Think of your business email as though it was on your business letterhead and you’ll never go wrong!
If you cannot respond to an email promptly, at the very least email back confirming your receipt and when the sender can expect your response.
Emailing site owners about your product or service through the site form is still spam. Ask them if they want more info first!
When replying to emails always respond promptly and edit out unnecessary information from the post you are responding to.
Formality is in place as a courtesy and reflects respect. Assume the highest level of formality with new email contacts until the relationship dictates otherwise. Refrain from getting too informal too soon in your email communications.
Never send anyone an email they need to unsubscribe from when they didn’t subscribe in the first place!
Be very careful how you use Reply to All and Cc: in a business environment. Doing so for CYA or to subtlety tattle can backfire and have your viewed as petty or insecure.
When replying to an email with multiple recipients noted in the To: or Cc: fields, remove the addresses of those who your reply does not apply to.
Never send business attachments outside of business hours and confirm that the format in which you can send can be opened by the other side.