Despite all of our efforts, gmail insists on marking our verification emails to
new users as spam. We have already changed our mail delivery providers;
non-gmail users don't face this problem; and even for gmail, (a) existing Ente
users also get these mails correctly with SPF/DKIM/DMARC PASS, and (b)
non-verification emails get delivered (in the anecdotal reports we've received).
As an attempt at some voodoo, try changing the subject and content of the mail,
to try and rule out some faulty gmail classifier that uses the email body.
