Even though the Mail app on your Mac has some terrific features for composing emails like adding drawings or inserting and annotating images, it currently lacks the ability to include a table. For formatting an email in a matrix structure, you can still insert a table into a new message. The trick is, you’ll copy that table from another app on your Mac.
While there are probably plenty of apps you can use to do this, the easiest way is with one that’s built right into your Mac. Here’s how to insert tables into emails in the Mail app on Mac.