The extract from the email header mentions protonmail.com
I recently started using ProtonMail to communicate with this mailing list.
I had been using a different address and method for the last eight years, but
that stopped working inexplicably on 26 November.
I could well be the only one using
The extract from the email header mentions protonmail.com
I recently started using [ProtonMail](https://protonmail.com/) to communicate
with this mailing list.
I had been using a different address and method for the last eight years, but
that stopped working inexplicably on 26 November.
I could
