MailerBot vs ZAP~POST

MailerBot creates and sends physical postcards, letters, invoices, EDDM and custom print pieces through an API or dashboard. Users can design postcards, write letters in a rich text editor or upload print-ready PDFs. Designs support merge fields, links, QR codes and coupon codes with usage tracking. Contacts can be imported from CSV, checked against addresses and grouped into targeted lists. Campaign analytics track spend, volume and delivery rates, with date filters and report export. The REST API has more than 50 endpoints and supports JWT and API key authentication. Scale adds automated drip sequences, triggered sends and multi-touch flows. MailerBot says it prints, stamps and mails pieces, with delivery-status tracking; Launch includes USPS Intelligent Mail Barcode tracking on each piece. Scale costs $99/month, with letters priced at 69¢ for the first page plus 15¢ per additional page and postcards at 49¢. Command costs $399/month. The site presents the service for retail, nonprofits, home services, startups and digital nomads.

ZAP~POST sends personalized postcards and letters when a real-time event or customer action triggers a campaign. Its web design app supports drag-and-drop editing, custom fields, uploaded images, and unique promotional or QR codes. Mail formats include oversized and A5 postcards, an A5 one-piece mailer, and a secure letter. Campaigns can use recipient-specific QR codes and tracking, while conversion attribution is handled through the customer’s analytics platform. ZAP~POST validates recipient details and cleans records; rejected records may receive Zap credits under its credit rules. Ecommerce, CRM, and CDP systems can connect by API, and listed integrations include Klaviyo, Dotdigital, Ometria, HubSpot, Bloomreach, Zapier, Force24, and Shopify. The main standard mailing location is the UK, with campaigns also available in the US, Germany, the Netherlands, France, and Italy; specifications, prices, and turnaround vary by country. A one-off trial campaign is available without a credit card, and the site advises trying at least 1,000 recipients. The service is web-based and headquartered in London.