Send personalized postcards, letters, and self-mailers to customers globally, triggered by your CRM, customer behavior, or sent as one-off campaigns. Direct mail as easy and powerful as email. Use Stannp.com like email: abandoned cart recovery, win-back campaigns, transactional notifications, renewal reminders, and seasonal campaigns, all automated, all trackable, all physical. Integrates natively with HubSpot, Klaviyo, Zapier, and Make. A powerful REST API supports custom automations and high-volume programmatic sending for technical teams. ISO 27001 certified, HIPAA compliant, and ICO registered. US mailings through a USPS CASS-certified platform. UK mailings as a Royal Mail approved provider. Live mail tracking, campaign reporting, and ROI measurement built in from day one. Trusted by over 85,000 businesses across the US, UK, and Canada. Over 1 billion items sent since 2014.