You need to Google "adblock plus" my friend.Does it matter? Yahoo itself has gone completely down hill. Made the switch to Gmail late last year and I am not sure why I waited so long.
The majority of users care more about how many stupid ads and clickboxes you throw in their face than they do encryption (mostly because they are uneducated on the matter)
Speaking of ads in my face. I refuse to go to Toms with my phone because of that ridiculous Tmobile (or some crap phone company) add that forces me to scroll it across my entire screen EVERYTIME I go to to a different page on Tomshardware. Sure, everyone needs to make a buck but that add is terrible. I have better luck on porn sites with adds coming at me (no pun intended). Thats pretty sad.
And let's determine how many people actually care to read your email....0. No one cares about your email. So it doesn't matter....unless you are a pedophile or you are using your business as a front for the next deadly super drug...then you better watch out. That's the point. To be able to investigate if someone or some business is suspected of doing some seriously bad stuff.they can encrypt all they want, according to u.s. law signed by serial rapist pot smoker slippery willy pedophile clinton, any company doing business in the united states has to give the government all the keys or full access on demand.
the u.k also has similar laws but mandatory access.
doesn't do any good to encrypt anything when big brother already got the decryptor.
Until it does matter, of course. You'd be shocked by just how much information could be gleaned by mining your e-mails. And technology has advanced to the point where it's feasible to data-mine all e-mail, not just bits with interesting origins or destinations.And let's determine how many people actually care to read your email....0. No one cares about your email. So it doesn't matter.