PostGrid has been great for automating our insurance mails for our client
Lob - A simple API to integrate print & mail solutions into your applications.
USPS Informed Delivery - Get an image of your mail before it arrives
Postalytics - Automated direct mail software that’s faster, smarter & better. Postalytics sends personalized direct mail from your CRM and analyzes delivery & response.
Arrive Package Tracker - The best way to track all of your online orders 📦
AmazingMail - Business print-mail solution
PackageX - PackageX is a modern logistics platform.