Unfriendly eBay sent this to me.
Oops. We weren’t able to send your message to XXXshop, because the email address you used to send this message, XXX@gmail.com, isn’t linked to your eBay account.
To keep eBay safe, we need you to send messages from a registered eBay email address. This will prevent your messages from being blocked in the future.
I have no wish to record my gmail account with anybody other than Google. It’s part of my Spam identification mechanism. I give every supplier their own email address for me to track down misuse, such as passing on details to a Spam generator. It has worked, to the embarrassment of a major software company.
Does it really make eBay any safer if it blocks unregistered addresses? They know who I am.