1. Create

Using Trombone is as easy as 1, 2, 3. First you need to create a group. To do so, you need to send a text in the following format:
create #channelname
After composing this, send it to +447797880420

2. Subscribe

After creating your group, you can get your friends, customers or members to subscribe by texting:
from their own mobile phones to +447797880420

3. Send

To send messages to your group, use the following format:
#channelname Get 30% discounts when you purchase at our store with the coupon code: NEW11
and send it to +447797880420