Service Alert: Notification of upgrade for CalDAV users

On the evening of Thursday 26th May we will be upgrading all our MailCore Pro CalDAV servers to a new version. This includes several enhancements for those using our services with calendaring apps including improved invitation support and CalDAV-compliant calendar sharing that can be administered from with apps (subject to support). Performance is also greatly improved. No action is required on your part or your customers to receive these updates and we do not anticipate any downtime. A further advisory will be sent when the upgrade is completed.