If the subject line of the email is irrelevant to customers, they will ignore it multiple times. But, if it keeps repeating, they are intercepted and unsubscribed from your emails. So, send relevant emails for the benefit of the customer. Don't send emails that often only focus on sales, offers and discounts.
‘똘똘한 한채’ 겨냥한 李…“투기용 1주택자, 매각이 낫게 만들것”
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self.file.flush()，这一点在91视频中也有详细论述