There is also this.
"The plan, he said, was to have criminals use the storefront — an online end-to-end encryption service called Tutanota — to allow authorities to collect intelligence about them."
"So if targets begin to use that service, the agency that's collecting that information would be able to feed it back, that information, into the Five Eyes system, and then back into the RCMP,"
https://www.cbc.ca/news/politics/ortis-testimony-transcripts-1.7026011