LetterFriend
LetterFriend is a direct mail and handwritten letter service that helps organizations create personalized, real-handwritten notes, envelopes, and cards, crafted by professional writers rather than fonts, robots, or printers, to cut through digital noise and strengthen customer relationships, referrals, and pipeline growth through high-impact physical outreach. The platform lets users upload contact lists via CSV or integrate with CRM systems, Zapier, or an API to automate and scale campaigns, whether sending thank-you letters, prospecting notes, holiday cards, or other personalized correspondence that is hand-addressed, handwritten, and mailed on behalf of the customer. LetterFriend emphasizes human-touch direct mail with real people in New Jersey writing each word, delivering consistently higher open and response rates compared with typical printed or email outreach, and offers customizable options such as envelopes, sticky notes, signatures, postcards, etc.
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Scribeless
We are a handwritten direct mail vendor that has facilities in the California, New York, the UK, Canada, and Europe. Thousands of companies trust us and our mailers to stand out in the postbox and use us to build personal relationships with prospects, partners and customers.
Simply put, handwritten letters grab attention, which is ever more valuable as traditional channels become less impactful.
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Handwrite.io
Handwrite.io enables businesses to deliver authentic, personalized handwritten cards at scale using proprietary robots that write with real pens and ink, complete with genuine human-like variations in spacing and style, and even handwritten envelopes with real stamps for maximum impact. Upload recipient data or connect via CRM, pick from premium stationery designs, or upload your own or get one custom-created, then type your message (optionally saved as a template) to create bespoke cards that cut through digital noise and drive remarkable engagement. With a 96% open rate compared to typical email rates around 20%, the platform empowers users to close more deals, spark viral word-of-mouth, and increase repeat business. It supports automated workflows via Zapier (compatible with over 3,000 apps like Shopify, Salesforce, Google Sheets, Typeform, and more) and offers a developer-friendly API for custom integrations.
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Thanks.io
thanks.io is a direct mail automation platform and API that sends handwritten-style postcards, letters, notecards, gift cards, and MagnaCards on autopilot.
Trusted by 5000+ businesses since 2017, it helps marketers, agencies, realtors, e-commerce brands, and SaaS companies cut through digital noise with physical mail.
Features: proprietary handwriting engine with realistic AI fonts, per-recipient AI messaging, dynamic images, Street View postcards, QR code tracking, scan notifications, and analytics.
Automation: drip campaigns, birthday/holiday triggers, Neighbor Blast radius mailers, evenFLOW paced sending, address verification, suppression lists, and Canva-synced templates.
Developer-first REST API v2 with OpenAPI spec, OAuth2, webhooks, embeddable widget, and LLM-friendly MCP server.
500+ integrations: HubSpot, Salesforce, Shopify, WooCommerce, Zapier, Make, n8n, and 8,000+ apps.
No minimums, no commitments, real free tier, nonprofit rates from $0.45/piece.
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