but send the voucher prior to your birthday so you could wear said item on your birthday!

that would be fantastic, it would attract more customers to buy regularly

This would be such a cool 'gift' to receive on a birthday - excellent idea!

Would be great and you'd get a lot of customers using it.

This is a great idea for loyal customers

That would be awesome for customers who ordered a certain amount a year

that would be fantastic as I use the website often.

This would be great!! For regular customers .....