Email sending with SendGrid using WebJobs

Question

I'm trying to integrate SendGrid to a .Net 4.5 application using WebJobs.

I made the basic configurations required to send a basic email. I'm trying to run and test it in my local machine. I can't figure out how to push messages to the queue. I can't upgrade the .Net version of the application as of now. If it is possible to do this without using webjobs that is also fine.

Program.cs

static void Main()
{

    var config = new JobHostConfiguration();
    config.UseTimers();
    config.Queues.MaxDequeueCount = 2;
    config.Queues.MaxPollingInterval = TimeSpan.FromSeconds(4);
    config.Queues.BatchSize = 2;

    if (config.IsDevelopment)
    {
        config.UseDevelopmentSettings();
    }

    config.UseSendGrid();

    var host = new JobHost(config);
    host.RunAndBlock();
}

Functions.cs

public static void ProcessQueueMessage([QueueTrigger("queue")] string message, TextWriter log, [SendGrid(From = "[email protected]", To = "[email protected]")] out Mail mail)
{
    log.WriteLine(message);

    mail = new Mail();

    var personalization = new Personalization();
    personalization.AddBcc(new Email("[email protected]"));

    mail.AddPersonalization(personalization);
    mail.Subject = "Test Email Subject";
    mail.AddContent(new Content("text/html", $"The message '{message}' was successfully processed."));
}

Found the following functions: SendGrid_Test_002.Functions.ProcessQueueMessage ServicePointManager.DefaultConnectionLimit is set to the default value of 2. This can limit the connection throughput to services like Azure Storage. For more information, see https://aka.ms/webjobs-connections. Job host started

I get this on the console.

Thanks in advance :)

Answer 1

I just had to feed the messages into the webjob queue using the following code.

CloudStorageAccount storageAccount = CloudStorageAccount.Parse(CloudConfigurationManager.GetSetting("StorageConnectionString"));

// Create the queue client.
CloudQueueClient queueClient = storageAccount.CreateCloudQueueClient();

// Retrieve a reference to a container.
CloudQueue queue = queueClient.GetQueueReference("email-queue-name");

// Create the queue if it doesn't already exist
queue.CreateIfNotExists();

// Create message to be sent to the queue
CloudQueueMessage message = new CloudQueueMessage(JsonConvert.SerializeObject(new
{
    From = emailContent.From,
    To = emailContent.To,
    Cc = emailContent.Cc,
    Bcc = emailContent.Bcc,
    Subject = emailContent.Subject,
    Message = emailContent.Message
}).ToString());
queue.AddMessage(message);