HTC One M8 for Windows - Manual (Page 111)

4. Tap the box that says type a text message, and then enter your
text.
5. Tap to send it.
When adding recipients, you can also:
§ Tap , and then select a contact group. The Group text option (if
turned on in the app's settings) can help keep replies in one thread
when you're texting with a group of people. Replies are sent as
multimedia messages instead of text messages.
§ Begin typing a person's name in the To box, and then tap a
matching contact name.
Sharing pictures, videos, and more in a message
You can send a multimedia message by attaching a picture, a video, and
more to a text message.
Before sending multimedia messages, make sure that this service
is included on your data plan.
1. On the Start screen, tap .
2. Tap to create a new message.
3. In the To box, fill in the recipient's name or mobile phone number.
4. Tap and then choose an attachment type. To remove an
attachment, press and hold the attachment and tap remove.
5. Enter your message using the onscreen keyboard or tap to use
voice recognition.
Messaging 111