Just wondering about the 'privacy' features of iMessage, especially when texting shops, businesses or adverts. Say there's a Marketplace listing and I texted the seller (who just so happens to use Apple). If I text him/her, will they see my iMessage email address? What if they added you as a contact or saved your number on their phone? It's especially concerning if your Apple ID/iMessage email address is 'firstname.lastname@icloud.com' or something revealing like that. I've had some experiences when I could see my colleague's iMessage address even though I haven't saved their contact on my phone - but asking here in case anyone can really confirm this and if there is a workaround, apart from, well, using a non-descript iCloud address? Thanks!