OutWit.Shared.Email.Provider.Resend 1.0.1

.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 
dotnet add package OutWit.Shared.Email.Provider.Resend --version 1.0.1
                    


                    

                
NuGet\Install-Package OutWit.Shared.Email.Provider.Resend -Version 1.0.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="OutWit.Shared.Email.Provider.Resend" Version="1.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="OutWit.Shared.Email.Provider.Resend" Version="1.0.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="OutWit.Shared.Email.Provider.Resend" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add OutWit.Shared.Email.Provider.Resend --version 1.0.1
                    


                    

                
#r "nuget: OutWit.Shared.Email.Provider.Resend, 1.0.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package OutWit.Shared.Email.Provider.Resend@1.0.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=OutWit.Shared.Email.Provider.Resend&version=1.0.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=OutWit.Shared.Email.Provider.Resend&version=1.0.1
                    


                            Install as a Cake Tool

OutWit.Shared.Email.Provider.Resend

Resend email transport plugin for OutWit hosts. Implements IEmailTransport over the Resend .NET SDK — HTTP API at api.resend.com. This is the default provider used in the WitIdentity release installation.

Configuration

Plugin reads its own appsettings.json from inside the deployed module folder:

{
  "Resend": {
    "ApiToken": "",
    "ApiUrl": "https://api.resend.com"
  }
}
Setting Default Description
ApiToken (required) Resend API key (starts with re_). Should be supplied via env var Resend__ApiToken — keep the JSON value blank.
ApiUrl https://api.resend.com API base URL. Override only to point at a staging endpoint or a self-hosted proxy.

Env-var override convention

Standard .NET configuration binding maps double-underscore env vars to JSON keys:

Resend__ApiToken=re_xxxxxxxxxxxxxxxxxxxxxxxx     # never put this in JSON
Resend__ApiUrl=https://api.resend.com

Installation

dotnet add package OutWit.Shared.Email.Provider.Resend

The plugin's build/.targets auto-copies the module to your output @Email/resend.module/ at build time. The host's WitPluginLoader<IEmailProviderPlugin>(Path.Combine(AppContext.BaseDirectory, "@Email")) discovers it.

Failure classification

Resend SDK exceptions are mapped to neutral EmailFailureKind values so the host's failure tracker / retry policy works the same regardless of provider:

Resend error / HTTP code Kind
MissingApiKey, InvalidApiKey, RestrictedApiKey, InvalidAccess, HTTP 401/403 AuthFailure
RateLimitExceeded, MonthlyQuotaExceeded, DailyQuotaExceeded, HTTP 429 RateLimited (retry with backoff)
InternalServerError, ApplicationError, ConcurrentIdempotentRequests, HTTP 5xx Transient (caller may retry)
HttpRequestException, TaskCanceledException, TimeoutException Transient
ValidationError, InvalidFromAddress, MissingRequiredField, HTTP 422 Permanent
Any other exception Permanent

InvalidRecipient is not produced — Resend lumps bad addresses into the generic ValidationError bucket, so we surface them as Permanent.

License

Apache 2.0 — see LICENSE.txt.

Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

This package has no dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
1.0.1 308 8/9/2026
1.0.0 390 5/13/2026