I'm using Sendgrid and try to sending these emails with C# language. So, what i'm doing is configure the SMTP and API Keys in my apps, and boom, there goes the emails were sent.
The question is, How do I insert the Unsubscribe Preferences group in my X-SMTPAPI header? FYI, unsubscribe preferences is where you can choose which group you want to unsubscribe instead of global unsubscribe.
I already checked these links:
I also checked the library C# on their github. But none of these is made me clear.
I'm completely blind with JSON, GET, REQUEST, RESPONSE and such.
this is my C# code
public void Main()
{
string sSubject = Dts.Variables["vSubject"].Value.ToString();
string sBody = Dts.Variables["vBodyMessage"].Value.ToString();
int iPriority = 2;
if (SendMail(sSubject, sBody, iPriority))
{
Dts.TaskResult = (int)ScriptResults.Success;
}
else
{
//Fails the Task
Dts.TaskResult = (int)ScriptResults.Failure;
}
}
//THIS IS THE HEADER X-SMTPAPI, I DUNNO HOW TO USE IT :(
//I WANNA ADD MY GROUPS HERE
private static string XsmtpapiHeaderAsJson()
{
var header = new Header();
header.SetAsmGroupId(777);
//var uniqueArgs = new string[] { "Small", "Medium", "Large" };
//{
// "asm_groups_to_display": [1, 2, 3]
//};
//header.AddUniqueArgs({ "asm_groups_to_display": ['1', '2', '3']});
//var subs = new List<String> { "私はラーメンが大好き" };
//header.AddSubstitution("%tag%", subs);
//dynamic stuff = json
return header.JsonString();
}
public bool SendMail(string sSubject, string sMessage, int iPriority)
{
string xmstpapiJson = XsmtpapiHeaderAsJson();
try
{
string sEmailServer = Dts.Variables["sServer"].Value.ToString();
string sEmailPort = Dts.Variables["sPort"].Value.ToString();
string sEmailUser = Dts.Variables["sUser"].Value.ToString();
string sEmailPassword = Dts.Variables["sPassword"].Value.ToString();
string sEmailSendTo = Dts.Variables["sSendTo"].Value.ToString();
string sEmailSendToName = Dts.Variables["sSendToName"].Value.ToString();
//string sEmailSendCC = Dts.Variables["sSendCC"].Value.ToString();
string sEmailSendFrom = Dts.Variables["sFrom"].Value.ToString();
string sEmailSendFromName = Dts.Variables["sFromName"].Value.ToString();
SmtpClient smtpClient = new SmtpClient();
MailMessage message = new MailMessage();
MailAddress fromAddress = new MailAddress(sEmailSendFrom, sEmailSendFromName);
//You can have multiple emails separated by ;
string[] sEmailTo = Regex.Split(sEmailSendTo, ";");
//string[] sEmailCC = Regex.Split(sEmailSendCC, ";");
int sEmailServerSMTP = int.Parse(sEmailPort);
smtpClient.Host = sEmailServer;
smtpClient.Port = sEmailServerSMTP;
System.Net.NetworkCredential myCredentials =
new System.Net.NetworkCredential(sEmailUser, sEmailPassword);
smtpClient.Credentials = myCredentials;
message.From = fromAddress;
//MailAddress toAddress = new MailAddress(sEmailSendTo, sEmailSendToName);
//message.To.Add(toAddress);
if (sEmailTo != null)
{
for (int i = 0; i < sEmailTo.Length; ++i)
{
if (sEmailTo[i] != null && sEmailTo[i] != "")
{
MailAddress toAddress = new MailAddress(sEmailTo[i], sEmailSendToName);
message.To.Add(toAddress);
}
}
}
switch (iPriority)
{
case 1:
message.Priority = MailPriority.High;
break;
case 3:
message.Priority = MailPriority.Low;
break;
default:
message.Priority = MailPriority.Normal;
break;
}
//message.Headers.Add("X-SMTPAPI", xmstpapiJson);
//smtpClient.SendCompleted += SendCompletedCallback;
//const string state = "test1";
message.Subject = sSubject;
message.IsBodyHtml = true;
message.Body = sMessage;
//smtpClient.SendAsync(message, state);
smtpClient.Send(message);
return true;
}
catch (Exception ex)
{
return false;
}
}
I see what you mean, the smtpapi-csharp project simply doesn't have that concept implemented.. but it's a trivial matter. (the value of this utility project is questionable to begin with).
Really the only piece of importance here is commented out.
//message.Headers.Add("X-SMTPAPI", xmstpapiJson);
Should be,
message.Headers.Add("X-SMTPAPI", @"{ ""asm_group_id"" : 777, ""asm_groups_to_display"" : [777] }");
Essentially, you're just assigning json to this header. The Documentation provides this sample
{
"asm_groups_to_display": [1, 2, 3]
}
[1, 2, 3] is an array of integers, which correlates to GroupIds.
fork the git and add the following to Header.cs
/// <summary>
/// This sets which groups to display on the Manage Preferences page of an email. You can find further documentation about ASM here:
/// https://sendgrid.com/docs/API_Reference/SMTP_API/suppressions.html
/// </summary>
/// <param name="ids">ASM groups to display applied to the message</param>
public void SetAsmGroupsToDisplay(params int[] ids)
{
_settings.AddArray(new List<string> {"asm_groups_to_display"}, ids);
}
Build and update your csproj reference to use your forked project.
then, call SetAsmGroupsToDisplay like so,
private static string XsmtpapiHeaderAsJson()
{
var header = new Header();
header.SetAsmGroupId(777);
header.SetAsmGroupsToDisplay(777); // SetAsmGroupsToDisplay(new int[] {777}) works too
return header.JsonString();
}
and, of course, use the method:
message.Headers.Add("X-SMTPAPI", XsmtpapiHeaderAsJson());
... don't forgot to add a Pull Request when you get it working.