HTML: 1-pixel table border without CSS

I had to create a table with 1-pixel black border without CSS because I generated markup for an e-mail and most of Mail clients break all CSS when you push "Reply".

I tried border="1", but it didn't work because the border was in relief. Then I tried style but it didn't work too, because it left only outer border without any lines between cells. Making a border for each cell also didn't work because border between 2 cells was 2-pixel length.

Finally, I found a solution:
<TABLE cellSpacing="1" cellPadding="0" border="0" bgcolor="#000000">
<TR bgcolor="FFFFFF">
...

The idea is 1-pixel spacing between white cells and black background of the table that looks like border. You just set bgcolor of the table to color of your border you want to see and then set bgcolor of all rows to the color of outer background (so they seem to be transparent).