What do you think is the best free email service?

In the order of three: Hotmail (now Outlook), Gmail and Yahoo. Hotmail over Gmail, reason is if you don't want to give away your privacy (just like me). Yahoo web mail has just too many bugs and unresponsive, I have full of unpleasant experience with it.

Personally i use Gmail, in my opinion i didn't see yahoo & hotmail as user friendly,

The new experience is fast, easy to use and packed with new features, It is always available wherever we are, from any device - desktop, laptop, phone or tablet.

The number of themes has been increased from 35 to infinity. We can select our own image to use as a custom theme, I love the newly structured "Compose Message" which opens in a new window while our body of gmail stays back as default

We can attach upto 25 mb file size in gmail.....:) my vote is ever and ever to gmail

If you are in love with integration (like me, syncing my data over 5 devices) go for google. If you want a false sense of security, go for outlook. If you want a dead email company, Yahoo is the best!