business proposal email subject line examples

When crafting a business proposal email, the subject line is crucial for capturing the recipient’s attention and encouraging them to open your message. By using a compelling subject line, you can increase the chances of your proposal being read and considered. In this article, we will provide you with a comprehensive collection of business proposal email subject line examples that you can use and customize to fit your specific needs. From concise and attention-grabbing to informative and persuasive, our examples will help you create subject lines that stand out and make a positive impression.

Crafting Effective Business Proposal Email Subject Lines

When sending a business proposal email, your subject line is crucial in enticing the recipient to open and read it. Here’s a breakdown of the best structure for an impactful subject line:

Keep it Concise: Aim for a subject line between 40-60 characters. This ensures it doesn’t get cut off in the recipient’s inbox and conveys your message efficiently.

Use Action Verbs: Start your subject line with a strong action verb that highlights the purpose of your proposal. Verbs like “Propose,” “Submit,” or “Request” convey a clear call to action.

State Briefly: Succinctly state the main objective of your proposal. This could be the name of the project, a specific solution, or a particular service you’re offering. Use keywords relevant to the recipient’s interests.

Consider Urgency (Optional): If appropriate, indicate that the proposal is time-sensitive or requires a prompt response. Phrases like “Immediate Action Required” or “Urgent Proposal” can create a sense of urgency without being overly aggressive.

Proofread: Always proofread your subject line carefully for any errors in grammar, spelling, or punctuation. A polished subject line reflects professionalism and attention to detail.


  • “Proposal for Marketing Campaign for Your Brand”
  • “Request for Proposal: Website Development Services”
  • “Submit Proposal: Cloud-Based Enterprise Resource Planning Solution”
  • “Immediate Action Required: Proposal for Business Expansion”

By following these guidelines, you can craft effective business proposal email subject lines that grab attention, convey purpose, and increase the likelihood of your proposal being opened and considered.

7 Unique Business Proposal Email Subject Lines for Different Occasions

Tips for Writing Business Proposal Email Subject Lines

  • Keep it short and to the point: Your subject line should be no more than 50 characters long. This will ensure that it is easy to read and understand, and that it will not be cut off by email clients.
  • Use keywords: Include keywords that are relevant to your proposal in your subject line. This will help your email stand out in the inbox and make it more likely to be opened.
  • Create a sense of urgency: Use words like “urgent” or “time-sensitive” in your subject line to create a sense of urgency and encourage the recipient to open your email immediately.
  • Personalize it: Include the recipient’s name in your subject line to make it more personal. This will show that you have taken the time to learn about their business and that you are interested in working with them.
  • Use a strong call to action: End your subject line with a strong call to action, such as “Request for Proposal” or “Schedule a Meeting.” This will tell the recipient what you want them to do and make it more likely that they will take action.

FAQs about Business Proposal Email Subject Line Examples

What are some effective business proposal subject lines?

Effective subject lines are concise, specific, and attention-grabbing. Consider using keywords that reflect the proposal’s value and industry, as well as action-oriented verbs and numbers.

How long should a business proposal subject line be?

Keep it brief, around 5-10 words or less than 50 characters. This ensures that it’s easy to read on both desktop and mobile devices.

Should I include my company’s name in the subject line?

Including your company’s name can increase recognition, but only if it’s well-known. If your company isn’t recognizable, consider leaving it out to focus on the proposal’s value.

How can I make my subject line stand out?

Use personalization by addressing the recipient by name and customizing the line based on their industry or pain points. Consider using a unique keyword or phrase that encapsulates the proposal’s unique offering.

What should I avoid in a business proposal subject line?

Avoid overly generic, clickbaity, or vague subject lines. Don’t make false promises or use spammy language. Avoid using all caps and excessive punctuation, as they can appear unprofessional.

Is it okay to include a call-to-action in the subject line?

Yes, a clear call-to-action (CTA) can encourage the recipient to open the email. However, keep it brief and avoid using pushy language.

Can I use emojis in the subject line?

It’s generally not recommended to use emojis in business proposal subject lines. They can be distracting and unprofessional, and may not be displayed correctly on all devices.

Cheers for now

Thanks for dropping by and giving these business proposal email subject line examples a read. If you’re still having trouble crafting the perfect subject line, don’t sweat it. Just bookmark this page and come back to it later. I’ll be here, ready to help you make a great impression on your potential clients. In the meantime, feel free to explore our other resources on writing effective business proposals.