Mimecast should be compatible with 8.0.0, but the kibana constraint only allows for 7.x. https://github.com/elastic/integrations/blob/5a2d68ea7a641f6c58de12f9d3b9becb7a7e61fe/packages/mimecast/manifest.yml#L12
Mimecast should be compatible with 8.0.0, but the kibana constraint only allows for 7.x.
integrations/packages/mimecast/manifest.yml
Line 12 in 5a2d68e