How to create tables in my Outlook messages
Insert tables using built-in tools
1) Go to Insert >Tables
2) Insert the number of columns and rows you need for your data table.
3) Do not merge or split cells.
Use table headers
Specify a header row in a table.
1. Position the cursor anywhere in a table.
2. On the Table Tools Design tab, in the Table Style Options group, select the Header Row check box.
3. Type descriptive column headings.