Be friendly. Feel free to use a casual tone in your email newsletters. Since most emails come directly from one person, people expect human voices in their inboxes. There's a good chance your subscribers are already in a informal frame of mind when they're checking their email, so an overly formal or stodgy voice might seem out of place. Plus, they've given you their email address, so you're already on a first-name basis. If you collect first names on your signup form, you can dynamically include them in your email greetings.
Technology has a significant impact on consumers’ expectations, and those expectations impact how subscribers engage with your email marketing. Brands need to continually demonstrate that they know their customer, which can make it a challenge to stay on top of the evolving context of marketing. An email strategy can make all the difference between building a relationship with your customers and sinking without trace.