The password no longer travels through third-party mail servers or sits
forever in an inbox: it moves onto the instance (encrypted, same as
nc_admin_ref) and shows on the dashboard until the customer clicks
"Notiert", which deletes it for good.
Mail::to($x)->queue($mail) resolves the DEFAULT mailer, and
Illuminate\Mail\Mailer::queue() (vendor Mailer.php:482) does
`$view->mailer($this->name)->queue($this->queue)` — overwriting
MaintenanceAnnouncementMail/MaintenanceCancelledMail's own 'cp_maintenance'
with the default mailer's name ('array' in tests, 'log'/whatever
MAIL_MAILER is in prod) before the job is even built. Both mails kept
sending through the old .env account instead of MailboxTransport. CloudReady
was never affected — MailChannel.php:66 preserves a notification's own
mailer.
Fix: name the mailer before queueing — Mail::mailer($mail->mailer)->to(...).
$this->name on the resolved Mailer is then already $mail->mailer, so the
vendor overwrite becomes a no-op instead of a silent downgrade. Confirmed by
reading the vendor source, not assumed.
SenderAddressTest's "names the purpose mailer..." test asserted
$mail->mailer on a bare, never-queued mailable, which proves nothing about
what survives queueing — the constructor sets it right regardless of what
MaintenanceNotifier does with it. Replaced it with one that drives
MaintenanceNotifier::deliver() under Queue::fake() and inspects the pushed
SendQueuedMailable's mailable. Verified it fails against the pre-fix code
first (the pushed job carried mailer = 'array'), then verified the fix
makes it pass, then mutated the fix away and watched it fail again.
The seed migration also guards against SECRETS_KEY being unset at migrate
time (encrypting the .env password would otherwise throw and take the
whole migration down, on a fresh install as much as in the test suite),
and the four tests/Feature/Mail files written before this migration reset
the mailbox table in their beforeEach so they keep testing what they did
before mailboxes.key collided with the seeded rows.
A mutation the reviewer ran (if ($box !== null) -> if (true)) left every
test green: CloudReady hand-rolled the same null-mailbox guard as
SendsFromMailbox, but nothing exercised its null branch. Added the
missing test, then extracted the decision itself (null mailbox -> no
sender fields, no_reply -> no Reply-To) into one shared method so an
Envelope-shaped and a MailMessage-shaped consumer can no longer disagree.