Yes. You can save your contacts in SMS account. To do so, follow the steps below:

  1. Login to SMS account, click on 'Manage Items' > 'Manage Groups'
  2. Click on '+new' to create a group. Enter the group name and save
  3. Click on the 'eye' icon in the actions bar of the group and a new page opens.
  4. You can add a single contact, multiple contacts or import contacts from a file and 'add contact'