Sending a formal business letter requires meticulous attention to detail, from the choice of high-quality letterhead paper to the final lines of text on the page. When you include additional physical documents inside the envelope—such as a signed contract, a bank check, or a printed report—you must alert the recipient by using an enclosure notation. This small but critical formatting element sits at the very bottom of your letter, serving as a physical checklist for the reader and ensuring that no supplementary materials are overlooked or discarded during opening.
In professional environments, especially in humid tropical climates like the Philippines where documents can easily stick together inside a sealed envelope, a clear notation is indispensable. It acts as an administrative safeguard, confirming exactly what should be inside the package. Properly formatting this notation maintains the professional integrity of your correspondence and aligns your document with international business standards.
When to Include an Enclosure Notation
An enclosure notation is necessary whenever you place physical items inside the envelope alongside your primary letter. These items are distinct from the letter itself and are meant to provide supporting evidence, financial transactions, or detailed reference material. Common examples of physical enclosures include printed financial reports, legal contracts, brochures, photographs, or bank checks. If you are mailing a physical document that cannot be integrated directly into the body of the letter, it qualifies as an enclosure.
Omitting this notation can lead to significant administrative confusion. When a recipient opens an envelope, they may pull out the letter and fail to notice a thin slip of paper, such as a check or a small receipt, left behind in the corners of the envelope. In busy office settings, administrative staff often open mail and route documents to different departments; without a clear notation on the letter itself, there is no permanent record that the supplementary files were ever received or attached.
It is important to distinguish physical mail enclosures from digital email attachments. While an email attachment relies on digital file uploads, a physical enclosure demands careful consideration of paper weight, envelope capacity, and mailing costs. If you are sending a digital message, you should use the term “attachment” within the email body, whereas “enclosure” is strictly reserved for physical mailpieces. Understanding this distinction prevents the unprofessional mixing of digital and physical terminology in your formal communications.
To project professionalism, match the paper quality of your enclosures to your primary letterhead. For instance, if your letter is printed on premium 100gsm paper, using the same paper weight for your enclosures creates a cohesive presentation. Additionally, select an envelope size—such as a standard DL envelope or a larger pocket envelope—that comfortably accommodates all materials without causing excessive bulk.
Standard Placement and Spacing Rules
The enclosure notation must be placed at the very end of your business letter, positioned below the signature block. In standard business correspondence, the signature block consists of your complimentary close (such as “Sincerely”), followed by three to four blank lines for your physical signature, and then your typed name and title. If your letter is prepared by an administrative assistant, the typist’s initials will appear in lowercase letters two lines below your typed name, and the enclosure notation will follow two lines below those initials.
If you are typing the letter yourself without a separate typist, the enclosure notation is placed exactly two lines below your typed name and title. This spacing is achieved by hitting the return key twice, leaving one blank line of space between your name and the notation. Maintaining this consistent vertical spacing ensures that the bottom of your letter looks balanced and uncluttered, preventing the text from running too close to the bottom margin of the paper.
The alignment of your notation depends entirely on the layout style you choose for your business letter. In a full block style letter—which is the most common and modern format—every line of text, including the date, sender’s address, signature block, and enclosure notation, is aligned flush with the left margin. If you are using a modified block style, where the date and signature block start at the horizontal center of the page, the enclosure notation still remains aligned flush with the left margin, preserving a clean left-hand border.
When signing your letter, use a high-quality pen with quick-drying ink to prevent smudging when you fold the letter. Allowing the ink to dry completely before folding is especially important in humid climates like the Philippines, where moisture in the air can prolong drying times and lead to unsightly ink transfers on your pristine stationery.
Accepted Wording and Abbreviations
There are several standard ways to write an enclosure notation, ranging from fully spelled-out words to concise abbreviations. The most formal approach is to write the word “Enclosure” in its entirety, starting with a capital letter. If you prefer a more compact layout, the abbreviations “Encl.” or “Enc.” are widely accepted in both corporate and legal environments. Whichever style you choose, consistency is key; you should use the same format throughout all correspondence originating from your office.
