As an ecosystem, Telegraph validators will be rewarded with a percentage from the fee of each successfully transmitted message. This reward is also accompanied by a mined reward of Telegraph tokens. Telegraph's native token is a no-premine token that is minted along with each successful message transmission and split amongst all participating nodes. These rewards will incentivize node operators to continue their maintenance/support for the Telegraph ecosystem.
Each token would be mined within the blockchain where the transaction is confirmed. Meaning that a bridge transfer from ETH to MATIC would mint a small amount of Telegraph tokens onto the MATIC blockchain. Additional services are in development to make the collection and management of tokens across chains easy to work with.