I am on a Samsung S-21 and cannot duplicate the solution per the instructions below. I have one person in a text conversation and want to include a 2nd person on a follow up message. The one person is not a "named group". This statement makes no sense: "the number of people in your chat is substituted for not naming your group". Searching my contacts for "one" or "1" does yield anything other than matches for those variables. I'm missing something!

I agree with those who said the solutions don't work. It isn't working for my device. The ability to add & remove people to an existing chat is pretty important.
We shouldn't have to create a whole new chat just to add or remove one person to the recipient list from an existing text thread. Please fix this quickly.

I'm on an Android. The comment from Anonymous about the number of people as the name doesn't work, at least for me.
You have to rename the group from the conversation by selecting the name(s) at the top. Then to actually add or delete recipients, start a new conversation and use the search to find the name you just created. Once there, you can add or delete contacts in the existing conversation.
It also appears you have to use the search function because the new name doesn't appear in the Contacts list. I don't know how to get a list of these edited groups. It's not in the people or groups list.
IMHO this is an absurdly complex and user snide interface.

Y'all this has been answered. My thanks to those that responded and offered instruction!

Anonymous commented · August 24, 2020 5:46 AM
Just in case they are folks who are still trying to figure this out, here is how you do it. Do a search in your contacts for the name of your group. If you didn't name your group don't worry, the number of people in your chat is substituted for not naming your group. Enter that number in your search, now will be able to see the icon to add more people to your chat. Hope this helps

AND MORE RECENTLY

Timothy P Cashin commented · February 13, 2022 4:02 AM
If you customize the name of your group MMS you can do this: tap new message icon, search for your group MMS name, select it, and you should see icon to add members. Only works if you've customized the group MMS name. Works for single-contact threads as well but you have to start bt tapping new msg icon, then select the contact, and tap icon to add members. Option to add does not appear if you simply open an existing thread. Agree this should be an added feature!!!

If you customize the name of your group MMS you can do this: tap new message icon, search for your group MMS name, select it, and you should see icon to add members. Only works if you've customized the group MMS name. Works for single-contact threads as well but you have to start bt tapping new msg icon, then select the contact, and tap icon to add members. Option to add does not appear if you simply open an existing thread. Agree this should be an added feature!!!

Ridiculous that this is not possible. And the anonymous tip below from Aug 24 2020 does not work.

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you can use Google messenger add a contact and then reset textra as your default

TEXTRA - this option to be able to add/delete contacts to a group thread was first asked of you by Armando shared this idea October 01, 2014 - OCTOBER 2014 FFS!

The group rename option for adding an individual to a group chat (mentioned below) does not work. This function needs to added.

If you forward the message you can add people to the thread, but you do not get all of the porevious messages.

This has been a requested feature literally for years. I can't imagine why it hasn't been added.

Wow, and I paid for this app. This is an important feature that is needed.

Just in case they are folks who are still trying to figure this out, here is how you do it. Do a search in your contacts for the name of your group. If you didn't name your group don't worry, the number of people in your chat is substituted for not naming your group. Enter that number in your search, now will be able to see the icon to add more people to your chat. Hope this helps

Is anyone at Textra listening?

This is a ridiculously basic feature that I just realized I can't do.

We should be able to add and remove people in an existing conversation without having to restart a new thread.
(I've been a paid subscriber for over 4 years and have told so many others about Textra.)

Looking for this feature too.

Just was looking to do this. This feature is needed asap! Seems like it will never get added

Add this feature!

Yes, this is needed

Please add this feature! Not sure why this got left out!