Label Name with Special Characters

Label Name with Special Characters

I have been playing around with a couple of email clients and my Zoho Mail account and interestingly it happened to create a label (aka) virtual folder like this:

$MDNSent

However by default when I create a folder of this type it elicits a breed of this message like:

Label name contains special characters

Now tell me is there a way to edit this folder nomenclature?
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Deepak Vasudevan
http://thamizhththendral.blogspot.com/