--- title: "Direct mail for investment banks and M&A advisors" description: "For lower-middle-market banks, M&A advisors, and brokers writing to owners: sell-side origination, buy-side searches, compliance review, and follow-up." canonical: https://trysincerely.com/playbooks/investment-banks last_updated: 2026-10-11 --- > 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 investment banks and M&A advisors > For lower-middle-market banks, M&A advisors, and brokers writing to owners: sell-side origination, buy-side searches, compliance review, and follow-up. Source: https://trysincerely.com/playbooks/investment-banks An advisor's letter asks for something different from a buyer's. A searcher or a fund wants to buy the company. An advisor wants to be the person the owner calls when they decide to sell, which might be next quarter or in five years. The letter has to be useful to an owner who is not selling yet, and it has to clear compliance before it prints. ![Two cards of envelopes. A green grid of 25 is labelled 25 or fewer, correspondence, firm procedures. A larger gold grid is labelled more than 25, retail communication, principal review.](https://trysincerely.com/images/playbooks/investment-banks.webp) *For investment banks and M&A advisors, a letter sent to more than 25 retail investors in any 30 days is a retail communication, which probably needs a principal's approval first.* This playbook is for lower-middle-market investment banks, M&A advisory firms, and business brokers. It covers two uses: sell-side origination, where you write to owners who might hire you to run a sale, and buy-side searches, where you write to companies a client wants to acquire. It is an operating playbook, not legal or compliance advice. ## Sell-side: offer something the owner can use now Most owners you write to are years from a decision. They still want to know what their company might be worth, what buyers in their industry look for, and what would raise the price before they sell. Offer a confidential conversation about those questions, with no engagement and no fee. Back it with your record, not with adjectives. Name the kinds of companies you have represented and, where clients agreed to it, the transactions you have announced. If your firm publishes a sector report, the letter can offer it, and the page behind the letter can link to it on your site. Do not put a valuation range or a multiple in the letter. You have not seen the numbers, and an owner who hears a number from a stranger either anchors on it or dismisses you. A fictional example: > Mr. Brennan, Harbor Point Logistics announced on its LinkedIn page last spring that it had opened a second cross-dock in Pooler. Our firm advises owners of logistics companies in the Southeast when they decide to sell, and we have represented four since 2021. Most owners we speak with are years from that decision. They still find it useful to know what buyers look for in a company like theirs, and what would make it worth more by the time they are ready. If that conversation would help, I would be glad to have it, in confidence and with no engagement. ## Buy-side: write for a client you cannot name When a client hires you to find acquisitions, the letter usually cannot name the client, which makes it harder to say why this company fits. Describe the buyer accurately without identifying them: "a family-owned distributor with about 300 employees in the Midwest" tells an owner more than "a strategic acquirer." Get the client's written agreement on that description, because it goes out on your letterhead. Ask for a short call with you, not with the buyer. Say that you will name the buyer once both sides have signed a confidentiality agreement, if that is your process. ## Put compliance review in the approval step Know which rules your firm works under before the first wave. A plain reading of [FINRA Rule 2210](https://www.finra.org/rules-guidance/rulebooks/finra-rules/2210), which is not legal advice and not FINRA guidance: - The rule counts anyone who is not an institutional investor as a retail investor, so most private business owners are retail investors. An owner or company with at least $50 million in total assets can count as institutional. - A letter sent to more than 25 retail investors in any 30 days is a retail communication. Twenty-five or fewer is correspondence. - A retail communication that promotes the firm's services probably needs a registered principal's approval before first use, and the firm keeps it with the approver's name and date. Correspondence is supervised under the firm's procedures instead. - Firms registered as capital acquisition brokers follow [CAB Rule 221](https://www.finra.org/rules-guidance/rulebooks/capital-acquisition-broker-rules/221), which sets content standards without the pre-approval step. - Advisors relying on the SEC's M&A broker exemption, in effect since March 29, 2023 for control sales of private companies with under $25 million