Users who finish onboarding with an active bank connection but no Pro plan
are bounced to the paywall forever by EnsureUserIsSubscribed. Reach out to
them the day after onboarding to learn why they did not continue, inviting
a direct reply.
Add a daily scheduled command that selects this cohort (onboarded yesterday,
has a banking connection, no Pro plan, not already mailed) and queues a new
idempotent drip job, following the existing Drip mailable/job conventions.