Test mode
New accounts start in test mode so you can practice without emailing members.
Test mode uses sk_test keys and always sends to your test inbox with a [TEST] subject. Live mode uses sk_live keys and emails the customer on the subscription.
In test mode, search Email History for the test inbox, not the customer address. The send still happened; it was redirected.
The daily job will not run for an account that is in test mode with no test email saved.