Small sellers put a card in every box because everyone says to. Some of those cards genuinely bring buyers back. Others read as an obligation, and a few actively cost sales. The difference is fairly predictable.
What the insert is actually doing
Opening a package is a short window when a buyer is paying full attention to you. An insert either uses that window to give them something or to ask them for something. Gratitude cards with gold foil detailing, the kind small business supply catalogs like https://outus.net/ sell in packs of fifty, work because they are the first kind.
Thanks that sound like a person
“Thank you for supporting my small business” is printed on millions of cards, and it still works, because it is true and specific about the relationship. What kills it is when the same card immediately demands a five-star review in the next sentence.
The review ask has a right size
Asking for feedback is fine. Asking for a specific star rating reads as pressure, and on most marketplaces it violates the terms of service. Offering a discount in exchange for a review is a policy violation nearly everywhere and can end a selling account.
What buyers report keeping
- Care instructions for the specific item, especially anything washable or hand-finished.
- A handwritten line with the buyer’s first name, even one sentence long.
- A small usable extra, such as an extra button, a sticker, or a spare part.
- A card that states what happens if something arrives damaged.
- A note about who made it, in two sentences and not a life story.
What gets thrown out immediately
Glossy multi-page catalogs from a one-person shop, coupon codes that expire in seven days, and anything with a QR code and no explanation of where it goes. Stickers of your logo are also less loved than sellers assume, unless your logo is genuinely something people want to display.
Handwriting scales worse than you think
At ten orders a week, a handwritten line is charming. At sixty, it becomes the reason you dread packing. Preprinted cards with one handwritten name split the difference and stay sustainable through a holiday rush.
Do not include anything that can spoil the product
Scented cards next to food items transfer odor. Loose glitter ruins textiles and irritates people who have to clean it up. Anything with a sharp edge can mark a soft product in transit.
Track whether it works
Add a discount code that exists only on the insert, then count how many times it gets used over three months. If the answer is two, the card is a courtesy and not a marketing channel. Price it as one.
The one-line rule
If the card only benefits you, it is advertising. If it also benefits the buyer, it is service, and service is what makes someone order twice.