Why I started keeping a buyer list
I sold a stroller to a mom who mentioned in the pickup conversation that she also needed a high chair. Two weeks later I listed a high chair and had no way to reach her - Marketplace does not surface past buyers to you when you post something new. I had lost a warm lead simply because I did not write anything down. That was the moment I started keeping a list.
The list is nothing sophisticated. It is a notes app entry per buyer: their name, what they bought, the date, and anything they mentioned wanting in the future. That is the entire system, and it works because it captures information Marketplace itself throws away the second a transaction closes.
What to record after every sale
- Buyer's name and the Marketplace/Messenger handle you used to talk to them.
- What they bought and the category (baby gear, furniture, electronics, etc).
- Anything they mentioned wanting next, even offhand - this is the most valuable line in the whole record.
- The date of the sale, so you know how recent the relationship is before reaching out again.
How to actually use the list
The list only pays off if you check it before posting, not after. When new inventory comes in, scan the list for anyone who mentioned wanting that category, and send a short direct message before the listing goes public or right when it does: 'Hey, I remembered you mentioned needing a [item] - just listed one, wanted you to see it first.'
This message converts at a much higher rate than a cold listing view, because it is personal and because you are giving them a head start over strangers scrolling Marketplace. It also reads as thoughtful rather than salesy, since you are referencing something they actually said.
| Approach | Response rate (in my experience) | Effort per sale |
|---|---|---|
| Post publicly and wait | Baseline - depends entirely on search visibility | Low, but no relationship built |
| Message past buyers who mentioned the category | Noticeably higher - warm context beats a cold scroll | A few minutes per message, list already built |
Where this breaks down
The list is only as good as your consistency in updating it. If you skip the note-taking step for a month of sales, you lose that entire month of potential repeat business permanently - there is no way to reconstruct it from Marketplace's own history in a useful way. Treat the two-minute note as part of the sale, not an optional extra.
Short, practical drops on sourcing, pricing with comps, listing copy, and safe meetups. No spam, unsubscribe anytime.
Frequently asked questions
Do I need special software to keep a buyer list?
No. A notes app, a spreadsheet, or even a physical notebook works. The value is in the habit of recording it after every sale, not the tool you use to store it.
Is it okay to message past buyers about new items?
Yes, as long as the message references something they actually said or bought and is not sent repeatedly to people who never respond. One relevant message when you have a genuine match is welcome; repeated unsolicited messages read as spam.
How many buyers do I need before this is worth doing?
Start after your very first sale. The habit costs two minutes and compounds - by the time you have 20 to 30 past buyers, the list starts generating messages back to you unprompted as people remember you sell in their category.
What if a buyer never responds to my follow-up message?
Leave it there. Do not follow up more than once on the same item. Update their entry with the new date and move on - not every past buyer will convert every time, and that is fine.
Last reviewed by Nicole on August 6, 2026
