectively sync the data you need, and nothing more.

Built for Enterprise

Increase velocity with features built for companies at scale.

Worldwide Reach

We have 5 offices across 3 countries.

Global Presence

We have customers in 27 countries.

Development at Scale

We support over 50,000 developers worldwide.

Computing Power

We Process +1.2B API requests & +20TB of data daily.