---
title: "Why are emails to eBay marketplace customers failing to send?"
slug: "why-are-emails-to-ebay-marketplace-customers-failing-to-send"
description: "If you communicate via email with eBay marketplace Customers in Gladly, email replies to eBay marketplace could bounce if your company domain is not allowed by eBay. Visit Gladly Help Docs to learn more."
updated: 2024-12-17T05:03:01Z
published: 2025-01-30T20:01:56Z
---

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

# Why are emails to eBay marketplace customers failing to send?

If you communicate via email with eBay marketplace Customers in Gladly, email replies to eBay marketplace could bounce if your company domain is not allowed by eBay. Incoming marketplace email subject lines usually follow this format below.

> ***CUSTOMEREBAYUSERNAME has sent a question about item #, ending on DATE TIME - PRODUCTLISTINGTITLE***

The failed delivery error will say, "Your message to CUSTOMEREBAYUSERNAME was blocked because it wasn't sent from your registered email address." If this occurs, contact eBay support and ask them to add your domain to their allowlist.