How can we improve WHMCS?

Hello,

It would be great to see an option on the client profile, when enabled ensuring that no emails at all are sent to the client's email including all system emails.

This is useful in cases where a client wants to keep their account but they do not have any active products/services. But as they have paid invoices it is not a good idea to remove the account so in this case the ability to enable a don't send emails option would be great.