Eudora Email Client Breaks HTML Links Without Quotes

Broken HTML LinksLooking into an odd problem this morning for a client, I discovered that some email clients are better at handling malformed HTML links than others.

The client had a link in their HTML message that was missing quotes around the URL.

Incorrect:

<a href=http://www.example.com?test=mylink>Read more</a>

Correct:

<a href="http://www.example.com?test=mylink">Read more</a>

Both links worked find when tested in popular webmail clients like Yahoo, Gmail, and Hotmail. Unfortunately less popular email clients like Eudora Mail will break the link.

Technically a link without quotes is improper HTML usage, but most email clients do handle it just fine which can cause the error to go unnoticed.