Jacek Marchewka
Founder of Sunsetless
I have written C# and .NET software for a living since 2013, most recently leading .NET development on enterprise systems in the UK. With Sunsetless I move .NET applications off EWS before Exchange Online switches it off, by rewriting their code for Microsoft Graph or by switching them to our library.
- writing C# and .NET for a living
- Since 2013
- organizations use the UK payroll platform where I am a lead .NET developer
- 250+
- .NET product teams work to the backend standards my team sets
- 18
- EWS scenarios compared with live Exchange Online
- 202
Working with us
- Who you talk to
- Me. What you send through the contact form, the chat or [email protected] comes to me, and you get an answer within one business day.
- The business
- Sunsetless is operated by Jacek Marchewka One, a business registered in Poland, in the European Union. VAT ID: PL5130235098. Business ID (REGON): 122869485.
- Your code
- When we work on your application, we keep its code and everything you tell us about it confidential, use them only for that work and delete our copy of the code after you accept the change. We sign your NDA if you want one.
- Your mailboxes
- Sunsetless EWS runs inside your application and calls Microsoft Graph with your own app registration. Your mail never passes through us, and the library sends us nothing.
How we can work together
We move your application off EWS
We rewrite its EWS code for Microsoft Graph, or switch it to Sunsetless EWS, for a fixed price after a free check. Prices start at $1,000.
How the service worksYou switch it yourself to Sunsetless EWS
Swap the NuGet package and keep your EWS code. A free trial key runs the library in your tenant for 14 days.
Try it freeWe move it from .NET Framework to current .NET
We check your projects for free, agree a fixed price by email and move them one project at a time.
.NET Framework migrationTell us about your application
Write to us about the application and the mailboxes it uses. We reply by email within one business day.