In answer to your question, this is a multifaceted problem that comes down to: what do I use email for and how else can that work.
I had already mostly switched from email to instant messaging (Facebook, WhatsApp, SMS, Riot.im, etc.). These have some of their own problems but that's a different discussion so the remaining use-cases are:
- open source code mailing lists: Github issues, dependent on adoption but most seem to have moved here
- private company PM emails: many moved to Slack which I detest, or an issue tracker which is not so bad, or other dedicated PM software. There's usually not much individual choice here though unless you're running the company.
- newsletter updates: these typically come from services like MailChimp so using non-Google email to receive these is fine.
- account confirmation: highly dependent on adoption but SMS is becoming an alternative here often
- official correspondences: job applications, etc. There is no alternative. Possibly a space with room for disruption but it would be incredibly challenging.
Generally though, many options sub a federated technology with a lot of user choice (email) for a centralised walled garden. While I'd recommend Riot.im for the messaging part, my main comment here would be that it would be nicer to just have a built-in email client feature or plugin that alterted you in an obvious manner to the service you were communicating with (doing lookups on the To:/Cc:/Bcc: fields before you send. AND a not-just-for-geeks viable alternative to Gmail that could gain ground over time.
Beyond that, if you're looking for a "why", the OP could have elaborated on that alright. Another user, @davewasthere, has explained this well below though.
I wish there were a standard of sorts in im space. It's not signal because it doesn't allow for saving conversations.
As mentioned, there's XMPP.
As well as Signal, there's also Matrix.org which is used by Riot.im.
You could argue there's now too many competing standards (ActivityPub has some similarities in a way too), but without having ever implemented an XMPP client myself, seemingly people had enough issues with it for there to be significant traction given to replacements like Matrix.
Personally I was always a fan of XMPP, and the idea/concept (just not the implementation) of Wave really excited me at the time. Momentum behind XMPP seems to have slowed so I've been giving Riot.im a trial. Sofar I really love it, so I'm once again hopeful.
XMPP? Check out https://conversations.im/ and https://dino.im/
Encrypted, federated and modern.
For business purposes Office 365 is great. It has the full power of Exchange under the hood. (I was recently able to setup forwarding only email addresses to external email addresses, without needing new licenses or setting up mailboxes.)
[0] - https://blog.fastmail.com/2016/12/12/why-we-contribute/
The unique link solution is a tricky one, transmitting the credentials is a chicken egg problem. Something like keybase.io is designed to solve this kind of problem but of course not everyone uses PGP and they never will. It will remain a tricky problem.
the outrage with facebook? the ability to read your mail keeps gmail free.
Because Google is a major presence on the internet...
This question doesn’t really make a lot of sense. What are you trying to achieve?
For anonymizing identity and metadata, I use Tor. Which I access via nested VPN chains, just in case. To secure content, I use GnuPG. That is, Thunderbird with Enigmail and TorBirdy. I've found both vfemail.net and cock.li to be decent no-bullshit providers, and both have Tor onion mail servers.
Sure, some of your correspondents may use Gmail. But there won't be anything useful for Google to see.
I'd like to have a webmail address that does GNUPG on it, but the average user does not use encryption.
Also I dislike having to give out my cell phone to verify because I get junk calls when they sell my info.
It looks like you can run the server on your own hardware, but I have not tried this so YMMV. https://github.com/lavabit/magma
I much prefer to pay for a product than be the product.
Read their webpage before brushing off. Underrated.