The most important part of your email is going to be the subject line. Startups, especially founders, are usually buried in email clutter. Due to this, your subject line needs to be appealing for them to open your emails. It’s not something that is ALL CAPS or has a bunch of exclamation marks! It’s a subject line that that person cares about.
via How to get a startup job or internship with a cold email « FullStart.
