mailbox.org seems like another EU (Germany) based email startup. Email is a very big hard-to-deal-with issue, however the Dark Mail Technical Alliance and services such as those already mentioned are taking steps to making email more secure.

It is interesting you mention Telegram, i have started using that with contacts of mine who have also adopted it, i'm not totally convinced it is secure, but does seem a better alternative to WhatsApp.

Further to this i've secured the domains i host content on, not because the content needs securing in terms of handling financial data etc, but because i believe that the wider encryption is used the harder it will be to operate global 'catch-all' surveillance.

ref: http://darkmail.info http://mailbox.org https://telegram.org