But what's your reliable and dependable address?
The truth is, there's no way I want to have just one address. Here's what I use:
1) A very personal address that very few people have, but for close friends and family. I wouldn't even tell you what service I use, let alone accidentally give it out in a public place. I'm super protective of it, it's one that does do notifications on my iPhone, etc., and remarkably is still spam free. To be honest, I even have some family members that don't use it. I told them I was changing my email address and gave them a different one, since they can't stop sending joke chain emails with 200 people in the CC list.
2) A somewhat personal address that I give out to business contacts that aren't work-related (I use my corporate email account for those obviously). Pretty much spam free. It's the one that largely gets the Linkedin invites, the Plaxo spam, etc, but largely hasn't been sold off to spammers.
3) An address I use for websites that I reasonably trust. Amazon. Slashdot. Things that you sign up for once, and then have to opt out of whatever stupid newsletters you get by default. Rarely gets spam.
4) An address I use for websites I reasonably don't trust. Something where I want some content on a site but don't want them to have a way to contact me. Not loaded on a phone or computer, if I need to look for an account activation email, I hit web mail, wade through the incessant spam, find what I need, log back out.
5) Work email. Not much I can do about that. Loaded on my work computer, and on my work provided phone. Gets too much email. Very little spam though, since I use address #3 or #4 when signing up for web sites, even if they are work related.
That said, while it was a little work setting up, it's very easy to manage. Email #1 is checked constantly. #2 and #5 regularly. #3 occasionally, and most stuff is automatically filtered away (Amazon order receipts into a folder, etc). #4 is very popular with viagra sites and porno sites, since it's the address captured by sites that turn around and sell your email.
Amazon isn't likely to sell your email, they'd rather have you all to yourself.
There's other things you can do. If you use Apple products, they make it very easy to hook your phone number and every email address you own (iCloud or otherwise) to iMessage. But you don't have to. If you have multiple addresses, make sure just the private ones are hooked up to iMessage. For SMS, I have my cell published sparingly, most people get my Google Voice number, and those texts are reviewed less frequently.
But, email is broken. For sure. That's a lot of work just because I don't want to buy sugar pills labeled as Viagra from unknown sources and am comfortable in my manhood enough to not need to try to change anything geometrically.