You sure can! It's super easy to post by email, and you can even add text formatting and inline images. Just format the email content like normal, select the recipient email address, and hit send. The post will be published just like any regular post on Honey.
How do you find the recipient address? It's located in your Tools, which is is accessible by clicking the dropdown arrow at the top of your left hand navigation menu and selecting "Tools" from the dropdown menu. From there, you'll see a whole list of email addresses that correspond to a particular group. Select the group you'd like to post to, and fire off the email to that email address. Easy!