Todoist allows users to convert emails into Todoist tasks. A unique forwarding address is generated for each project in the user's account. Unfortunately, when I tried adding my unique forwarding address to my Proton account contracts, Proton rejected the address as invalid. I would like Proton to either recognize the forwarding address for what it is or add a new box line, along with TO, CC, and BCC. Let's call it "FA" for a forwarding address; this will allow Proton to recognize ToDoists' forwarding addresses.

FYI, I tried login into the customer feedback page with my Proton account, but it did not recognize my email address, so I had to use my Gmail account instead.