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# How to buy an SMS sender number and set up auto reply SMS messages?

AVADA support one default sender number. You can also buy SMS sender in AVADA to flexibly use to send your text messages.

**Step 1:** Go to **App > Settings > SMS**

**Step 2:** Click **Buy a number** and select the type and select the number to buy

![](https://storage.crisp.chat/users/helpdesk/website/b66870a37c890800/kcgeo7f_mck759.png)

![](https://storage.crisp.chat/users/helpdesk/website/b66870a37c890800/rkortnu_kjnspl.png)

**Step 3:** Select default sender

If you select a number as default sender, all the SMS you created later will auto assign that number as sender. You can always change SMS sender in SMS content editor.

![](https://storage.crisp.chat/users/helpdesk/website/b66870a37c890800/e9rf4e9_90r20m.png)

If you don't want to use any number anymore, press **Release Number** and confirm

**Step 4:** **Set AUTO REPLY MESSAGE** to auto reply when customers reply to your messages with special keywords

![Set AUTO REPLY MESSAGE](https://storage.crisp.chat/users/helpdesk/website/b66870a37c890800/dirnjcz_1jy3g44.png)

Enter the content for the message > click **Save**

![Set AUTO REPLY MESSAGE](https://storage.crisp.chat/users/helpdesk/website/b66870a37c890800/bvrqjts_ssrfkf.png)