Group text messaging

Send a group text message

1. Open Messages and tap the Compose button .
2. Enter the names or tap the Add button. to add people from your contacts.
3. Type your message, then tap the Send button .

Send a group text message on your iPhone or iPad

Types of group messages

The three types of group messages that you might see are: group iMessage, group MMS, and group SMS. The Messages app automatically chooses the type of group message to send based on you and your recipients' settings, network connection, and carrier plan. For example:

• If you and your recipients are using Apple devices and iMessage is turned on, then the group message is sent as an iMessage.
• If you send a group message to people who aren't using iMessage, then the message is sent as an MMS or SMS message. All responses in a group SMS are sent as individual text messages and the recipients can’t see the other responses from the group.

If --> Can't mute group messages - Messages Help - Google Support

If you have made a group in your contacts app then you may have to use third-party app to send messages to that group.