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MAil Service

Mail service is a simple email service that accepts the necessary information and sends emails. The front end of the service is implemented using Asp .Net Core + Angular and the back end is developed using Asp .Net Core Web API. A third-party email service API provider known as MailGun is integrated into the back-end to send it deliver emails to the requested recipients. The service also utilises a simple failover mechanism to gracefully fail over to another third-party service (Send Grid) when the primary service provider is unavailable.

Installing

Install .NET Core 2.1 or later

Install your favourite code editor such VS Code or IDE Visual Studio 2017

Prerequisites

Register your acounts on Mail Gun and Send Grid and update the respective values in appsettings.json file in MailService.Api project.

{
  "Logging": {
    "IncludeScopes": false,
    "Debug": {
      "LogLevel": {
        "Default": "Warning"
      }
    },
    "Console": {
      "LogLevel": {
        "Default": "Warning"
      }
    }
  },
  "MailServicesSecrets": {
    "MailGunServiceApiKey": "Enter Your API Key HERE",
    "SendGridServiceApiKey": "Enter Your API Key HERE"
  }
}

Finally update the values in the test fixture classes under the MailService.Api.Tests project.

 public SendGridMailServiceFixture()
        {
            var optionsMock = new Mock<IOptions<MailSecrets>>();
            optionsMock.Setup(o => o.Value).Returns(
                () => new MailSecrets
                          {
                              SendGridServiceApiKey =
                                  ">>Update Your Sed Grid Api Key<<"
                          });

            var config = new MapperConfiguration(cfg => { cfg.AddProfile(new DomainProfile()); });
            var mapper = config.CreateMapper();

            SendGridMailService = new SendGridMailService(optionsMock.Object, mapper);
        }

And update your api key value in MailGunMailServiceFixture

 public MailGunMailServiceFixture()
        {
            var optionsMock = new Mock<IOptions<MailSecrets>>();
            optionsMock.Setup(o => o.Value).Returns(
                () => new MailSecrets { MailGunServiceApiKey = ">>Update your mail gun Api key<<" });

            MailGunMailService = new MailGunMailService(optionsMock.Object);
        }

Running the projects

Right click on the solution and select properties. Under Startup project select "multiple setup projects" and from the list choose MailService.Api and MailService.Consumer and press ok.

Try the project

Run the projects and give it a try. You should be able to see a single page web app designed to compose and send emails.

Authors

  • Pedram Pourashraf

License

This project is licensed under the MIT License - see the LICENSE.md file for details

Acknowledgments

  • AutoMapper
  • FluentAssertions
  • Moq
  • PactNet
  • XUnit