“Saying one thing and delivering something else, or being vague with your description is a bad habit to get into — and you’ll suffer greatly as the spam complaints come pouring in.”
Make your email intentions very obvious from the beginning. Clearly state what your emails will entail, as well as how often subscribers will receive them. For example, will you be sending daily tips or a bi-weekly newsletter? Prepare your subscribers so emails don’t end up in the spam folder.