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HTML emails

More and more emails are composed using HTML, the language for web pages. Beside formatting this allows for a number of unwanted effects.

Please read our notes on side effects of these test mails.

Content Security Policy halts XSS in its tracks

Cross-site scripting (XSS) is one of the biggest problems faced by webmasters. The new Content Security Policy standard should finally provide some relief more »
Skype's ominous link checking: Facts and speculation

Our associate's discovery that URLs sent through Skype are then visited by Microsoft has caused quite a stir. A little more information has now emerged and leads to even more questions more »
Password protection for everyone

Those who heed well-intentioned recommendations and use a separate password for every service either require a photographic memory or the right techniques to keep the multitude of passwords under control more »
Two clicks for more privacy

"Like" buttons for Facebook, Google+ and Twitter present a privacy problem. A 2-click concept developed by heise online addresses this problem more »