Compliment slips are small sheets of paper that are used as a way to include a brief, handwritten note or message along with a mailing or package. They are typically used in a business setting to add a personal touch, such as a thank-you note or a brief message of introduction. They can also be used to provide additional information or instructions to the recipient. Some companies also use them as a marketing tool by including their contact information and branding on the slip.

The purpose of compliment slips is to provide a personal touch to customers and to make a good impression on the recipient. They are often used in a business setting to add a polite and professional touch to mailings, packages, or other types of correspondence.

The content of a compliment slip can vary depending on the purpose of the correspondence and the relationship with the recipient.

Some key elements that are commonly included are:
The sender's company name and logo
The sender's contact information, such as an address, phone number, and email address A brief message or note, such as a thank-you, an introduction, or additional information or instructions
The recipient's name and address (if the compliment slip is being used in conjunction with a mailing or package)

It is important to keep the message short, concise and polite. It is also good to proofread the message before sending it, to ensure that it is grammatically correct and free of errors.

A compliment slip is a great way to keep your name in front of a client's mind. When writing a note to a client, you can't risk using a blank piece of paper that can be easily forgotten or lost. A compliment slip should reinforce your brand and ensure your contact details are visible in hand, should a client wish to contact you.

The appropriate size for a compliment slip depends on the preference of the individual or business using them. However, traditionally compliment slips are small, rectangular pieces of paper that can easily be included with a letter or package, and have a size of 210mm x 99mm (8.5 inches x 3.9 inches). This size is appropriate for most situations as it allows enough space to include a message or company information while still being small enough to be easily included.