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The mailto syntax; A comma may not work in Outlook Web Access

The mailto syntax is pretty simple, but sometimes you might run into problems with some mail clients (AKA Outlook Web Access). Most of them are very forgiving and you can drop a comma for example right into the body of the mailto and have no problems, but it’s better not to do that. It’s much safer if you use hexadecimal numeric values for your special characters. For example a comma is %2c and a space is %20.

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