Dead email domain:

Encrypted email service CTemplar has shut down as of May 26, 2022.

Security website The Daily Swig reports that, "No reason was given for the closure of the service. However, it comes less than one year after a system failure meant that some customer data was 'irrecoverably lost.'"

It looks as though their primary email domain was likely They also supported custom domains and I see at least a handful of custom domains out in the wild in the dot com DNS zone that can no longer receive mail, as their MX records pointed to, which no longer exists. Best to suppress as much of this as your sending ESP or CRM platform can identify.

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