Welcome to SendPulse Community. I use SendPulse to send thousands of daily email to my opt-in lists via my proprietary CRM. And encourage everyone to consider the 7 C's when communicating with their clients:
Clean, Clear, Concise, Compelling, Creative, Connecting, Copy
The goal for each email is to appear as though you personally wrote this message just for them; to use the power of your CRM in unique ways to never let them see behind the curtain, to ever consider that it was automated.
This is a topic I'm always happy to discuss.