No. This is incorrect.
Usually it’s people using “then” when they mean “than” that drives me insane; however, it turns out it’s a two-way street as this email almost caused me to have a rage blackout. (And yes, this is a line from an email written by an EDITOR.)
So for clarification purposes - and with hope that correct usage will one day catch on - I’m putting out these two words and their definition into the great wide world of the internet:
then (adverb): 1. At that time; at the time in question: “I was living in Cairo then”; “by then I was exhausted;” “Adams, the then president.”
2. After that; next; afterward: “she won the first and then the second game.”
than (conjunction): 1. Introducing the second element in a comparison: “he was smaller than his son;” “Jack knows more than I do.”
2. Used in expressions introducing an exception or contrast: “he claims not to own anything other than his home.”
Go forth into the world and compare correctly, people!