What should be the time frame between sends? At the beginning, you want to ensure that you do not take too long between sends. Your subscribers have just signed up and are enthusiastic about receiving your communication, so take advantage of that enthusiasm.While once daily is too frequent, you can begin by spacing your emails out with only a day in between. After that, extend the time between to three days. As you get to the tail end of your auto responder, meaning that you are getting to the least engaged customers who have not converted and may mark you as spam or opt-out of the email, begin to stretch things out by five days or even a week. Many email marketing service providers will allow you to also mark days of the week that you don't want your auto responder to send, so you may want to eliminate weekend email sends of auto responders. Email open rates are lower on weekends.
If links and looks are set, begin interacting with the page. Abandon it, adjust the window size, convert. Are error messages appearing when they’re supposed to (if, for example, you don’t input all the form’s required info)? Is your CTA button working? If you abandon the page, are you retargeted with ads? When you resize the window, does your landing page respond accordingly?