of EBITDA or under $250 million of revenue, may not be FINRA members at all. State rules can still apply. FINRA has proposed replacing mandatory pre-approval with a risk-based approach in [Regulatory Notice 26-14](https://www.finra.org/rules-guidance/notices/26-14); as of October 2026 it has not been adopted. Whether three hundred letters written from one brief count as one communication is a question for your compliance principal. We found no FINRA guidance on it. Sincerely gives that review a place to happen. Set the campaign to review every draft, so each letter waits for a person to approve it before anything prints, and keep the first wave small enough for compliance to read every letter. Every letter traces to an approved design version, a checked address, and a person's launch, and the Send ledger records what mailed, to whom, and when. Sincerely does not decide whether a letter can go, and its records are not your firm's books and records. Keep copies under your own retention policy. ## Use the page behind the letter for depth Printed letters carry a QR code and a short link to a page made for that owner. For an advisor, the page is where depth goes: a short video from the banker who signed, a summary of the kinds of deals the firm has run, a link to the sector report on your site, a button that opens the banker's calendar, and a three-field reply form. A page cannot hold a PDF itself. Paid workspaces can print the link on the firm's own subdomain. [Landing pages for acquisition letters](https://trysincerely.com/guides/acquisition-landing-pages) covers what to put on it. ## Follow up on a long clock Sell-side relationships take years. Call one to two weeks after the letter arrives, and expect most answers to be "not now." Record the reason and the date with the company, then write when the owner said to, from a new fact or a new piece of sector news. A business sold through you in three years may start with a letter today and a phone call every spring. Sincerely's default cap allows no more than three pieces to one person in any 30 days across campaigns, which matters when bankers in different groups write to overlapping lists. When an owner says no, suppress them; suppression takes effect at once, removes them from every campaign, and cancels any queued piece that has not gone to the printer. ## Count mandates honestly Engagement letters are rare and slow. Count delivered letters where the print provider reports delivery, replies, first meetings, pitches, and signed engagements, and keep the reason each company was on the list so you can see which reasons led to conversations. At a few hundred letters a year, the readout stays descriptive. A firm that writes to thousands of owners can hold out a random set of companies in each campaign and report the difference in replies or meetings booked, with an interval. Each letter spends prepaid credits, shown before launch; the [formats page](https://trysincerely.com/formats) lists what each costs. Check your firm's gift policy before sending anything of value; where it allows one, a [gift](https://trysincerely.com/gifts) with a note belongs after a first meeting, and you see its exact price before you confirm. If your bankers have no time to run a program like this, Sincerely's team can run it for the firm. [Write to us](https://trysincerely.com/contact). ## Related questions - [Direct mail for private equity add-on sourcing](https://trysincerely.com/playbooks/private-equity): For private equity firms and independent sponsors writing to founders about add-ons and new platforms: the thesis, the list, who signs, and follow-up. - [Direct mail for search funds](https://trysincerely.com/playbooks/search-funds): For searchers writing to business owners, with guidance on list criteria, one sourced fact per letter, printed or handwritten letters, and stopping at a no. - [How to write a letter to buy a business](https://trysincerely.com/guides/letter-to-buy-a-business): What a first letter to a business owner about buying their company should say: one fact, who you are, the ask, what to leave out, and a weak letter rewritten. - [Proprietary deal sourcing with direct mail](https://trysincerely.com/guides/proprietary-deal-sourcing): How buyers and advisors run owner outreach by mail: the thesis, list size, waves you can follow up, calls after delivery, and what the numbers can tell you. - [How to follow up with a business owner about selling](https://trysincerely.com/guides/follow-up-with-business-owners): After your letter arrives: when to call, what to say, when to write again, and what to do when a business owner says yes, not now, no, or nothing. - [Direct mail for teams selling to financial services](https://trysincerely.com/for/financial-services): Branches, compliance review, and claims for teams selling to banks, insurers, lenders, and fintechs. --- 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. 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