The proyect consists of an Azure function that is triggered by an http request to send an email using MailKit client library

This can be useful if you want to send an email in response to a webhook setup on another system. Most of the samples available on GitHub that send email with Azure functions use the SendGrid library. This library and service is great if you plan to send a lot of emails. But if you just need occasional emails, the MailKit client library should be more than enough. BTW, I think the MailKit library is awesome.

If you want to test the function locally in Visual Studio, please setup your local.settings.json this way:

{
	"IsEncrypted": false,
	"Values": {
		"AzureWebJobsStorage": "UseDevelopmentStorage=true",
		"FUNCTIONS_WORKER_RUNTIME": "dotnet",
		"EmailHost": "{YOUR-SMTP-HOST}",
		"EmailPort": "{YOUR-SMTP-PORT}",
		"EmailUser": "{YOUR-USER}",
		"EmailPassword": "{YOUR-PASSWORD}",
		"EmailFromEmail": "{YOUR-FROM-EMAIL}",
		"EmailFromName": "{YOUR-FROM-NAME}",
		"EmailHostUsesLocalCertificate": "false"
	}
}

The function parses the http request body to populate the class called: "EmailToSend". This class has 4 properties: "To", "Subject", "PlainBody" and "HtmlBody". Currently, the JSON to populate this class should be:

{
	"To": "{TO-EMAIL-ADDRESS}",
	"Subject": "{SUBJECT-OF-THE-EMAIL}",
	"PlainBody": "{BODY-OF-THE-EMAIL-IN-PLAIN-TEXT}",
	"HtmlBody": "{BODY-OF-THE-EMAIL-IN-HTML}"
}

However, depending on the webhook that you use, you should modify the "EmailToSend" class to adapt it to the JSON that you receive.

• If the "To" email is not provided, the function will use the same email as the "From"
• You may provide more than one email address for recipients by separating them with a semicolon (;)
• When deploying the function to Azure, make sure to configure all the "Email..." parameters in the application settings
• If you require more security for your email credentials, you may choose to use the Key Vault service instead

I hope this helps! ;)