What Is The Recommended Way For Sending Personalized Images In Html Emails?

I know similar questions have already been asked but the answer is almost always the same: you need to share the image on a server and link to it from within the email. For my purp

Solution 1:

The HTML body must refer to the images using the content id (cid): <img src="cid:xyz">, where xyz is the value of the attachment content id (Content-ID) MIME header.

If you are creating the message directly in the MIME format, make sure the attachment is added to the message and its Content-ID MIME header is properly set. If you are Outlook Object Model or MAPI, you must set the PR_ATTACH_CONTENT_ID property on the image.

Solution 2:

Since HTML5 allows base64 encoded images inline, this might be the easiest way to go. Check the following source: http://www.bigfastblog.com/embed-base64-encoded-images-inline-in-html

You should consider that not all mail clients might support HTML5 and therefore attaching the image and referencing it in your code may be the harder but better choice. Unfortunately I have no experience with that.

Edit: This tutorial looks promising, but I have not tried it: http://www.phpeveryday.com/articles/PHP-Email-Using-Embedded-Images-in-HTML-Email-P113.html