Not a lot of people use email
Email marketing is one of the most effective marketing methods nowadays simply because virtually almost all people use email. Check on those email fields or blanks required to be filled up on various forms needed in processing different transactions. A person without an email address is tantamount to a person without an online home, which is one big shameful truth for this generation.
Email marketing campaigns can offend a lot of people
The not-so secret way to surmount this dilemma is through permission-based advertising. There's no harm in trying after asking for permission.
It's stupid to send email to all the people
The key to this predicament is to have a very discerning eye on who to email and who to not email. Better look for some metrics on how to know which group of people would give you high ROI or return on investment.
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