PostGrid has been great for automating our insurance mails for our client
HubSpot Free Email Marketing - Powerful drag and drop email marketing in the HubSpot CRM
Lob - A simple API to integrate print & mail solutions into your applications.
Elevatr Email Marketing Automation - Fast and easy email marketing software
Postalytics - Automated direct mail software that’s faster, smarter & better. Postalytics sends personalized direct mail from your CRM and analyzes delivery & response.
GMass - GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!
Growmail Automated Direct Mail - Growmail enables businesses to send letters and postcards instantly through Automated Direct Mail.