I would pay $1000USD to $5000USD for a lifetime account.

I agree that for what it offers, the Premium Version is reasonably priced. And if you use these features and pay for Premium more power to you.
But I'm a student with a limited income and all i want is a private E-Mail provider, that doesnt sell my data or bombard me with Spam.
The only feature i would wish for, that isn't allready included in the Free Plan, is the ability to use Protonmail with Thunderbird.

Having to go to the Website, Login, remember where i left my Phone, open Authy, enter the Code before the Timer runs out... is just a lot of hassle jut to write a short Mail.
I love Protonmail as an idea, but right now I still use my Gmail-Account more than Protonmail.
And 4 Euro/Month, just to use Protonmail with Thunderbird is a steep hurdle for me right now. That's about 1% of my disposable Income at the moment.
I would love if there was a tier between the free version and the premium version, where you could pay 1-2€ for less features than Premium, but with acces to Proton mail Bridge.

Yes please! pCloud offers a lifetime plan.

Using the highest quality product we've received, the consistent/ ongoing improvements, and the plans PM has committed and delivered --> this is a bargain. From a business standpoint, especially for a company developing product(s) in lieu of building on others platforms (Firefox), a SaaS model is vital to ensure security of existence and continuous development.
As a side note, I do not believe in discounts for full & multi-year agreements and would pass the credit card fees to the customer - other services that most use offer lower fees. Easy to say, but I've run a SaaS-based tech company and consult for several; Microsoft and other mature companies are the extortionists. At this point, unless wealthy before this endeavor, it's likely owners (at least) have gone without being paid.

I wouldn't find 4 euros expensive if I lived in an European country, but I live in Peru (south america) and those euros are valued currently at 3.8 times my current currency. So that makes it a bit expensive to consider pay a subscription. And not counting all the taxes that I have to pay with my card in each payment.

It's not sustainable so it's never going to happen.

Allow users to buy Lifetime Accounts offering certain packages, 10T, 15T, 20T, 30T etc.

I agree you need a way for people to pay for resources, but I know that the storage medium for emails is paid for once - the cost of this service monthly is far more than the cost of the hardware to run it.. This is where I will tell you you will make more sales from a one-off cost for life, and that means life for the computer, where upgrades are implicit to be charged for by either new computers being purchased of increasing size for new customers, taking advantage of technological improvement, or my repairs or upgrades to the existing computers.

Yes, way to expensive. Why are so many services screwing its customers by only offering subscriptions, rather than a one off (reasonable) payment.
How much of a push is it that Proton would allow us to have a handful of alias addresses for a one off fee of around $15 or something. It's a massive pain switching accounts, but then the only option after free is a monthly payment which is more expensive that you realise. When pricing these things, sure, a few dollars doesn't sound like much if you consider only that, but what about all the other services we use, it all adds up.

You gotta have an offer of one time payment for an individuals to purchase some functionalities and features for life time and space (GB Price) rather than paying a monthly fees.

I agree , I do not require 1000 messages a day , 5 addresses or a custom domain for 3.29 a month for 2 years. I would like to see a 4th option. Proton Light i would name it. I am a very light user and for myself i would respectfully recommend a light version , of 300 messages a day, 1024gb of storage, 1 address, No custom domain, minimal support, for around 1.50 us a month for 2 years. But not necessary as i stated. 3.29usd a month is still pricey for myself who only rarely receives email. thank you

for 900€, i buy a lifetime service !

Services which offer lifetime accounts are scams. You can’t offer a lifetime subscription while at the same time make money without selling user information.

Proton SHOULD NOT implement lifetime offers into their subscription plan page.

What happens when they offer the CLOUD service? So this cost MORE money?

So far I like protonmail. But I won't sign up for a subscription. I would appreciate a lifetime membership for a fee.

I have a free Protonmail account, and I don't use it. I'm using a competitor—just like you say I should.

Why?

The ability to use a standalone mail client is a strict requirement for me.
Protonmail wants 4.00€ / month for that.
My usage profile is very light. I'd be happy with something like

✔ 500 K(kilo)B storage
✔ Send up to 5 messages per day
✔ Support for pop3/smtp through Protonmail Bridge or whatever
✔ 4.00€ / YEAR

Certainly, I'd be causing much less load on the Protonmail servers than a free user who routinely maxes out their allowance... and Protonmail would get an extra 4€ each year.
Currently, they get nothing.

Anyone using PM’s competitor pricing as justification for this argument - why not just use the competitor? If that works for your budget, why try to force PM to work for you when you’re already aware of an alternative?

And $10/year for the services that Proton Mail offers - first person to show that they can create something similar to Proton Mail, with the exact same security & encryption practices, hosted on their own hardened servers in Switzerland, I’ll gladly pay for 10 years of your service up front.

I cannot agree with this. Anyone who wants to use the features of PM, but not pay for said features, has several other alternatives. Try setting up your own email server using the costs that you are suggesting PM allow. I personally value my security and am in a position to pay $48/year for the Plus Service. I’m glad to know that some of that cost offsets the free users of PM. Just like I’m glad to know that since I’m able to run a Tor bridge, doing so will help someone else in a less fortunate situation (whatever it may be) be able to connect to Tor through my bridge. Not everyone is going to be able to do this - I’m fortunate that I’m able and that others before me provided access when I needed it. I don’t find PM cost structure to be prohibitive in the least. I used a free account at first and once I was confident of the security I upgraded - even though I didn’t really “need” to.

If you can find me a privacy-oriented email provider with servers buried 1000 feet under the Swiss alps for cheaper, I'll switch! :)

I can struggle to get by within the limitations of a free account and Protonmail get nothing.
This is just do-able for me.
or
I could afford perhaps 10 Euro/year for a basic personal account & Protonmail get some cash.
I can't afford 48 Euro, though.

And after this stupid Brexit the price will go up for me, stuck in the UK.