Mimecast can block Encyro email email notifications of secure messages, signature requests, or even password reset links, even though those emails contain no promotional content or otherwise harmful content. Please take the following steps:
- Report the incorrectly blocked email as a "false positive" to Mimecast using their support page: https://community.mimecast.com/s/article/Raising-a-Mimecast-Support-Case-1045768043
- Add encyro.com as a Trusted Sender in your Mimecast settings
- Release previously received Encyro emails from Hold Queue: see this.