Email recall functionality varies depending on the email service provider. In platforms like Microsoft Outlook, you can recall an email if both the sender and recipient use the same email server and the email has not been opened by the recipient. However, this feature is not foolproof and has a limited timeframe within which it can be executed. Gmail offers an "Undo Send" feature, which provides a brief window (up to 30 seconds) to recall an email after clicking the send button.