How to Spot a Bad Email List and Turn It Into a Good One
Hubspot
MAY 29, 2014
If you don’t regularly clean your email lists to ensure everyone you email has a valid email address and actually wants to receive your stuff, here’s what you can expect to happen: People will ignore, delete, or mark your emails as spam. Secondly, people really don’t like being spammed. It has steroidal growth.
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