Plan the airdrop before you send it.
Paste the sending wallet and a list of address,amount rows. MultiSend checks every address, merges duplicates, finds which recipients still need a token account, and tells you exactly how much SOL the whole send will cost.
This is a planner. Do the actual sending with your own wallet or tooling.
2Recipients
One per line: address,amount. Commas, semicolons, tabs or spaces all work; a header row is skipped. Amounts are in whole tokens (e.g. 12.5), not raw units.
Validation
Every address is decoded from base58 and must be exactly 32 bytes. Amounts must be positive and fit the token's decimals. Duplicate addresses are merged into one row and flagged so you can see it happened.
Token accounts
For a token send, each recipient's associated token account is derived and looked up on-chain. Missing ones have to be created by the sender, which costs rent per recipient.
Batches
About 20 SOL transfers or about 8 token transfers fit in one transaction. Each transaction pays a 0.000005 SOL base fee. Priority fees, if your tool adds them, come on top.
Rent numbers are live
Rent figures come from the network's current rent-exempt minimums, not a hard-coded constant. Solana cut rent in 2026, so a new token account costs less than the old 0.00203928 SOL.
Sending it
Take the cleaned CSV and batch plan to the wallet or multisend tool you already trust, run a tiny test batch first, and read every confirmation. MultiSend never connects to a wallet and never asks for a signature.