Postman: How to delete/clear postman environment variable at run-time

Ok - so this does it.

postman.clearEnvironmentVariable("key");

Sandbox API pm.environment.unset(variableName) also allows to do that.

In case is you want to clear all environment variables at once - you might want to do: pm.environment.clear().

This will clear all your environment values.

Refer: https://learning.postman.com/docs/postman/scripts/postman-sandbox-api-reference/#pmenvironment