[mark_l_watson]

Thank you, that looks really good. I have had a consulting business for 15 years and several customers have insisted on all email being encrypted, sometimes using Apple's email app with encryption enabled and sometimes just manually using PGP.

For just those customers who cared about protecting their IP, protonmail looks like it would be easier to use, as long as all parties used it.

[dublinben]

Your clients have the right idea, by using only encrypted email to discuss sensitive information. Anything less would be a step backwards.