CyberzSOC

Important information about the future of Mail Check The NCSC has made the decision to stop providing DMARC Aggregate Reporting on 24th March 2025. Mail Check users requiring DMARC Aggregate Reporting will need to switch to an alternative tool. This decision gives NCSC the opportunity to expand the Mail Check service to any UK organisation whilst significantly reducing cost and complexity. It also creates space to develop new services in the future. Mail Check was one of the first Active Cyber Defence services to be built, with development starting back in 2017. Over the last 7 years, there has been fantastic progress in the adoption of DMARC across government, the public sector and wider industry enabled by Mail Check.