Sure,
Customization --> Print Templates --> Guest Manager Print Templates --> SMS Receipt
and you can use all that variables
Variable Description Example
| {$u.username} | User account name | 12345678 |
| {$u.password} | User account password | 87654321 |
| {$u.enabled} | Non-zero if the guest account is enabled | 1 |
| {$u.role_name} | Role assigned to guest account | Guest |
| {$u.schedule_time} | Time at which the guest account will become active | 1155772123 |
| {$u.expire_time} | Time at which the guest account will expire | 1155858523 |
| {$u.expire_postlogin} | Lifetime of the guest account login in minutes after login | 120 |
| {$u.visitor_name} | User’s name | Susan Guest |
| {$u.visitor_company} | User’s company name | Acme Sprockets |
| {$u.sponsor_name} | Sponsor’s name | John Sponsor |
| {$u.custom_field} | Custom fields attached to the account | |
| {$action} | Action taken on account (create, delete or edit) | create |
| {$source} | Source of account action (create_user, reset_password, etc.) | create_user |
| {$result.error} | Non-zero if an error occurred while creating the guest account | 0 |
| {$result.message} | Message related to the account creation | |
| {$timestamp} | Time at which the receipt was generated | 1155752000 |
| {$site_ssid} | SSID of the wireless LAN | Aruba |
| {$site_wpa_key} | WPA key for the wireless LAN | |