Secure emails

Find out how to read and reply to secure emails from Suffolk County Council using Microsoft O365 Message Encryption (OME).

We sometimes send emails that include sensitive information. The only person who should see an email like this is the person it’s meant for.

When we send sensitive emails, they are marked "OFFICIAL-SENSITIVE". We give the email an extra level of security by encrypting it using Microsoft’s O365 Message Encryption tool.  

To read an encrypted email from us you will need to follow the instructions within the email and do one of the following things to read it:

  • use the one-time passcode option (the passcode will be emailed to you)
  • create a new Microsoft account or sign in to an existing Microsoft account

Find out more by reading our guide for recipients (PDF, 1MB) or the Microsoft Office 365 support page

How to use O365 Message Encryption

Are you an organisation?

If you are an organisation, you may wish to consider enabling Transport Layer Security (TLS) for your email services.

TLS for email is part of an open internet technical protocol, which is being promoted across the public sector and into private business. Read the UK’s National Cyber Security Centre guidance for secure email

If your organisation would like to deploy TLS and use it to send secure emails to and from Suffolk County Council, please contact