SMS setup
You can set up an SMS gateway so Mambu can send manual and automated SMS notifications to clients, groups, or credit officers.
Supported providers:
- Twilio
- Infobip
- None (disabled)
If you need to integrate a different SMS gateway, please contact Mambu Support.
Permissions:
- View settings: Users with administration visibility or template permissions (for example, View Administration Details, Create Templates, or Edit Templates) can view the SMS settings.
- Save settings: Admin permission is required to change and save SMS settings.
Create an SMS gateway account
Create an account with your chosen SMS provider and collect the credentials they require (for example, Account SID and Auth Token for Twilio; base URL, username, and password for Infobip).
Configure the SMS gateway in Mambu
- Go to Administration > SMS > Settings.
- In SMS Gateway, select your provider: None, Twilio, or Infobip.
- Enter the required fields for the selected provider (see below).
- Select Save Changes.
Notes:
- Selecting None disables SMS for your organization. Manual and automated SMS will not be sent, and send options may be hidden in the UI.
- Password is required on first setup. On later edits, leaving the password blank keeps the existing password.
Provider fields
Infobip
| Name | Description | Required |
|---|---|---|
| Base URL | Your Infobip API base URL, for example xxxxx.api.infobip.com. | Yes |
| Account Username | Your Infobip account username or API user, as provided by Infobip. | Yes |
| Account Password | Your Infobip account password or API key (per your Infobip setup). | Yes |
| Phone Number | Sender phone number configured with Infobip (From number). | Yes |
Twilio
| Name | Description | Required |
|---|---|---|
| Account Username | Your Twilio Account SID (used as username). | Yes |
| Account Password | Your Twilio Auth Token (used as password). | Yes (on first setup; leave blank to keep existing) |
| Phone Number | Your Twilio From phone number (E.164 format recommended). | Yes |
Manage SMS templates
You can manage automated SMS templates under Administration > SMS > Templates. Templates determine triggers, recipients, and message content. SMS sending requires that the SMS gateway be enabled and correctly configured.
Test and troubleshooting
-
Test send: From the SMS Settings page, you can send a test SMS after selecting a provider and entering valid settings. This validates connectivity and credentials by attempting to send a message; it does not guarantee final delivery (provider routing, filtering, or handset issues may still affect delivery).
-
Common issues:
- Invalid credentials (wrong username/token/password) or base URL (Infobip) cause sends to fail.
- None selected as provider prevents sending.
- Network/firewall blocks between Mambu and your SMS provider can prevent connections.
- Missing or invalid sender number with your provider can cause messages to be rejected.
If sends fail, verify your provider credentials, base URL (Infobip), sender number, and any required allowlisting with your provider. Contact Mambu Support if you need help diagnosing configuration issues.
If none of the above helps, see this page