Which of these is a good practice to keep in mind when sending emails to your contacts?

Running an A/B test on your subject line is a good practice because it allows you to scientifically determine which subject lines resonate most with your audience, leading to higher open rates and engagement. This data-driven approach optimizes your email campaigns. Sending a generic message to everyone is ineffective because different segments of your audience have varying interests and needs, requiring personalized content for better engagement. Including too much content in the email itself, without encouraging clicks, defeats the purpose of driving traffic to your website or landing pages where conversions typically occur. Emails should be concise and act as a gateway to more detailed information.