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Sunsetless EWS Logo

Run existing EWS Managed API code on Microsoft Graph

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Sunsetless EWS - 2026 Pricing, Features, Reviews & Alternatives

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Last updated: October 2026

Sunsetless EWS overview

What is Sunsetless EWS?

Sunsetless EWS lets .NET applications built on Microsoft's EWS Managed API keep working with Exchange Online after EWS is switched off. The library replaces the Microsoft.Exchange.WebServices NuGet package and keeps the same namespace, types and methods, so existing code compiles unchanged and its calls go to Microsoft Graph.

It runs inside your application and uses your own Entra app registration, so mail goes straight between your app and Microsoft 365. Mailboxes still on Exchange Server on premises keep using EWS through the same code. Each supported operation is compared field by field with recorded EWS responses, and the compatibility page lists the differences. Works on .NET Framework and modern .NET.

Starting price

899flat rate

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Sunsetless EWS reviews

Overall rating

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No reviews

Rating breakdown
  • Value for money
  • Ease of use
  • Features
  • Customer support
  • Likelihood to recommend0/10
Rating distribution

5

4

3

2

1

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0

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Sunsetless EWS's key features

Most critical features, based on insights from Sunsetless EWS users:

AS2 capability
Data transformation
Multiple format support

All Sunsetless EWS features

AS2 capability
Data transformation
Multiple format support

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Sunsetless EWS pricing

Pricing plans

Pricing details:

Free plan
Free trial
Subscription

Single App

899

One-time payment

Features included:

  • One application that uses EWS, in your own Microsoft 365 tenant
  • Existing EWS Managed API code runs on Microsoft Graph
  • Calls to Exchange Server keep using EWS
  • License never expires, all future versions included

Organization

2,390

One-time payment

Features included:

  • Every application in your Microsoft 365 tenant
  • Existing EWS Managed API code runs on Microsoft Graph
  • Calls to Exchange Server keep using EWS
  • License never expires, all future versions included

ISV

3,590

One-time payment

Features included:

  • A product you ship to customers, in any number of their tenants
  • One license key for all customers, customers buy nothing
  • Existing EWS Managed API code runs on Microsoft Graph
  • Calls to Exchange Server keep using EWS
  • License never expires, all future versions included

User opinions about Sunsetless EWS price and value

Value for money rating:

Sunsetless EWS support options

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Platforms supported

Web
Android
iPhone/iPad

Support options

Email/Help Desk
FAQs/Forum
Knowledge Base
Chat

Training options

Documentation
Live Online

Sunsetless EWS FAQs

Q. Who are the typical users of Sunsetless EWS?

Sunsetless EWS has the following typical customers:
Freelancers

These products have better value for money


Q. What level of support does Sunsetless EWS offer?

Sunsetless EWS offers the following support options:
Email/Help Desk, FAQs/Forum, Knowledge Base, Chat

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