The choice between singular and plural forms depends on the exact number of items you are placing inside the envelope. If you are enclosing a single document, such as a single contract page, use the singular form: “Enclosure” or “Encl.” If you are including multiple items, such as a check and a brochure, you must use the plural form: “Enclosures” or “Encls.” This grammatical accuracy immediately signals to the recipient how many separate items they need to look for.
Using these standardized terms helps maintain a formal and authoritative tone in your business letters. Avoid using informal phrases like “Attached papers” or “Included inside” in formal correspondence, as these do not conform to professional standards. Standardizing your notations ensures that your letters meet the expectations of legal professionals, corporate executives, and administrative staff globally.
If you choose to use abbreviations, always include a period at the end of the abbreviation to denote that the word has been shortened. For example, “Encl.” is correct, while “Encl” without a period is considered a minor formatting error. Paying attention to these small punctuation details demonstrates a high level of professionalism and respect for standard business communication protocols.
How to List Multiple Enclosures
When you are sending more than one supplementary document, you have two primary options for formatting your notation. The simplest method is to state the total number of enclosures in parentheses directly after the word or abbreviation. For example, writing “Enclosures (3)” or “Encl. (3)” tells the recipient that there are three distinct items included in the envelope. This method is highly efficient for routine mailings where the identity of the documents is already clear from the body of the letter.
For more complex mailings, such as legal submissions or medical records, listing each enclosed document individually provides greater clarity and security. To do this, write the notation followed by a colon, and then list each item on a new line, slightly indented. For example:
Enclosures:
- Signed contract agreement
- Certified bank check
- Product specification sheet
This detailed list serves as an explicit receipt of contents, making it easy for the recipient to verify that every critical document arrived safely.
When formatting a detailed list, ensure that each item is described briefly but clearly. Use standard line breaks and consistent indentation to keep the list visually distinct from the rest of the letter. This clean formatting prevents the bottom of your page from looking like a cluttered block of text, allowing administrative staff to check off each item quickly as they process the incoming mail.
Common Formatting Mistakes to Avoid
One of the most frequent errors in business letter formatting is placing the enclosure notation in the wrong section of the document. The notation should never be placed within the body paragraphs of the letter or positioned above the signature block. Placing it too high disrupts the natural flow of the letter and violates standard business layout rules, making the document appear unprofessional and poorly planned.
Another common mistake is the inconsistent use of abbreviations or mixing singular and plural forms. For instance, writing “Encl.” when you have enclosed three separate documents can confuse the recipient, who may stop looking after finding the first item. Always double-check that your notation matches the actual count of physical items. In humid environments, papers can easily stick together, so physically counting and separating each sheet before placing them in the envelope is a vital step.
Finally, always verify that the physical items listed in your notation are actually present in the envelope before sealing it. It is incredibly common to write a letter, print it, sign it, and then seal the envelope only to realize the check or contract is still sitting on your desk. Developing a strict habit of matching your physical enclosures to your written notation right before sealing prevents embarrassing follow-up mailings and maintains your professional reputation.
Frequently Asked Questions (FAQ)
What is the difference between an enclosure and an attachment?
The primary difference lies in the medium of communication. An enclosure refers exclusively to physical documents or items placed inside a physical paper envelope alongside a printed letter. An attachment, on the other hand, refers to digital files—such as PDFs, spreadsheets, or images—that are uploaded and sent electronically via email or digital messaging platforms. Using “enclosure” in an email or “attachment” in a physical letter is a common terminology error that can make your communication look unprofessional.
Should I list the names of the enclosed documents?
For standard, everyday business letters where the body of the letter already explains what is included, a simple count like “Enclosures (2)” is perfectly sufficient. However, if you are sending highly important, legal, or financial documents, listing each item by name is highly recommended. This detailed approach provides an explicit record of exactly what was sent, which can be crucial for legal protection or administrative tracking if any disputes arise regarding the contents of the mailing.
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