-Update 24th June-

We have had no further reports of this issue reoccurring and we believe the issue to be fully resolved.

-Update at 17:30-

We believe we have resolved the issue, but will continue to monitor this issue before providing a full clearance.

-Original Message-

N4L are aware of current issues emailing Slingshot and Callplus email addresses at the moment. We are working on a resolution and we believe we will have a solution very shortly.  We will update once we have further information.