How to Set Up HTML/Email Templates with ASP.NET

Can I set up HTML/Email Templates with ASP.NET?

There's a ton of answers already here, but I stumbled upon a great article about how to use Razor with email templating. Razor was pushed with ASP.NET MVC 3, but MVC is not required to use Razor. This is pretty slick processing of doing email templates

As the article identifies, "The best thing of Razor is that unlike its predecessor(webforms) it is not tied with the web environment, we can easily host it outside the web and use it as template engine for various purpose. "

Generating HTML emails with RazorEngine - Part 01 - Introduction

Leveraging Razor Templates Outside of ASP.NET: They’re Not Just for HTML Anymore!

Smarter email templates in ASP.NET with RazorEngine

Similar Stackoverflow QA

Templating using new RazorEngine API

Using Razor without MVC

Is it possible to use Razor View Engine outside asp.net

Creating Email Template in ASP.NET MVC

The better way to send HTML formatted Email your code will be in "ConfirmAccount.htm"

<!doctype html>     
<html lang="tr">
<head>
 <meta charset="utf-8">
 </head>     
 <body>
   <p>Dear [Firstname]  [Surname],</p>
   <p>Kindly Confirm your Email by clicking the link below</p>
   <p>[Code]</p>
 </body>

Read HTML file Using System.IO.File.ReadAllText. get all HTML code in string variable.

string Body = System.IO.File.ReadAllText(HttpContext.Current.Server.MapPath("EmailTemplates/ConfirmAccount.htm"));

Replace a Particular string with your custom value.

Body = Body.Replace("[Firstname]", user.Firstname);

Call SendEmail(string Body) Function and do a procedure to send an email.
Replace the Session email and Configuration app settings with your ones.

public static void SendEmail(string Body)
        {
            MailMessage message = new MailMessage();
            message.From = new MailAddress(Session["Email"].Tostring());
            message.To.Add(ConfigurationSettings.AppSettings["RequesEmail"].ToString());
            message.Subject = "Request from " + SessionFactory.CurrentCompany.CompanyName + " to add a new supplier";
            message.IsBodyHtml = true;
            message.Body = Body;

            SmtpClient smtpClient = new SmtpClient();
            smtpClient.UseDefaultCredentials = true;

            smtpClient.Host = ConfigurationSettings.AppSettings["SMTP"].ToString();
            smtpClient.Port = Convert.ToInt32(ConfigurationSettings.AppSettings["PORT"].ToString());
            smtpClient.EnableSsl = true;
            smtpClient.Credentials = new System.Net.NetworkCredential(ConfigurationSettings.AppSettings["USERNAME"].ToString(), ConfigurationSettings.AppSettings["PASSWORD"].ToString());
            smtpClient.Send(message);
        }

You can check out in message.IsBodyHtml = true SendEmailAsyn Method

How can i add html email template for email confirmation in asp.net mvc5 identity 2?

We can store the html tag in a variable and then pass that variable to the method UserManager.SendEmailAsync() method.

string message = "<h3>Your Email Tempalte</h3>";
await UserManager.SendEmailAsync(user.Id, "Confirm your account", message);

For more details please check this link: http://forums.asp.net/t/2026812.aspx?How+can+i+add+html+email+template+UI+for+email+confirmation+in+asp+net+mvc5+identity+2+

HTML templates could not be found in Production (NET Core 3.1)

As per asp.net core 3.1 static files are accessible via a path relative to the web root. So any files outside of the wwwroot cannot be accessed in production. In that case you have to move your EmailTemplate folder inside the wwwroot as you can see the picture below:

Sample Image

And then in Startup.Configure you have to add reference of this
middleware app.UseStaticFiles(); while you would browse the directory you have to modify code like this way
Note: In that case your path would be like
wwwroot/EmailTemplate/EmailTemplate.html and your code should be like
: private const string templatePath = @"wwwroot/EmailTemplate/{0}.html";

Hope above steps guided you accordingly.

How to Set Up HTML/Email Templates with ASP.NET

Can I set up HTML/Email Templates with ASP.NET?

Creating Email Template in ASP.NET MVC

How can i add html email template for email confirmation in asp.net mvc5 identity 2?

HTML templates could not be found in Production (NET Core 3.1)

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