Why aren't you open to DivestOS? 

 One thing is true. Google can disable your account but you can keep all data locally using POP3/IMAP for free. You can use GPG with Gmail with your private keys stored locally. You can encrypt Subject with GPG in your Gmail. Yoy can use your Gmail account with Delta Chat. You can forward your e-mails and so on

Users of ProtonMail can only dream about it.

Thr bottom line is. Gmail is better than most of "privacy and security" oriented providers like Protonmail, Tutanota etc. 

 Yes, maybe I'm dumb. Assuming that I'm dumb you must be a clinical example of imbecile.😏

>Delta chat is retarded
😌





 

 I agree with you. I just wanted to point out that Google is better than Protonmail or Tutanota.  

 If someone has skills a little more than average computer eater and claims that they use Protonmail for more sensitive things then they admit that ...

ProtonMail officially admits that they scan all unencrypted e-mails. 

 No.
If you have only Gmail and Protonmail to choose for sensitive stuff it's better to use Gmail + GPG or just Delta Chat with Gmail.

Let me explain you.
The mentioned solutions give you among others encrypted Subject, attachments (haven't tested with DC yet).
Everything encrypted with your private keys stored locally.

On which basis you're so confident that ProtonMail shares your data only  "unless required" because their marketing team said so? 
 

 I've checked delta chat and attachments. They are encrypted, the name of the attachment isn't revealed.