There are reasons to stop or delay emails being sent. This means it is possible to forget that email sending has been paused and this should be checked if you find that emails are not being received by patrons.
You can do this by going to the listener and looking for the icon Pause Sending Email. If the button says this, then emails are currently being sent from the listener. Instead, if the same button says Resume Sending Email, then click it to resume sending emails and toggle the state of the button. In other words, the correct state for this button to ensure that emails are being sent is Pause Sending Emails.
After making sure it says 'Pause Sending Emails', you may want to click the button that says 'Send All EMail' so that any backlog begins to be sent. (Also make sure that the listener is started - if it s stopped it will not send emails either).
