Letter Enclosing Proposal_Short Template

In plain language: The sender's name, title, company, address, phone, and email appear at the top; the recipient's name, title, company, and address follow below the date.

Common mistake: Using a nickname or informal email alias instead of the sender's full legal name and professional contact details, which can undermine credibility with a new prospect.

In plain language: States the date the letter is written and sent, establishing a clear timeline for the proposal submission.

Common mistake: Leaving the date as a placeholder and forgetting to update it before sending — a dated proposal letter with a blank or wrong date looks careless to the recipient.

In plain language: An optional subject line immediately below the salutation that identifies the proposal by name or project reference, helping the recipient file and retrieve the letter easily.

Common mistake: Omitting the reference line entirely when submitting to a large organization, where the letter may pass through multiple departments before reaching the decision-maker.

In plain language: The formal greeting that addresses the recipient by name and establishes a professional tone from the first line.

Common mistake: Using 'To Whom It May Concern' when the recipient's name is known — this signals that the letter is generic and not tailored to the specific reader.

In plain language: The first paragraph states plainly that a proposal is enclosed, names the proposal, and briefly recalls any prior contact or request that prompted it.

Common mistake: Opening with a vague statement like 'We are pleased to submit the following' without naming the proposal or referencing the context, leaving the recipient unclear about what they are reading.

In plain language: A short paragraph — two to four sentences — that summarizes what the proposal covers and highlights the primary benefit or solution being offered.

Common mistake: Repeating the entire proposal in the letter body, which defeats the purpose of a short enclosure letter and discourages the reader from opening the proposal itself.

In plain language: Invites the recipient to take a specific next step — reviewing the proposal, scheduling a call, or contacting the sender with questions — and provides direct contact details.

Common mistake: Ending with a passive statement like 'We look forward to your response' with no contact details, which puts the burden entirely on the recipient to find a way to respond.

In plain language: The sign-off phrase, sender's handwritten signature space (for print), and typed name, title, and company below.

Common mistake: Using an informal close like 'Thanks' or 'Cheers' in a first-contact formal proposal letter, which can reduce the perceived professionalism of the submission.

In plain language: A brief line at the bottom of the letter — 'Encl:' followed by the document name — confirming exactly what is enclosed with the letter.

Common mistake: Omitting the enclosure notation, which can cause confusion if the letter and proposal become separated in a large email thread, filing system, or postal package.

A letter enclosing a proposal is a short formal cover letter submitted alongside a business proposal document. It introduces the sender, identifies the enclosed proposal by name, briefly summarizes its purpose, and directs the recipient to a next step. It functions as a professional handshake before the recipient opens the proposal itself.

Not always, but a cover letter is strongly recommended for any formal or first-contact proposal submission. It signals professionalism, provides essential context, and gives the recipient a direct point of contact. For informal submissions to existing clients, a brief email introduction may suffice — but a formal letter adds credibility in competitive bid situations.

A short cover letter — typically one page — introduces the proposal and highlights the primary benefit in two to four sentences. A long cover letter may run one to two pages and includes a more detailed summary of the proposal's key sections, relevant credentials, or a response to specific evaluation criteria. Use the short format when the proposal is self-explanatory or the relationship is established; use the long format for complex RFP responses or new high-stakes prospects.

One page is the standard for a short proposal enclosure letter. The body should contain no more than three short paragraphs — an identification opening, a brief summary, and a call to action. A letter longer than one page for a short-format submission signals that the sender has not edited carefully.

A handwritten signature is expected on printed formal proposals. For emailed submissions, a scanned signature or a professional typed sign-off block is acceptable. Always include the sender's typed name, title, and company name below the signature space, regardless of format.

Formal but direct. Avoid overly stiff language that sounds templated, but do not use casual phrasing in a first-contact proposal to a corporate client. The goal is to sound like a capable professional who respects the recipient's time — clear, specific, and brief.

Yes. For emailed proposals, you can either paste the body of the letter directly into the email body or attach it as a PDF alongside the proposal. Attaching it as a separate document is preferable when the proposal will be forwarded internally, as the cover letter remains with the proposal rather than in the email thread.

An enclosure notation — typically 'Encl: [Document Name]' at the bottom of the letter — explicitly lists the documents included with the letter. It matters because proposals frequently pass through multiple hands or filing systems; the notation ensures the recipient knows exactly what they should have received and makes it easy to flag if anything is missing.