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https://github.com/feinoujc/Mandrill.net

Mailchimp Transactional (Mandrill) api client for .NET
https://github.com/feinoujc/Mandrill.net

c-sharp cross-platform dotnet dotnet-core mailchimp mandrill

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Mailchimp Transactional (Mandrill) api client for .NET

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README

        

# Mandrill.net

Simple, cross-platform Mandrill api wrapper for .NET Core

[![Coverage Status](https://coveralls.io/repos/github/feinoujc/Mandrill.net/badge.svg?branch=main)](https://coveralls.io/github/feinoujc/Mandrill.net?branch=main)

## API Docs

https://mandrillapp.com/api/docs/

## Getting Started

```ps
dotnet add package Mandrill.net

# use Mandrill with HttpClientFactory
dotnet add package Mandrill.net.Extensions.DependencyInjection
```

### Send a new transactional message through Mandrill

```cs
var api = new MandrillApi("YOUR_API_KEY_GOES_HERE");
var message = new MandrillMessage("[email protected]", "[email protected]",
"hello mandrill!", "...how are you?");
var result = await api.Messages.SendAsync(message);
```

### Send a new transactional message through Mandrill using a template

```cs
var api = new MandrillApi("YOUR_API_KEY_GOES_HERE");
var message = new MandrillMessage();
message.FromEmail = "[email protected]";
message.AddTo("[email protected]");
message.ReplyTo = "[email protected]";
//supports merge var content as string
message.AddGlobalMergeVars("invoice_date", DateTime.Now.ToShortDateString());
//or as objects (handlebar templates only)
message.AddRcptMergeVars("[email protected]", "invoice_details", new[]
{
new Dictionary
{
{"sku", "apples"},
{"qty", 4},
{"price", "0.40"}
},
new Dictionary
{
{"sku", "oranges"},
{"qty", 6},
{"price", "0.30"}

}
});

var result = await api.Messages.SendTemplateAsync(message, "customer-invoice");

```

### Service Registration

It is recommended that you do not create an instance of the `MandrillApi` for every request, to effectively pool connections to mandrill, and prevent socket exhaustion in your app. If you are using .net dependency injection, you can use the `Mandrill.net.Extensions.DependencyInjection` package which includes a `IServiceCollection.AddMandrill()` extension method, allowing you to register all the needed interfaces and also customize the [HttpClientFactory](https://docs.microsoft.com/en-us/dotnet/architecture/microservices/implement-resilient-applications/use-httpclientfactory-to-implement-resilient-http-requests) to efficiently manage the HttpClient connections.

```cs
using Microsoft.Extensions.DependencyInjection;
using Mandrill;
using Mandrill.Model;
using Mandrill.Extensions.DependencyInjection;

var services = ConfigureServices(new ServiceCollection()).BuildServiceProvider();
var api = services.GetRequiredService();
// we can also target specific mandrill api endpoint interfaces...
//var messagesApi = services.GetRequiredService();
var message = new MandrillMessage("[email protected]", "[email protected]",
"hello mandrill!", "...how are you?");
var result = await api.Messages.SendAsync(message);

static IServiceCollection ConfigureServices(IServiceCollection services)
{
services.AddMandrill(options =>
{
options.ApiKey = "YOUR_API_KEY_GOES_HERE"; // Load the api key from configuration
});

return services;
}
```

### Processing a web hook batch

```cs
[HttpPost]
[Route("/api/some/route/outbound")]
[Consumes("application/x-www-form-urlencoded")]
public async Task Outbound([FromForm(Name = "mandrill_events")] string body)
{
if (!Request.Headers.TryGetValue("X-Mandrill-Signature", out var signature))
{
return Unauthorized();
}

var events = MandrillMessageEvent.ParseMandrillEvents(body);

// accept an empty test request
if (events.Count == 0)
{
return Accepted();
}

if (!ValidateRequest(body, signature, "WEBHOOK_SECRET_KEY_HERE"))
{
return Forbid();
}

foreach (var messageEvent in events)
{
// do something with the event
}
return Ok();
}

private bool ValidateRequest(string body, string signature, string authKey)
{
var form = new NameValueCollection();
form.Set("mandrill_events", body);
return WebHookSignatureHelper.VerifyWebHookSignature(signature, authKey, new Uri(Request.GetDisplayUrl()), form);
}
```

## Building

```sh
dotnet build
```

## Testing

**You must set the user environment variable MANDRILL_API_KEY in order to run these tests. Go to https://mandrillapp.com/ to obtain an api key.**

**In order for the email from address to match your allowed sending domains, you can set MANDRILL_SENDING_DOMAIN to match your account.**

```sh
# include MANDRILL_API_KEY and MANDRILL_SENDING_DOMAIN in your env. For example:
# MANDRILL_API_KEY=xxxxxxxxx MANDRILL_SENDING_DOMAIN=acme.com dotnet test tests
dotnet test
```

## API coverage

See [this issue](https://github.com/feinoujc/Mandrill.net/issues/1) to track progress of api implementation