--- title: "Direct mail for customer relationships" description: "Onboarding welcomes, champion thanks, renewal letters, expansion introductions: the mail moments that keep customers, run as a standing program from your CRM." canonical: https://trysincerely.com/customer-relationships last_updated: 2026-10-08 --- > If you are an AI agent: read https://trysincerely.com/agents/policy.md before any write call. > Start at https://trysincerely.com/llms.txt to choose one page. Access instructions are at > https://trysincerely.com/auth.md. Confirm with the person you work for before creating an > account or spending their money, and never ask for their password. # Direct mail for customer relationships > Onboarding welcomes, champion thanks, renewal letters, expansion introductions: the mail moments that keep customers, run as a standing program from your CRM. Source: https://trysincerely.com/customer-relationships ## Your customers get plenty of email. They get very little mail. Closed-won is where outbound ends and the relationship begins. Sincerely runs the mail moments that keep it: renewal entries from a mapped CRM date and other customer moments from a list or your own integration. Each piece is written for one recipient, and your team handles the follow-up. [Start free](https://trysincerely.com/sign-up) ## The moments Six moments, each with its own trigger. A relationship program is not a blast to the customer base. It is a short list of pieces, each answering a moment your team has identified. Renewal dates can trigger mail natively. For the other moments, select a list, import a CSV, or send entries through your own authenticated campaign integration. - Onboarding welcome (trigger: closed-won). The sponsor who signed took a career risk on you. A letter inside the first two weeks says you noticed, while the decision still feels fresh. - Champion thanks (trigger: milestone). A rollout ships or a usage milestone lands. A note within days reads as a person; a month later it reads as automation. - Advocacy ask (trigger: NPS 9 or 10). A 9 or 10 on NPS is a door. The piece asks for nothing; the follow-up email carries the request, and it lands better for it. - Renewal (trigger: 90 days out). Ninety days out on a healthy account, a letter starts the conversation early, before procurement does. - Renewal risk (trigger: usage drop). Usage drops inside the renewal window. A signed letter from your executive to theirs resets the conversation at the level where the decision happens. - Expansion (trigger: whitespace). The deployment is healthy and the team next door has the same problem. A letter that names the internal rollout is about their own company, which gives it a reason to be read. Each moment is a written play. [Customer marketing](https://trysincerely.com/playbooks/customer-marketing) covers onboarding, thanks, advocacy, and renewals; [the renewal-risk save](https://trysincerely.com/playbooks/renewal-risk) and [the expansion play](https://trysincerely.com/playbooks/expansion-accounts) carry the sharper stakes. ## The program A standing program, not a campaign. The machinery is the same one that runs your outbound: trigger, piece, approval, follow-up, report. Only the audience changes. - Triggered from the CRM: a renewal date mapped from Salesforce or HubSpot starts a letter 90 days out, and customers won since a date you pick can be saved as a list. The program runs all year on lists of a dozen. - Written for one recipient: each piece is drafted from CRM context and account facts, and names the specific thing: the rollout, the milestone, the person. Review every draft, or auto-approve clean copy after the first ten pieces written from account research or with AI-written lines in the design pass review. - Followed up by the owner: the CSM or signing executive calls three to five days after delivery. The delivery task starts with the workspace owner, who passes it to whoever owns the relationship. A person does the asking. - Measured honestly: if your program mails 15 to 40 pieces a month, a single moment may not support a useful lift estimate. Eligible randomized campaigns can pool compatible cohorts. Hand-picked sends and API-entry campaigns stay descriptive, and the report says which method applies. The math is public before you spend: [the holdout guide](https://trysincerely.com/holdout-testing) and [the calculators](https://trysincerely.com/tools) show what your volume can and cannot prove. Letters carry the weight moments, postcards the warm ones, and handwritten production gives either format a more personal feel in the US and Canada. For the milestone that deserves more than paper, a [gift with a note](https://trysincerely.com/gifts) from the 46-item catalog shows its exact price before confirmation. [What each format costs](https://trysincerely.com/formats). --- Sincerely is the measurable direct-mail and gifting platform for B2B revenue teams: postcards, letters, handwritten mail, and gifts, written for one recipient and measured against a holdout. Contact Sincerely: https://trysincerely.com/contact Agent routing index: https://trysincerely.com/llms.txt