From Zero to Hero: Sending Email with .NET

Learn everything you need to know to send production-grade emails in .NET

About This Course

The world runs on email. Book a train ticket? Get an email. Buy something online? Get an order confirmation email. Forgotten your password? No problem - we�ll send you an email. But for developers, working with email can be a chaotic mix of incompatible clients, devices and standards. Dylan Beattie has been building applications that send mail since the 1990s; software that he�s designed and built has sent over a billion emails. In this course, Dylan will teach you everything you need to know to build, send and test email applications using .NET - from the underlying standards that control how internet email works, to libraries and packages like MailKit and MJML, to the architectural patterns you can use to send thousands of emails without slowing down the rest of your system.

Course Curriculum

9h 42m 8 sections

Welcome

01:20 Free preview

What will you learn in this course?

02:09 Free preview

Who is the course for and prerequisites

01:47 Free preview

SmtpClient, MailKit and MimeKit

05:16

What's an SMTP Server - and why do we need one

03:00

Exploring SMTP with MailPit and telnet

05:57

Sending Mail with MailKit and MailPit

03:16

Multipart Messages with MimeKit BodyBuilder

01:47

Attachments and Inline Images

04:02

Introduction

01:03

Scenario and Data Model

01:30

Building Emails with StringBuilder

20:51

StringBuilding HTML and Field Replacement

04:17

Templating Engines Overview

05:34

Comparing Razor Engines

11:08

Razor.Templating.Core - Implementing IFileInfo and IFileProvider

15:27

Templating HTML with Fluid

24:10

Templating HTML with RazorEngine-NetCore

10:09

Templating HTML with Razor Components

18:01

Sending Test Mail with Mailpit

07:49

Introducing Mailtrap

10:02

HTML Email - What's The Problem

04:08

Introducing MJML

15:20

Running MJML with .NET

21:18

Templating with MJML

23:49

Introducing Rockaway

06:58

Rendering Real World Emails

19:18

Dynamic PDFs with QuestPDF

23:39

Creating Data-Driven PDFs

15:57

Sending Real Emails with MailKit

26:59

Testing Email Services - Overview

06:19

Testing Email Services - Deep Dive

41:33

Review and Recap

01:13

Email Delivery Considerations

01:32

Email Address Validation

03:38

Choosing an SMTP Server

05:04

Email Domain Validation

04:20

DNS for Email - SPF, DKIM and DMARC

18:32

Sending Our First REAL Email

09:09

Sending Mail Asynchronously with Channels and BackgroundServices

25:40

Reusing the SMTP Connection

23:17

Parallel Sending with BackgroundServices and SignalR

58:15

Distributed Email with EasyNetQ - Overview and Architecture

06:00

Distributed Email with EasyNetQ - Preparation and Refactoring

10:47

Distributed Email with EasyNetQ - Implementation

40:56

Conclusion

08:47

Course Details

Level From Zero to Hero

Duration

Rating

$159.99

Lifetime access

Go Pro for Full Access

Get unlimited access to all Dometrain courses with a Pro subscription

Learn more about Dometrain Pro

Meet Your Instructor

Dylan Beattie

Dylan Beattie

Dylan Beattie is a consultant, software developer and international keynote speaker. He’s been building data-driven web applications since the 1990s; he’s managed teams, taught workshops, and worked on everything from tiny standalone websites to complex distributed systems. He’s a Microsoft MVP, and he regularly speaks at conferences and user groups all over the world.

Dylan is the creator of the Rockstar programming language, the director of Ursatile, and the founder of The Linebreakers, the world’s greatest tech comedy party rock band. He’s online at dylanbeattie.net and on Bluesky as @dylanbeatt.ie.

View all courses by Dylan Beattie

© 2026 Dometrain. All rights reserved.