net10.0net8.0net9.0
An Aspire component leveraging Papercut SMTP container.
Published
May 14, 2026
5mo ago
Total Downloads
64.6K
64,583
Install
dotnet add package CommunityToolkit.Aspire.Hosting.PapercutSmtp --version 13.3.0
| Product | Versions |
|---|---|
| .NET |
README
CommunityToolkit.Hosting.PapercutStmp
Overview
This Aspire Integration runs Papercut SMTP in a container.
Usage
The Papercut SMTP integration exposes a connection string with the format endpoint=smtp://<host>:<port>.
This connection string can be used to with a DbConnectionStringBuilder to get the smtp endpoint.
Example 1: Add Papercut SMTP with generated ports
var builder = DistributedApplication.CreateBuilder(args);
var papercut = builder.AddPapercutSmtp("papercut");
var xyz = builder.AddProject<Xyz>("application")
.WithReference(papercut)
.WaitFor(papercut);
builder.Build().Run();
Example 2: Add Papercut SMTP with user-defined ports
var builder = DistributedApplication.CreateBuilder(args);
var papercut = builder.AddPapercutSmtp("papercut", 80, 25);
var xyz = builder.AddProject<Xyz>("application")
.WithReference(papercut)
.WaitFor(papercut);
builder.Build().Run();
Example 3: Get URI from connection-string using DbConnectionStringBuilder
string? papercutConnectionString = builder.Configuration.GetConnectionString("papercut");
DbConnectionStringBuilder connectionBuilder = new()
{
ConnectionString = papercutConnectionString
};
Uri endpoint = new(connectionBuilder["Endpoint"].ToString()!, UriKind.Absolute);
builder.Services.AddScoped(_ => new SmtpClient(endpoint.Host, endpoint.Port));
Changes from Previous Version
No structural changes between v13.2.1-beta.604 and v13.3.0.
Adoption Assessment
A verified publisher signal is available. Assess fit from the package's supported frameworks, license and dependency graph rather than popularity alone.
Compatibility metadata lists 3 target frameworks; confirm the exact target used by your application.
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