I got my G-Mail account about a year ago, and I never really used it, but recently I noticed that when I used my Yahoo e-mail address for uploading to YSI, that about half the time I would get a blank e-mail from YSI.
So, I started using my G-mail address, and now I never get a blank e-mail; I always get an E-mail that contains the YSI link, like I'm supposed to.
BTW, Yahoo now offers e-mail accounts with 1 GB storage for free, but if you want, you can pay for 2 GB.
Though I can't see why anyone would actually need 2 GB--1 GB is plenty.
But I think that's why G-Mail isn't as special as it used to be, because Yahoo upped the ante in response to Google offering that much space.