# Renew flow

Each automation flow can be either executed once for each subscriber that meets its conditions, or repeated, after established time period. You can establish that in the first step of creating a new automation, or change existing automation flow.

<figure><img src="/files/SZXuKovZ2GQjBurhsyDv" alt=""><figcaption></figcaption></figure>

The option you choose should make sense for a particular automation. For example, a notification from the Welcome message automation should be sent only once; there is no need to greet a new subscriber more than once. In the case of Abandoned cart automation, you can opt for repeating the automation flow, because we want to contact the subscriber every time he abandons the cart. &#x20;


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