In Oracle Integration Cloud, you can achieve looping behavior using the “While” activity in an integration flow. This allows you to iterate over a specific set of actions or conditions until a certain condition is met. To ensure that emails don’t go to spam when sending them in bulk, consider following these best practices:

1. Authentication and Reputation: Use a reputable email service provider and ensure that your sender domain has proper SPF, DKIM, and DMARC records configured.

2. Content Quality: Create well-structured and relevant email content. Avoid using excessive capitalization, misleading subject lines, or spammy keywords.

3. Consent: Send emails only to recipients who have opted in to receive communications from you. Explicit consent can help prevent your emails from being marked as spam.

4. Segmentation: Divide your email list into relevant segments. Sending targeted content to specific groups increases engagement and reduces the chances of being marked as spam.

5. Unsubscribe Option: Include a clear and easy-to-find unsubscribe link. This gives recipients the option to opt out of future emails, which can improve your sender reputation.

6. Testing: Test your emails using various email clients and spam filters before sending them in bulk. This can help you identify and rectify any issues that might trigger spam filters.

7. Avoid Attachments: Attachments, especially large ones, can increase the likelihood of your emails being flagged as spam. Instead, host the content on your website and provide links in your emails.

8. Avoid Excessive Links: While links are essential, too many links can trigger spam filters. Use links judiciously and ensure they lead to relevant and secure destinations.

9. Engagement: Encourage recipients to engage with your emails by including relevant calls to action. Emails that receive positive engagement are less likely to be marked as spam.

10. Monitor Feedback: Keep an eye on feedback from recipients. If you receive a high number of spam complaints, it could negatively impact your sender reputation.