--- title: "Direct mail for professional services and agencies" description: "Win agencies, consultancies, and accounting firms with a researched letter to the partner who decides, built on a real change at the firm." canonical: https://trysincerely.com/for/professional-services-agencies last_updated: 2026-10-18 --- > 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 professional services and agencies > Win agencies, consultancies, and accounting firms with a researched letter to the partner who decides, built on a real change at the firm. Source: https://trysincerely.com/for/professional-services-agencies Agency founders and partners judge arguments for a living. Most vendor email names the firm and asks for fifteen minutes. It could have gone to any shop on the list. A partner answers a letter with a real reason behind it, such as a referral, a leadership hire, or a new practice. The letter also needs one point the partner can pass to a colleague. Sincerely builds each letter on a specific, true fact about the firm, such as the practice it just launched. It researches the firm, writes, prints, and mails the piece, and sends follow-ups on your schedule. You approve every word, and nothing prints until you launch. This page is for teams that want to win professional services firms as customers. Agencies mailing on behalf of their own clients need a different playbook. Law firms have their own professional rules and a [dedicated guide](https://trysincerely.com/for/law-firms). ## A letter written for an agency founder ![Typed letter from Tallyroom, an agency workflow software company, to Sam Whitaker, managing partner at Hollis Fern Studio, opening with: Your new healthcare practice brings a different review process than the commercial work on your site today.](https://trysincerely.com/samples/for-professional-services-agencies.webp "A fictional sample: a typed letter from a made-up workflow software company to the managing partner of an agency, with the researched words underlined.") What makes it work: - It opens with a change at the agency, a new healthcare practice whose reviews differ from its commercial work. - Its evidence is the firm's own news, two healthcare strategists hired this summer. It names no client and no engagement. - It describes the problem the founder sees. The account lead learns about a delay when the launch date moves. - The ask is small. It offers the workflow on one page and asks whether to send it. Use a typed letter for a researched argument. Use a handwritten note for a personal reason, such as thanks for a referral. A postcard suits only a public, simple message like an event reminder. The [handwritten mail guide](https://trysincerely.com/guides/handwritten-mail-b2b) explains why fake intimacy reads worse than a well-written printed letter. ## Write to the person who owns the decision Titles vary more here than in software companies, so start from who runs what at the firm. - A managing partner or founder owns firm-wide priorities at a smaller firm. - A practice leader owns revenue and delivery inside a larger partnership. - A COO or operations director owns staffing, systems, and margin. - A client-service or growth leader owns pipeline and account development. - A finance or technology leader joins when your product changes billing, risk, data, or core systems. One recipient is usually enough. Write to two only when each has a separate reason to care. A managing partner may watch margin while an operations director runs the workflow. ## Write when the firm changes how it works An award is a weak reason to write. A change in how the firm sells or delivers work is a strong one. - A new partner or practice leader joins. - The firm opens an office or launches a practice. - A public client win creates a new delivery burden. - Hiring concentrates in a specialty or region. - A merger changes client ownership, or the firm's systems and brand. - A conference meeting, referral, or proposal creates a legitimate follow-up. If your rep met the recipient, say what they discussed. The [event follow-up play](https://trysincerely.com/playbooks/event-follow-up) covers that moment. ## Protect client and relationship boundaries A careful seller worries that a letter could expose a client or interfere with a relationship someone else owns. Both depend on what the piece says and who knew it was going out. Never put a confidential client name, matter, engagement, or proposal detail on a postcard. Use an envelope for anything sensitive. Reference only facts your team has permission to use. Check with the account owner before launch. Otherwise a founder note, a partner referral, and an automated nurture can reach the same person separately. If a contact objects, or the relationship owner calls the message inappropriate, suppress the contact at once. Mind the office too. Many firms have a main office, several small offices, shared workspaces, and hybrid partners. The website rarely says where a partner works. Choose the office from the recipient's profile, CRM history, firm bio, or event context. Put the firm's name and any known floor or suite on the envelope. Small agencies may register a home address as the business address. Do not mail to it just because a database marks it valid. If you cannot tell where the partner works, ask or use another channel. ## Let Sincerely run the mail Sincerely runs the channel from finding the firm to timing the follow-up. You approve each piece and take the calls. - You start with the person closest to the problem. Sincerely finds firms by specialty, size, office footprint, or business change. Then it adds the partner, practice leader, or operations owner. - You see why every firm is on the list. Each account keeps its reason for writing with a date and source. The reason might be a new leader, a merger, a referral, or an event conversation. - You decide on doubtful addresses. Sincerely sends uncertain and residential-looking addresses to review. A person decides there whether the address and the relationship justify sending anything. - Sincerely writes each letter for one person. The relationship owner edits the words and approves the exact design. The same person handles the follow-up. - Automated touches and personal introductions count against the same limits. Referral notes and one-off notes share the suppression, frequency cap, budget, and send records of campaign pieces. - A referral or a partner win can get more than a letter. Sincerely sends a gift with a personal note from a 46-item catalog, with prices from $49. You see the exact price before you confirm. See [gifts](https://trysincerely.com/gifts). ## See what works Most programs in this market are small. A founder might write to twenty firms. Track replies, meetings, proposals, and qualified pipeline separately. Describe what happened without pretending twenty firms make a controlled trial. With a larger audience, Sincerely can keep an account-level holdout, pool comparable cohorts, and show lift with its interval. Keep real referrals and promised follow-ups out of the holdout. The [B2B direct mail guide](https://trysincerely.com/guides/b2b-direct-mail-marketing) covers the method, and the [small-audience guide](https://trysincerely.com/guides/direct-mail-small-audiences) explains what a narrow program can support. ## Start with the firms already in your CRM Pick the firms where something changed this quarter. Upload them or sync Salesforce or HubSpot, and approve the first drafts. Each piece spends prepaid credits, and you see the count before it goes out. If nobody on your team has time, Sincerely's team can [run the program for you](https://trysincerely.com/managed-direct-mail). [Write to us](https://trysincerely.com/contact) to book a demo or hand it over, or see [what each format costs](https://trysincerely.com/formats). ## Related questions - [Direct mail for founder-led sales](https://trysincerely.com/playbooks/founder-led-sales): How a founder chooses a small account list, writes a credible personal letter, follows up, and judges the results without overstating a tiny sample. - [The event follow-up play](https://trysincerely.com/playbooks/event-follow-up): Mail a personal note within days of a booth conversation, reference what you actually discussed, and use the piece to set up the meeting ask. - [B2B direct mail: how to run it, with campaign ideas](https://trysincerely.com/guides/b2b-direct-mail-marketing): How to run B2B direct mail marketing. When mail belongs, campaign ideas matched to real triggers, addresses, copy, send controls, and honest measurement. - [Does handwritten mail work for B2B outbound?](https://trysincerely.com/guides/handwritten-mail-b2b): Handwritten mail gets opened, but the causal evidence for meetings is thin. Who it fits, where it reads fake, and what Sincerely writes by hand today. --- Sincerely is personalized direct mail and gifting for B2B revenue teams: postcards, letters, handwritten mail, and gifts, each written for one recipient. Contact Sincerely: https://trysincerely.com/contact Agent routing index: https://trysincerely.com/llms.txt Listings: https://www.g2.com/products/sincerely and https://www.producthunt.com/products/sincerely