stupid newsletters are bad for business.
Look at this email I got from Plaxo. How many colleagues do you think they can find from YBO Interactive? 
Stupid emails like these make me look for the unsubscribe link (I just did!). If you are sending newsletters to your customers, make sure they won’t feel the same. Treat your customer’s mailbox with respect the same as you treat your customer with respect. If your message is not useful for your customer, don’t send it. And if you do, make sure that there is a very easy way to unsubscribe in one click, something like that:
“This email was sent to xxxxx@example.com. If you believe this message is a mistake and would like to remove your address from our system please click here ”
Don’t make your customers hate you just because of your newsletter. It is not worth it.
