What Is a Sales Covering Letter and How to Write One

A sales covering letter is a concise, polite letter sent alongside a sales quotation or proposal to introduce your offer and encourage the recipient to respond. It summarises the key benefits, explains the attached documents, and invites further contact.

Why this comes up / what goes wrong

Many small-business owners send quotations or proposals without a covering letter, assuming the recipient will respond automatically. Without it, the offer can be overlooked or misunderstood. Customers may not know what to do next or delay replying, resulting in lost sales opportunities. A clear sales covering letter guides prospects, making your offer stand out and prompting timely follow-up.

Step-by-step

1. Write a clear subject line or heading mentioning the offer and recipient’s name if possible.
2. Greet the recipient politely, using their name or title.
3. State the purpose of your letter immediately — that you are sending a quotation, proposal, or product information.
4. Briefly summarise key benefits or highlights of your offer to capture interest.
5. List the documents enclosed or attached (quotation, brochure, terms).
6. Invite the recipient to ask questions and provide your contact details.
7. Specify the next steps clearly, such as a follow-up call or meeting.
8. Close politely, thanking them for their time.
9. Sign off with your name, position, and company details.

Check your letter is concise (one page max), clear, and free from jargon or errors. Tailor it to the recipient’s needs and avoid sounding pushy.

Using a CRM with features like a built-in CRM dialer helps manage follow-ups and keeps your sales process organised.

Example (fictional figures)

A kitchen-fitting company in Leeds sends a sales covering letter with a quotation dated 15/05/2026.

Dear Mr Smith,

I am pleased to enclose our quotation for the kitchen fitting project at your home, as discussed during our visit on 10/05/2026. Our proposal includes the supply and installation of bespoke units, appliances, and finishing.

Key highlights:

• Custom design tailored to your space
• High-quality materials with a 5-year warranty
• Completion within 4 weeks from acceptance

The enclosed quotation totals £12,600 including VAT. This is calculated as follows:

Cost of materials and labour = £10,500 VAT at the standard 20% rate = £10,500 × 20% = £2,100 Total quotation = £10,500 + £2,100 = £12,600

Please review the details and let me know if you have any questions.

I will follow up with you on 22/05/2026 to discuss any queries and the next steps.

Thank you for considering our services.

Kind regards,

Jane Doe Owner, Leeds Kitchen Fitters

Common mistakes

• Being too vague or generic: Tailor the letter to the recipient and clearly state what you are sending.
• Overloading with technical details: Keep it simple and focused on benefits.
• Failing to specify next steps: Always say what happens next or when you will follow up.
• Sending without proofreading: Check spelling, grammar, and names carefully.
• Not including contact information: Make it easy for the customer to reach you.

Use tools like a CRM with territories, field operations and commissions features to support your sales team in the field and improve communication.

Doing this in HelloGrowthCRM

HelloGrowthCRM lets you track sales quotations as deals in a pipeline. A quotation sent last week appears at the 'quote sent' stage with a follow-up date, so you never forget to check back with your prospect. This helps ensure timely follow-up and improves your chance of closing sales.

For sales teams covering multiple regions, the platform offers territories, field operations and commissions, enabling field reps to log visits from their phones while managers monitor daily activity.

If you don’t have a dedicated sales manager, the Managed RevOps service assigns a revenue specialist to work your follow-up queue every week, keeping your pipeline clean and active.

Frequently asked questions

What is the main purpose of a sales covering letter? A sales covering letter introduces your quotation or proposal, summarises key points, and guides the recipient on what to do next. It clarifies your offer and encourages timely responses.

How long should a sales covering letter be? Keep it concise — ideally no more than one page. It should be clear, focused, and avoid unnecessary details.

Should a sales covering letter be personalised? Yes. Addressing the recipient by name and tailoring the content to their needs increases engagement and shows professionalism.

When should I follow up after sending a sales covering letter? Mention a specific follow-up date in your letter, usually about a week after sending. Use pipeline tools in a CRM to set reminders and track follow-ups.

Can I send a sales covering letter by email? Yes. Email is common. Make sure your subject line is clear and attach the quotation or proposal. The letter can be in the email body or as a PDF attachment.

Key takeaways

• A sales covering letter accompanies your quotation or proposal to explain and promote your offer.
• It should be clear, concise, personalised, and include next steps.
• Avoid common mistakes like vagueness, overloading details, or missing contact info.
• Use a CRM to track quotations as deals with follow-up reminders.
• Regular follow-up is critical to converting leads into sales.

Start managing your sales process better and never miss a follow-up by using HelloGrowthCRM. Start on the Free Forever plan (200 leads, no credit card).