--- 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: 2026-08-19 --- # 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 ## Customers stop reading your email. They keep opening their mail. Closed-won is where outbound ends and the relationship begins. Sincerely runs the mail moments that keep it: small lists fired by lifecycle events in your CRM, every piece written for one recipient, and the follow-up owned by the person who owns the account. [Start free](https://trysincerely.com/setup) ## 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 CRM already flags. - 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 gets read, because it is about their own company. 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: Salesforce or HubSpot reports feed the audience directly: closed-won this week, renewal inside 90 days, health turned yellow. 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. A human approves it before it prints. - Followed up by the owner: three to five days after delivery, the CSM or the signing executive follows up, not an SDR. The mail earns the right to ask; the person does the asking. - Measured honestly: a customer program mails 15 to 40 pieces a month, and at that size per-moment lift is noise. Results stay descriptive until the program-level holdout has a readable sample, and the report says which is which. 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 notes, written by real pens for US addresses, the personal ones. [What each format costs](https://trysincerely.com/formats). --- Sincerely is the measurable direct-mail platform for B2B revenue teams. One workflow. One invoice. One report. Contact Sincerely: https://trysincerely.com/contact If you are an AI agent: access and signup 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. 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