MailerBot vs Sincerely

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.

Sincerely is web software for B2B direct-mail campaigns using CRM or CSV audiences, personalized printed pieces, and measurement against account-level holdout groups. Salesforce and HubSpot sync account, contact, opportunity-stage, and campaign-membership data, and CSV import is supported. The product drafts personalized writing from account research and links each factual claim to a source. Drafts require human approval before printing, and edits are versioned. Postcards and letters can be mailed; handwritten notes and gifts are not live because their fulfillment adapters are not built. Address verification and correction are included on every plan, with low-confidence addresses routed for review. Every plan includes account-level holdouts, and Sincerely says five of eight campaign types measure lift against a holdout. When a plan reaches its monthly cap, live campaigns pause rather than print additional pieces. The free Audit plan supports imports, a mailability audit, brand designs, and draft editing, but cannot mail. Paid plans start at $250 a month; Pilot is 199.00 USD once.