> ## Documentation Index
> Fetch the complete documentation index at: https://help.lobstr.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Send only one message per seller with Leboncoin Auto Message Sender

> How Leboncoin Auto Message Sender avoids duplicate messages, and how One Message Per Seller skips sellers who delete a listing and post it again.

A seller deletes a listing and posts it again a few days later. To Leboncoin it's a brand new listing, with a new id and a new URL, so by default the [Leboncoin Auto Message Sender](https://www.lobstr.io/store/leboncoin-auto-message-sender) sends them your message a second time.

Sellers who get the same message twice tend to report it as spam, which puts your Leboncoin account at risk. **One Message Per Seller** stops that.

## How duplicate messages are avoided by default

Each Squid keeps track of the listings it has already messaged:

* A listing this Squid already messaged is **never messaged again**, even if you edit the message template in between.
* The skipped listing is **not billed** and does **not count** toward Max Results.

This check is per listing. A listing posted again is a different listing, so it gets the message.

## Turn on One Message Per Seller

<Steps>
  <Step title="Open your Squid">
    Go to your Leboncoin Auto Message Sender Squid and open its **Settings**.
  </Step>

  <Step title="Switch on One Message Per Seller">
    The toggle sits under your message template.
  </Step>

  <Step title="Save">
    The next run applies it.
  </Step>
</Steps>

From then on, a listing is skipped when this Squid has already messaged its seller on another listing. A skipped listing is not billed, does not count toward Max Results, and is left out of your results.

The seller is matched on their **Leboncoin account**, not on their pseudo: a seller who changes pseudo is still recognised.

## How to spot a skipped listing

Skipped listings are not in your results, so your export only lists the listings that were actually handled. To see which ones were skipped, open the **run logs**: each one shows `already got a message from this squid on another listing. Skipping (One message per seller).`

In your results, the `owner_id` column holds the seller's Leboncoin identifier of each listing that was messaged.

## What counts as already messaged

* **Only this Squid's messages.** Two Squids don't share their history: if you message the same area from two Squids, a seller can get one message from each.
* **Messages sent since October 2026.** lobstr.io started storing the seller of each message when this option was released. Messages sent before that have no seller attached, so for them only the per-listing check applies.

<Note>
  Turning the option off again doesn't erase anything: listings skipped while it was on can be messaged by a later run.
</Note>

## Related articles

* [Personalize messages in Leboncoin auto message sender](/guides/leboncoin/personalize-messages) — insert each seller's pseudo and listing title in your message.
* [Account Bans & Rate Limits — Leboncoin messaging](/safety/account-bans#what-are-the-limits-of-a-leboncoin-account) — batch and daily messaging limits to keep your account safe.


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