Hi @IT Depart ,
How do I create interactive phishing attack training gamification?
Do you mean attack simulation training in Office 365 Defender?
Detailed instructions are provided in the following official article. Hope that can help you!
Simulate a phishing attack with Attack simulation training - Office 365 | Microsoft Learn
how to sync companny private smtp email to M365?
You could refer to the following articles to migrate mail from an external email system to M365:
Ways to migrate multiple email accounts to Microsoft 365 or Office 365 | Microsoft Learn
What you need to know about migrating your IMAP mailboxes to Microsoft 365 or Office 365 | Microsoft Learn
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