Trouble sending JSON data to email service API

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1 
async Task SendEmailComplaints()
{
    var emailServices = SetupEmailServices();
    var httpClient = emailServices.GetRequiredService<IHttpClientFactory>().CreateClient();
    
    AddAuthorizationHeader(httpClient);
    
    var emailDomain = "MyEmailDomain";
    var complaintsData = new[] 
    {
        new { address = "[email protected]", createdat = "" },
        new { address = "[email protected]", createdat = "" }
    };
    
    var jsonContent = new StringContent(
        System.Text.Json.JsonSerializer.Serialize(complaintsData),
        Encoding.UTF8,
        "application/json"
    );
    
    var apiResponse = await httpClient.PostAsync(
        $"https://api.email-service.net/v3/{emailDomain}/complaints",
        jsonContent
    );
    
    var responseText = await apiResponse.Content.ReadAsStringAsync();
    Console.WriteLine(responseText);
}

I’m trying to send a list of email complaints to an API. But I’m getting a 400 Bad Request error. The error message says “Missing mandatory parameter: address”. I think there might be an issue with my JSON data. Can anyone help me figure out what’s wrong?

2

hey mate, i had a similar issue. try changing ur complaintsData to a single object instead of an array. like this:

var complaintsData = new { address = “[email protected]”, createdat = DateTime.UtcNow.ToString(“o”) };

the api might be expecting just one complaint at a time. if that doesnt work, check if theres any other required fields in the api docs.

3

I’ve encountered similar issues when working with email service APIs. From my experience, the problem might be in how you’re structuring your JSON data. The API is likely expecting a specific format, and the current array structure may not match what it’s looking for.

Try wrapping your complaintsData in an object, like this:

var complaintsData = new
{
    complaints = new[]
    {
        new { address = "[email protected]", createdat = DateTime.UtcNow.ToString("o") },
        new { address = "[email protected]", createdat = DateTime.UtcNow.ToString("o") }
    }
};

Also, ensure you’re providing a valid ‘createdat’ value. I’ve included DateTime.UtcNow.ToString(“o”) as an example, but check the API documentation for the exact format they require.

If this doesn’t solve the issue, I’d recommend double-checking the API documentation for any other required fields or specific formatting requirements. Sometimes these APIs can be quite particular about how they receive data.

4

I’ve dealt with this exact problem before. The issue lies in how you’re structuring the request body. Most email service APIs expect a single complaint object, not an array. Try modifying your code like this:

var complaintsData = new {
address = “[email protected]”,
createdat = DateTime.UtcNow.ToString(“yyyy-MM-ddTHH:mm:ssZ”)
};

This should resolve the 400 error. If you need to send multiple complaints, you’ll likely need to make separate API calls for each one. Also, ensure you’re using the correct date format as specified in the API documentation. Some APIs are quite strict about this.

If you’re still encountering issues, double-check the API endpoint URL and your authentication headers. Sometimes these can be the culprit behind mysterious 400 errors.