[Home](./index.md) > [bitburner](./bitburner.md) > [NS](./bitburner.ns.md) > [relaysmtp](./bitburner.ns.relaysmtp.md) ## NS.relaysmtp() method Runs the relaySMTP.exe program on the target server. relaySMTP.exe must exist on your home computer. Signature: ```typescript relaysmtp(host: Host): void; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | host | [Host](./bitburner.host.md) | Hostname or IP of the target server. | Returns: void ## Remarks 0.05 GB ## Example ```js relaysmtp("foodnstuff"); ```