post https://api-sandbox.coinflow.cash/api/utils/send-solana-tx
Use Coinflow's battle tested ⚔️ Transaction Sending (The same system we use to send our own transactions).
This endpoint sends a fully signed Solana transaction with retries and stable RPC servers.
This is helpful during periods of network instability where the solution is to use better private RPC servers,
retry transactions multiple times.