Why Are External CSS Links Not Recommended for HTML Emails?

External CSS Links in HTML Emails: An Exercise in Futility

When crafting HTML emails, one may wonder if referencing external style sheets is feasible or if embedding CSS is mandatory. Unfortunately, due to severe limitations of HTML mail clients, linking to external style sheets is highly discouraged.

Instead, inline CSS attributes must be painfully applied to each element to ensure some semblance of styling. However, even this technique is fraught with pitfalls, as various clients render styles inconsistently or fail to display them altogether.

HTML email composition is an inherently frustrating task, and the wisest approach is to forgo HTML entirely and resort to plain text messages with links to complete web pages. This way, you can indulge in all the CSS splendor you desire without the torment of HTML email restrictions.

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