Nylas Alternative

One API.
Any Email Inbox.

Kloudless is the best alternative to Nylas. Unlike Nylas, we do not store all of your users' email data, enabling faster load times and initial email sync, real-time webhook notifications, and increased data privacy. We also offer unlimited user pricing plans to help you scale your business without worry.

Lower pricing, more flexible than Nylas

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Free Dev Plan
  • ccess to all connectors and full API functionality
  • Includes Activity Monitoring and Webhooks
  • Free to use up to 30 accounts
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Pay per User
Starts at $0.20 per Account
  • Unlimited API Requests
  • Admin User access to org-wide calendar data
  • Discounts available for start-ups and non-profits
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Unlimited Plan
$0 per User
  • Self-hosted
  • High performance and scalability
  • Complete data privacy
Fast Email Sync

More email API endpoints and data than Nylas

In addition to the basic features needed for bi-directional sync of email data in real-time. We support all upstream raw query params and filters, as well as all other pass-through type API requests. This allows us to provide a more feature and data complete experience than Nylas.

  • Send new mail and reply to threads
  • Search and retrieve all existing and new mail
  • Access org-wide mailboxes via admin accounts
  • List contacts and co-workers
Real-time notifications

Faster, better, and more reliable than Nylas

Kloudless offers a full-featured Activity Monitoring API with highly reliable webhooks and event bus support across all email providers. We do not store all of your users’ email data like Nylas does, which allows us to offer faster and more reliable load times. Better speed, reliability, and data security make us the best Nylas alternative.

  • Real-time notifications for new emails received
  • Receive webhooks or event bus messages
  • Track org-wide activity via admin accounts
  • Monitor specific mailboxes
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Unified APIs get your integrations to market fast

One data model

Our unified data models ensure that request and response data structures are identical across all the SaaS connectors in a single category.

One set of API endpoints

Our unified API endpoints allow a single API request format to work with all SaaS connectors within a single category.

One authentication flow

We provide a single access token via a Unified OAuth flow, unifying different authentication mechanisms like OAuth, JWT, or password auth.

Tools to help you meet any use case requirement

Core Functionality
Authentication (OAuth 2.0), token management, full CRUD functionality, Search
Events and Webhooks
Live activity monitoring API endpoints give you the ability to track near real-time activity and changes.
Team API
Get admin access to an entire organization’s data, users, and groups with our Team API endpoints and user impersonation capabilities.
Unified Data Models
We unify objects into a single representation for each category of services.
Raw Data
Obtain data in its original format if you need access to unique objects that do not appear in our Unified Data Models.
Pass-through API
Access the full functionality of an upstream API via Kloudless. Kloudless adds default request parameters such as authentication headers.
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Kloudless Enterprise

Run Kloudless on your own server

Host all of our Unified APIs and SaaS integration tools on-premises to ensure the highest levels of security compliance and performance. Kloudless Enterprise is available as a Docker container, AWS AMI, or OVA for deployment on your private infrastructure.

Ready to Get Started?

Talk to an expert or sign up for a free developer account today

Frequently Asked Questions

What are some examples?

Kloudless specializes in helping solve several industry use cases across business applications, such as sales enablement, construction, and CASB. Learn more about other industry use cases and how we can help your application here.

What is the difference between you and Zapier / Workflow Automation?

Kloudless is entirely embedded within your application to increase stickiness. Your users will no longer be forced to leave your application to integrate with the services they need. Workflow automation is not an API. It is simply a tool for your customers to perform basic sync while Kloudless is used by your developers to enable synchronous interactivity for users to pull and push data on demand while using your application. Of course, Kloudless also enables automating data transfer as well. Read all about the differences between a Unified API and workflow automation here.

Do you ever leave data out of the unified response?

Services sometimes return objects with properties that are unique or custom to that specific provider, user account, or tenant. This is especially true of highly customizable environments such as CRM apps like Salesforce. However, Kloudless always provides the raw data returned from upstream HTTP responses, and even allows arbitrary requests to any upstream endpoint through the Kloudless Pass-Through API, while still handling authentication and keeping tokens refreshed.

How do I get started?

Sign up today for a free account and see how easy it is to provide your application with all of its API needs. Use our Postman Collection to easily test out each endpoint, or use our language-specific SDKs to quickly get started on integrating with Kloudless.

What is the benefit of Kloudless being embedded in my application?

Every product has its own UI/UX. Since Kloudless is embeddable, users can access any and all of their needed services inside of your application without ever knowing that Kloudless is there at all, increasing your application’s value, experience, and stickiness.

What are the most popular endpoints?

At a broad level, CRUD endpoints and change tracking are central to applications’ use of Kloudless. Keeping track of real-time events that occur in your end user’s cloud service is pivotal to providing your users with the information they need from your application. Kloudless provides this data through our exceptional Activity Monitoring (Events) API, Webhooks, AWS EventBridge partner source, and first-class support for Subscriptions. Kloudless also builds on top of these basic endpoints to support some of our popular advanced functionality and UI Tools, powering scheduling, file browsing, and data mapping use cases across a range of connectors.

How can we deploy Kloudless?

Your application can connect to Kloudless either through our hosted service at kloudless.com, or by self-hosting Kloudless Docker containers in your cloud or on-premises environments. We offer a range of different options for the size and scale of your application through either method. Learn more about your deployment options here.