Check on Send is a free Chrome extension that allows you to monitor, manage and track your emails before sending them.

This tool will alert you before you send an email to the wrong recipient, which is a common mistake. To avoid this, you need to enable the extension in your browser's settings.

How can I send emails to the wrong people?

If you have a domain that you want to avoid and you have a recipient who has a similar domain, the extension will automatically warn you about it before you send an email.

You can configure each domain and the mappings between them in the extension.

How can I prevent sending emails to the wrong people?

You can disable the automatic warning to avoid sending to the wrong person.