# Email delivery

### Sending a loyalty card to clients via a personal link

If you already have a customer database, you can easily invite them to install a loyalty card. Simply send a personalized email or SMS with a unique installation link.

Before doing so, make sure to add customers to the system and issue their loyalty cards — this will generate individual installation links.

More details here [How to create and send a mailing. Send sms and emails to your customers. ](https://docs.boomerangme.cards/mailings-and-other-services/how-to-create-and-send-a-mailing)