I saw this posted as a question a month or so ago. I used to be a HubSpot user. One of the features that I really liked was Snippets. Snippets function exactly like Templates except for a couple of differences:

  1. Though not necessary, you can associate shortcodes with Snippets. So, if I have a blurb that I include in some of my emails about a recent case study, I could write the content that I want to include and then create a shortcode for it (e.g. #casestudy4). When I type "#casestudy4" anywhere in the body of an email, it is replaced with my blurb.
  2. Snippets don't replace the entire email body when you insert them. Rather, the blurb is inserted wherever your cursor was (if you select the Snippet from the Snippets menu) or where the shortcode was (if you used a shortcode).

Otherwise, Snippets work just like Templates. This means that you can also have Fields in Snippets just like you can in Templates.