Now that you have more understanding of business email etiquette, here are some additional tips for the workplace.
Write business emails in black legible font. Most defaults in emails work best. Emails with crazy fonts, large texts, and distracting colors take away professionalism. Also, do not use all caps. This gives a loud, angry impression. Even if you want to stress certain points, do so using your diction rather than formatting.
When responding to an email, try to respond within 24 hours or 48 at most. Once emails surpass the 24 hour period, they tend to be forgotten. By organizing emails in appropriate folders, you can remember to respond to them as well. Also, be wary about jokes; it is easy for humor to be misunderstood via email.
It is also important that the content of your email is safe to be shared. You never know what is being monitored at work anyway, so if the information could potentially get anyone in trouble, it should not be sent in an email. Furthermore, only hit reply all if the message applies to everyone.