Knowing what you should be testing.

Accurate testing will show you almos exactly how well
you're going to do with each promotion before you send it.

When you're testing e-mail promotions to determine which approach will
produce the best results, you'll want to be testing a number of things,
including:
Same offer; different subject lines. Test the exact same e-mail
promotion in the exact same format and change only line of each.
Same subject line; different letters. Use the same subject line
And the same format , but alter the body of your letter sligthtly.
This doesn't mean you have to write an entirely new letter; instead,
try tweaking just one section so you can determine which
change makes the difference.
Different opening paragraphs. It's a good i View the rest of this article