public static async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = null)] HttpRequest req,
ILogger log)
{
log.LogInformation("SendEmail Function triggered by HTTP request.");
#region ParseRequestBody
log.LogInformation("Parsing body from request.");
string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
dynamic data = JsonConvert.DeserializeObject(requestBody);
string outputString = string.Empty;
JObject outputJson;
string toRecipients = data?.emailRecipients;
string ccRecipients = data?.emailCcRecipients;
string bccRecipients = data?.emailBccRecipients;
string subject = data?.emailSubject;
string message = data?.emailBody;
string passedImportance = data?.emailImportance ?? ""; //Set normal importance if not provided.
#endregion
#region ValidateRequestBody
//Check for minimum mailing values in request body
if (subject == null || message == null)
{
log.LogInformation("Invalid body - Subject/Body.");
outputString = "{ \"EmailSent\": false, \"Details\": \"Email subject or body values missing.\"}";
outputJson = JObject.Parse(outputString);
return(new BadRequestObjectResult(outputJson));
}
if (
(toRecipients == null && ccRecipients == null && bccRecipients == null) ||
(string.IsNullOrEmpty(toRecipients) && string.IsNullOrEmpty(ccRecipients) && string.IsNullOrEmpty(bccRecipients))
)
{
log.LogInformation("Invalid body - To/CC/BCC.");
outputString = "{ \"EmailSent\": false, \"Details\": \"No email recipients provided as To/CC/BCC.\"}";
outputJson = JObject.Parse(outputString);
return(new BadRequestObjectResult(outputJson));
}
#endregion
//Create email client
log.LogInformation("Creating smtp client.");
using (var client = SMTPClient.CreateSMTPClient())
{
#region CreateMail
MailAddress from = new MailAddress(SMTPClient.FromEmail);
MailMessage mail = new MailMessage
{
From = from,
IsBodyHtml = true,
Subject = subject,
Body = message
};
//Set mail importance
if (passedImportance.ToUpper() == "HIGH")
{
mail.Priority = MailPriority.High;
}
else if (passedImportance.ToUpper() == "LOW")
{
mail.Priority = MailPriority.Low;
}
else
{
mail.Priority = MailPriority.Normal;
}
#endregion
#region SetRecipients
//to recipients
if (!string.IsNullOrEmpty(toRecipients))
{
var allRecipients = toRecipients.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries);
foreach (var toAddress in allRecipients)
{
mail.To.Add(toAddress);
}
log.LogInformation("To Recipients Added: " + allRecipients.Count().ToString());
}
else
{
log.LogInformation("To Recipients Added: 0");
}
//cc recipients
if (!string.IsNullOrEmpty(ccRecipients))
{
var allCcRecipients = ccRecipients.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries);
foreach (var ccAddress in allCcRecipients)
{
mail.CC.Add(ccAddress);
}
log.LogInformation("CC Recipients Added: " + allCcRecipients.Count().ToString());
}
else
{
log.LogInformation("CC Recipients Added: 0");
}
//bcc recipients
if (!string.IsNullOrEmpty(bccRecipients))
{
var allBccRecipients = bccRecipients.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries);
foreach (var bccAddress in allBccRecipients)
{
mail.Bcc.Add(bccAddress);
}
log.LogInformation("BCC Recipients Added: " + allBccRecipients.Count().ToString());
}
else
{
log.LogInformation("BCC Recipients Added: 0");
}
#endregion
#region SendEmail
try
{
log.LogInformation("Sending email.");
client.Send(mail);
outputString = "{ \"EmailSent\": true }";
log.LogInformation("Sent email.");
}
catch (SmtpException smtpEx)
{
outputString = "{ \"EmailSent\": false, \"Details\": \"SMTP exception caught and logged to error output.\"}";
log.LogError(smtpEx.Message);
log.LogInformation("Message has not been sent. Check Azure Function Logs for more information.");
}
catch (Exception ex)
{
outputString = "{ \"EmailSent\": false, \"Details\": \"Other exception caught and logged to error output.\"}";
log.LogError(ex.Message);
log.LogInformation("Message has not been sent. Check Azure Function Logs for more information.");
}
#endregion
}
outputJson = JObject.Parse(outputString);
log.LogInformation("SendEmail Function complete.");
return(new OkObjectResult(outputJson));
}
public static async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = null)] HttpRequest req,
ILogger log)
{
log.LogInformation("SendEmail Function triggered by HTTP request.");
#region ParseRequestBody
log.LogInformation("Parsing body from request.");
string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
dynamic data = JsonConvert.DeserializeObject(requestBody);
string outputString = string.Empty;
string recipients = data?.emailRecipients;
string ccRecipients = data?.emailCcRecipients;
string subject = data?.emailSubject;
string message = data?.emailBody;
string passedImportance = data?.emailImportance ?? ""; //Assume normal importance if not provided.
//Check for minimum values in body
if (
recipients == null ||
subject == null ||
message == null
)
{
log.LogInformation("Invalid body.");
return(new BadRequestObjectResult("Invalid request body, value(s) missing."));
}
#endregion
//Create email client
log.LogInformation("Creating smtp client.");
using (var client = SMTPClient.CreateSMTPClient())
{
#region CreateMail
MailAddress from = new MailAddress(SMTPClient.fromEmail);
MailMessage mail = new MailMessage
{
From = from,
IsBodyHtml = true,
Subject = subject,
Body = message
};
//Set mail importance
if (passedImportance.ToUpper() == "HIGH")
{
mail.Priority = MailPriority.High;
}
else if (passedImportance.ToUpper() == "LOW")
{
mail.Priority = MailPriority.Low;
}
else
{
mail.Priority = MailPriority.Normal;
}
#endregion
#region SetRecipients
//recipients
foreach (var address in recipients.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries))
{
mail.To.Add(address);
}
//cc recipients
if (!string.IsNullOrEmpty(ccRecipients))
{
foreach (var ccAddress in ccRecipients.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries))
{
mail.CC.Add(ccAddress);
}
}
#endregion
#region SendEmail
try
{
log.LogInformation("Sending email.");
client.Send(mail);
outputString = "{ \"EmailSent\": true }";
log.LogInformation("Sent email.");
}
catch (SmtpException smtpEx)
{
outputString = "{ \"EmailSent\": false }";
log.LogError(smtpEx.Message);
log.LogInformation("Message has not been sent. Check Azure Function Logs for more information.");
}
catch (Exception ex)
{
outputString = "{ \"EmailSent\": false }";
log.LogError(ex.Message);
log.LogInformation("Message has not been sent. Check Azure Function Logs for more information.");
}
#endregion
}
JObject outputJson = JObject.Parse(outputString);
log.LogInformation("SendEmail Function complete.");
return(new OkObjectResult(outputJson));
}