# By purchase link
# Use case
The integration by purchase link should be used when the Pledg solution cannot be integrated at all in the merchant payment page.
The customer then clicks on the purchase link and is redirected to the Pledg payment funnel.
Technically, it can be assimilated to an integration by redirection with the following differences:
- The link is not generated from the merchant payment page but from the dashboard or by API
- The customer is not redirected to the Pledg payment funnel from the merchant payment page, but from an email or an SMS sent by Pledg