Basic foreground images can be inserted into an email document just like they are for web pages:

<img src="http://www.yourserver.com/email/images/logo.png">

And they can be made links by wrapping them in an <a href> tag:

<a href="http://www.yourwebsite.com">
    <img src="http://www.yourserver.com/email/images/logo.png">
</a>

Email <img>s use many of the same attributes as on the web, including some that are deprecated on the web, are included at the bottom of this page under Parameters.

---

✖ don't use relative image paths:

<img src="images/logo.gif">

✖ It's advisable not to use base64. It's not supported in Outlook and can quick bloat the file size of an email, which triggers spam filters.

<img src="data:image/png;base64,iVBOR..." alt="Your Image">