16 Things People Really Hate About Your Email Marketing
Hubspot
JUNE 1, 2012
If CAN-SPAM laws aren't enough to deter you from emailing people who haven't explicitly asked to receive email from you, remember that emailing a cold list will also result in some pretty paltry metrics; since they haven't indicated interest in you, your open and click-through rates will be much poorer than with an opt-in list. Hello Mike!
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