I have a test site that is a clone of an OJS 3 journal. We use it to test upgrades and new plugins. Before any test I clone the production database. Sometimes the test server sends out reminder emails for things that were due during the last cloning, that are long since handled in production, which confuses referees and authors. Is there a configuration switch that simply turns off email? The solution I’m using now is to activate SMTP but with settings that won’t work, which isn’t very pretty.