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Sponsorship allows you to pay gas for the transaction instead of user, that enables a better conversion to claim because receiving the token becomes totally free for end user.
To enable sponsorship, you should select this option when setting up a campaign. The fixed amount per link will be secured from your wallet to cover gas. Usually it's 0.3 MATIC or 0.02 ETH depending on the network, but that amount can change dynamically because of the state of the network, so you could see the exact amount in the summary when creating links. Below are a few specific cases related to sponsorship that we want you to know about
As the amount that you secure to sponsor each link is fixed, we can only provide sponsoring the transactions when gas price is below 150 gwei.