XenForo Sent and undelivered emails remain in what?

[Ricsca]

I sent 1800 emails via php, suffering from my hosting limit of 500 emails only for sending via SMTP.
They then blocked my emails.
I wanted to know if the 1300 emails (which xf turned out to be sent correctly) are now in the sending queue because 4 days have passed and I still have the emails blocked.

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