Receiving BCC email addresses

[Minisaints]

Hello,

I've noticed that I am receiving BCC emails but they have no recipients. The "WebHook.InboundEmail" class doesn't provide a field for this either? How can I pickup the email from a BCC?

Thanks.

[Jericho]

BCC is not a documented parameter (see here), that's why it's not present in StrongGrid's model class for inbound email.

But if you could provide the payload that you receive from SendGrid, I'll be happy to model it in StrongGrid.

[Minisaints]

Ah okay that's great. I do believe that it exists in the email headers.

I sent an email from Outlook as "[email protected]" to "[email protected]" but only put "[email protected]" as a BCC and left CC/To empty. "[email protected]" receives the email but StrongGrid returns the "To" field as "[email protected]".

After looking into the email headers through StrongGrid, I can see "From:[email protected]" (shown below) which I'm presuming StrongGrid defaults to if no To/CC exists?

@From=John <[email protected]>@Subject=BCCTEST-SUBJECT

A bit further up in the headers though, SendGrid does send across the actual BCC email which is "[email protected]" shown below.

(Postfix) with ESMTPS id 8E2A45C1810 for <[email protected]>

Hope that makes sense.

[Jericho]

What would help would be the actual payload that you receive from SendGrid.

[Jericho]

In case it's helpful: this is how I save the payload to a text file when I need to review the data posted by SendGrid

private static async Task SaveRequest(HttpRequest request)
{
    const string destinationFolder = @"C:\Temp\";

    try
    {
        // Check if file(s) already exist
        var previousPayloadFiles = Directory.EnumerateFiles(destinationFolder, $"SendGridInboundPayload*.txt").ToArray();

        // Read the payload
        await using var body = new MemoryStream();
        await request.Body.CopyToAsync(body).ConfigureAwait(false);
        body.Position = 0;

        using var reader = new StreamReader(body);
        var postedData = await reader.ReadToEndAsync().ConfigureAwait(false);

        // Save to a file
        var newFileName = Path.Combine(destinationFolder, $"SendGridInboundPayload{(previousPayloadFiles.Length + 1):00}.txt");
        await File.WriteAllTextAsync(newFileName, postedData).ConfigureAwait(false);
    }
    catch (Exception e)
    {
        Debug.WriteLine(e.Message);
    }
}

This will allow you to provide the content of the text file

[Jericho]

@Minisaints if you still want me to research the possibility of adding BCC, I need you to provide the information I requested.

[Minisaints]

Hello, apologises for my absence, had a recent unpleasant experience with COVID. I would still like to research this possibility and I'll try get that information over as soon as possible.

Thanks.

[Jericho]

I have done some preliminary testing and, as far as I can tell, the data sent by SendGrid does not include a section called "BCC" or something like that. But there's a section called "Envelope" which contains a property called "to" which seems to contain the email address that was BCC'd. This might be the info you are looking for.

I'm still curious to take a look at the data sent to you by SendGrid to verify if they provide you with more info than what my testing has revealed.

[Jericho]

@Minisaints are you still interested in researching this situation? Have you looked at the content of the Envelope.To property like I previously mentioned? Also, are you able to capture the data posted to you by SendGrid using the helper code I provided?