Amazing letter

I received a letter from Skype with an invisible voucher. I decided to make a gift to an imaginary friend.



UPD: Good boys and girls still put the voucher in the letter.
UPD2: In the corner of the letter there is a link:
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If you press it, the same letter will open in a new window, but with a code (it didn't work at first).
UPD2.1: If nothing came at all, check your spam folder.
UPD3: $ 1 voucher. Do not deny yourself anything and happy new year!