Choose your Umbraco-version
Install-Package NewsletterStudio NewsletterStudio -Version 3.0.18
dotnet add package NewsletterStudio --version 10.0.17
dotnet add package NewsletterStudio --version 13.0.10
dotnet add package NewsletterStudio --version 14.0.2
dotnet add package NewsletterStudio --version 15.0.2