Sincerely

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Sincerely is direct mail and gifting software for B2B sales and marketing teams. It brings audience building, AI-assisted personalization, campaign management, fulfillment, and measurement into one workspace. Teams can import contacts from Salesforce, HubSpot, or CSV, or use the built-in assistant to find and research accounts. Sincerely checks addresses for mailability, creates recipient-specific copy grounded in sourced account facts, and lets teams review designs and messages before sending postcards, letters, and gifts across the United States and Canada. Campaigns combine approved designs with sending schedules, budgets, frequency limits, and human approvals. Sincerely handles production and fulfillment without requiring separate print-vendor accounts. Personalized QR codes and landing pages connect engagement and responses to individual pieces, while account-level holdout tests estimate incremental lift and show the uncertainty in the results.