OK this is strange.
After I read this, I got two emails from BES that the text was gigantic. So I sent myself a test from BES to gmail. That was fine. All is well. More email came through during the evening and all was well there too.
I sent a test from gmail to BES, and again it was pretty large. No html.
Html mail everywhere seems OK. It is txt mail that seems to be big.
Z10 and PlayBook <- 9650<- 9630 <- 8330 <- 8130 <- 8830 <- 8703e <- 7130e <- 7250