When you try to create a bullet list it immediately creates a new line below the text (see "Bullet Point In Line") so you have to copy and paste text to the next line. The line it creates is double-height.

If you start the list in the line above the text ("Bullet Point Above") it creates a bullet in that line, which is above the text so you have to delete to align.

Once you have created a bullet list you cannot remove it using the bullet drop-down. You have to use the outdent function or return twice if you want the next line to not have a bullet. Doing either of these adds a double-height line below the previous bullet. In order to correct this you have to backspace to merge the lines, then press return again.

Thirdly, if you try to convert a bullet list to a number list, or vice versa, it starts the new format in the line below and indented. If you outdent it reverts back to the previous format.

Basically, as soon as you try to create a bullet list the formatting falls apart. Also, when the email arrives the font sizing and format is all over the place.

It is hard to use Airmail as a professional tool when basic formatting is so hard.