If the address you send to is a deposit address of another Strade account, the withdrawal does not go to the blockchain. It is completed inside Strade at once.

Make it as a normal withdrawal: How do I withdraw crypto? The same confirmation codes are needed.
After you enter the address, the form checks it. For a Strade address it shows Internal transfer to a Strade account: instant, no network fee, the network fee is 0 and Amount to receive equals the amount you enter.
On networks with a memo, for example Stellar, all Strade accounts share one deposit address. Enter the receiver's address and their Memo (tag) from their Receive page. Without the memo, or with a memo no Strade account has, the withdrawal is not accepted and nothing is sent: check the memo with the receiver.
On TON the same address can be written in several ways (starting with UQ, EQ or 0:): any of them is recognised. When you send a TON token, such as USDT, the receiver's token wallet address for that token also works if it has already received deposits on Strade. The surest is the address from the receiver's Receive page.
If the address or the fee changes between the check and your confirmation, you see The transfer type or network fee has changed: check the new details and click Send again.
In your history it is shown as Internal transfer (outgoing), and the receiver sees Internal transfer (incoming). There is no transaction hash.
The receiver gets the full amount you entered: no network fee is withheld.
Such transfers are not checked manually, but they count towards your withdrawal limits, and they are not available while your withdrawals are blocked or suspended.
A completed transfer cannot be cancelled. Only the receiver can send the funds back.

To move funds between your own Funding and Spot wallets or your sub-accounts, use Transfer instead: How do I move funds between my accounts?

Stay safe: Strade support never asks for your password, 2FA codes or seed phrase. Strade never asks you to send funds to "verify" or "unlock" your account.

Sending to another Strade user