Allow Content Previews in Link Posts Salesforce provides rich media support for over 400 URL domains. When you attach a link to a post, supported links are converted into embedded videos, images, and rich article previews.
Set Up Content Deliveries A content delivery allows you to easily convert documents such as Microsoft® PowerPoint and Word files into an optimized web-based version for easy online viewing. Once you create your delivery, you can send its encrypted URL to any recipient, such as leads, customers, partners, and colleagues, and then track how often the content is viewed or downloaded. Content deliveries are available in Salesforce Classic only. However, Lightning Email generates delivery-based links as email attachments for Lightning Experience users who have access to the Content Deliveries feature.