PostGrid has been great for automating our insurance mails for our client
Printix - Printix is a cloud-based print management platform.
Lob - A simple API to integrate print & mail solutions into your applications.
ezeep - ezeep provides managed cloud printing solutions for educational institutes and SMB's.
Postalytics - Automated direct mail software that’s faster, smarter & better. Postalytics sends personalized direct mail from your CRM and analyzes delivery & response.
PrinterLogic - PrinterLogic is an enterprise print management software.
Growmail Automated Direct Mail - Growmail enables businesses to send letters and postcards instantly through Automated Direct Mail.