There you are, happily typing away, when all of a sudden you have to jump into a new message box that says it’s from their email instead of the main contact. To do this, tap their name at the top of the iMessage bar, which will take you to the linked email address’ contact card.
Sometimes, people can accidentally leave their iChat on through OSX after they’ve already started texting you from their phone. If someone is telling you that your email is showing up in their text log instead of the normal contact, there’s one setting you can check on your end which might be causing the trouble. Also note that as long as you’re logged in from this email on an OSX linked account, iChat will automatically hold on to that information as a part of your laptop or desktop’s credentials.
The only place this information can be removed is from the iPhone you’re working from in the iMessage portion of the Settings application.
If you’re not signed in to iMessage, enter your Apple ID and password, then click Next.
How do I fix my little Apple ecosystem, iPhone (8.1) and Mac (Yosemite), to not associate any email addresses with my identity?
If your friends, family, or colleagues are telling you that your text messages are coming from your email address instead of your phone number, the culprit is likely in your iPhone settings! Scroll to the "Start New Conversations From" list, and select the default address you would like your messages to come from (likely your phone number.).
Also people who receive my messages say that sometimes they come from my email (the @gmail.com below) instead of my phone #.
My initial solution in order to fix these common phone problems is usually to wait until the issue is so severe or annoying that I have to do something about it. If you’ve found yourself past the point of no return, asking “Why are my texts messages coming from my email address?”, you are far from alone.
Based on the dozens of pleas from people across the internet, ranging from desperate to furious, this happens pretty often and seemingly without cause. Under “Send & Receive” you should see a section labeled “Start New Conversations From.” Make sure your phone number has a checkmark next to it. Also, can't go wrong with the my personal favorite “scream and cry.” While it won't fix anything, it will definitely feel very good at least momentarily. If the problem was with your number, you can ask your friends to do the same after you reset your phone to stop sending messages through your email address.
I'd really prefer to not have them come from my email address, because then any replies will goto both my phone and my iPad - which I don't want.
With optional read receipts, it’s own App Store, and support for threaded conversations in iOS 14, it’s come a long way. You may also find that if you’ve changed your mobile number, you’ll need to get this switched over via this process, too.
As with any tweaks you make to iOS, you’ll need to head into your Settings menu, rather than messages itself. Here, you can set your iMessage up to only work for email addresses, phone numbers, or any mix of the two.
These devices will need to be approved before they’ll appear on this list, so grab your iPad or Mac first.