What causes manually-sent emails using a certain Email Template, to no longer succeed in sending when it was working before and even while other Email Templates send their emails just fine, and for this problematic one to show up in the Sent Emails List as Not Sent and Compliance Verified = No?

AI generated answer (using internal Slack threads):

****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ****** The issue of manually-sent emails using a certain Email Template no longer succeeding in sending, even though it was working before and other Email Templates are sending their emails just fine, could be due to several reasons: 1. Email Preferences: Check your email preferences in NetSuite. Make sure that the DKIM is set up and properly tested. Also, ensure that the test email address is added in Email preferences > Sandbox and Release Preview after the last refresh. 2. Duplicate Emails: NetSuite has a mechanism to prevent the sending of apparent duplicate emails. If you are sending multiple emails with similar/same subjects, NetSuite might block them as potential spam. Try adding a unique value in the subject to avoid this. 3. Spam Detection: The issue might be on the recipient's end. The recipient's email server or spam detection might be blocking the emails. It's also possible that the ISP's spam detection is blocking the emails. 4. SMTP Server: If you are using NetSuite's mail server, it's possible that the IP is being blacklisted due to cross-client IP sharing and the campaign management. Setting up your own SMTP server might resolve this issue. 5. Scripted Records: Check under Customization > Scripting > Scripted Records to see if there are any scripts that might be interfering with the email sending. Remember to thoroughly investigate all these areas to identify the root cause of the issue.