Sincerely
Personalized direct mail at scale, for B2B teams.
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Sincerely is AI direct mail for B2B revenue teams. For each target account, it researches the company and writes a postcard, letter, handwritten note, or gift note for one person, with every claim linked to its source. One campaign sequences all four formats to the same account. Nothing prints until a person approves it. An account-level holdout reports the lift with an interval. Run it in the app or from Claude or ChatGPT over MCP.
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PH · launched Oct 23, 2026 · 2 upvotes (top 23%)
- Marketing
- Workflow automation
- B2B
- AI feature
- Commercial product
- Writing
- Marketing
- Artificial Intelligence
Similar launches
See all 237 similar launches →Could you build this?
Partial The research and copy generation are vibe-codeable, but a real version depends on physical print, mail, and handwriting fulfillment, which needs vendor operations and hardware-backed partners.
What it would actually take: The software side is an account-research pipeline, an LLM writing layer with source-linked claims, and a campaign sequencer with a print-approval workflow. The hard parts are integrations with print and mail fulfillment vendors and handwriting services, plus postal compliance and quality control at scale. This requires operations expertise and vendor relationships as well as engineering.
Competitors
Other products that read as similar to this one : 237 launches clear the similarity bar, closest 8 shown.
Attention rank: #42 of 238 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 345 days after the earliest competitor.
- Digital Love Letter · ph · 2026-10-15 · 1 upvotes · similarity 0.52
- Dearmailo · ph · 2026-10-13 · 1 upvotes · similarity 0.51
- Dear.so · ph · 2026-10-14 · 1 upvotes · similarity 0.45
- CardPop · Personalized greeting cards · ph · 2026-10-10 · 1 upvotes · similarity 0.44
- PersonaSend · ph · 2026-10-16 · 1 upvotes · similarity 0.44
- Prospexto Direct Mail™ · ph · 2026-09-28 · 1 upvotes · similarity 0.43
- IRIS Postal Forms · ph · 2026-09-18 · 3 upvotes · similarity 0.43
- CardShare.ai · ph · 2026-10-01 · 2 upvotes · similarity 0.43
Other launches for this product
- No other launches for this product.