I am looking to move newsletter development from Adobe Campaign Classic (not Standard) into Adobe Experience Manager 6.3. Does anyone have information / best practices on how to do so?
Ideally AEM users could author emails based on newsletter-friendly templates using newsletter-ready HTL components.
Please check out Adobe AEM documents  and  . Let us know if these documents help.
 Best Practices for Email Templates
 E-mail Marketing
Which method (1 or 2) would be preferred in order to keep the personalization fields from Adobe Campaign.: