Our MMS carrier partner in the United States is conducting a planned maintenance from 12 October 2026 at 21:00 PDT until 13 October 2026 at 02:00 PDT. During the maintenance window, there could be intermittent delays delivering MMS to and from United States handsets via United States short codes.

Twilio is conducting a planned maintenance from 30 September 2026 at 20:00 PDT until 01 October 2026 at 00:00 PDT. During the maintenance window, there could be intermittent delays or failures delivering SMS and MMS to and from United States and Canada handsets via subset of long codes, short codes and toll free numbers.

In order to maintain our service and quality levels, we would like to inform you that we are performing essential maintenance on the platform. Please circulate these details to all relevant stakeholders within your business.

Access to all Medallia services, including Medallia’s survey mechanisms, may be impacted during this time.

Please contact Medallia Support via https://help.medallia.com if you have any questions or concerns related to this.

Regards,

Medallia Support

Over the weekend, Medallia received notification about a series of security concerns from Citrix, a well-established vendor used by Medallia for network load balancing.  As a precautionary measure to protect our systems and client data, Medallia reacted immediately to temporarily restrict access to affected environments at approximately 10:30 am PT while deploying the necessary updates. Medallia restored service to data centers on a rolling basis over the following hours.

Based on our investigation and monitoring to date, we have identified no evidence that client data was accessed or compromised as a result of these vulnerabilities. Medallia continues to monitor its environments and evaluate relevant guidance from Citrix as it becomes available.

Services in your environment have now been restored. As a result of the interruption, your IT teams may need to restart or retrigger  integrations or data transfers with Medallia.  Please open a ticket with Medallia Support at help.medallia.com if you have any questions or concerns.

For further details about the Citrix notification, please see https://www.cisa.gov/news-events/alerts/2026/09/27/critical-zero-day-vulnerabilities-exploited-citrix-netscaler-adc-gateway.

We appreciate your patience and understanding, and apologize for the disruption this may have caused to your organization.

Regards,

Medallia Support

Twilio is conducting a planned maintenance from 23 September 2026 at 20:00 PDT until 24 September 2026 at 00:00 PDT. During the maintenance window, there could be intermittent delays or failures delivering SMS and MMS to and from United States and Canada handsets via subset of long codes, short codes and toll free numbers.

The AT&T network in the United States is conducting an emergency maintenance from 21 September 2026 at 20:00 PDT until 22 September 2026 at 00:00 PDT. During the maintenance window, there could be intermittent delays delivering MMS to and from AT&T United States handsets.

We are aware of the short notice and are working with our Carrier Partners to provide earlier notification where possible.

The T-Mobile network in the United States is conducting a planned maintenance from 21 September 2026 at 19:00 PDT until 22 September 2026 at 04:00 PDT. During the maintenance window, there could be intermittent delays delivering SMS and MMS to and from T-Mobile United States handsets when sending via long codes and short codes.