When you send a message to your Contact while they're offline, it's necessary to have a Messenger URL in your email notification so they can easily jump back into the chat.
This Messenger URL is also used when Contacts want to access an older Conversation. As part of the re-authentication process, they will receive a token via email. The Messenger URL link in these emails will then take them to your website.
Please provide the URL to your website in your Widget Editor under the tab "General" > 'Messenger URL':
Note
Please provide a link that returns a plain 200 response code. A URL
that redirects several times is not compatible with our validation
process.