I fully agree. I'm very glad that the facility to compose plain text mails was finally added, but the option to force plain text rendering for received mails, even if they were originally sent as HTML, is also very important. Ideally, this should be the default mode.

HTML messages are a security risk and I have no wish to receive them. This is even more important given the recent PGP-related vulnerability.

https://www.eff.org/deeplinks/2018/05/attention-pgp-users-new-vulnerabilities-require-you-take-action-now

Please consider adding this feature. I believe it's vital for a service that aims at privacy/security. Thank you.

I am active user of another privacy mail provider and it also has a plaintext feature for sending AND reading.

+1 for plain text, it's a must!

Plain text aids security. For example, it helps protect from malicious links.

Please add option to process all email data using html2text. It shouldn't be too difficult to implement.

-> You might click on links, load images, execute javascript or some other code accidentally.

i certainly would like this. One might accidentally click on link it's hmtl.