Members can send messages to each other through eBay. We encourage open communication between our members but we don't allow our members to use these options to send spam, offers to buy or sell off eBay, threats, profanity, or hate speech. We also don't allow members to exchange email addresses or links that do not directly help buyers and sellers complete a transaction on eBay. 

Make sure you follow these guidelines. If you don't, you may be subject to a range of actions, including your messages being blocked, limits of your buying and selling privileges and suspension of your account.

The above is from Tazz's link, thanks Tazz 🙂

I post links too, but I check them, just to make sure they are still current, at the time of the post 🙂

particularly as a lot do not seem to be working right now.