S/MIME certificates
S/MIME Certificate Expiration and Renewal: A Guide for IT Teams
What happens when an S/MIME certificate expires, the industry rules that limit validity, and how to keep renewals from disrupting encrypted email.
CloudPGP Blog
Email Encryption Insights
Practical guidance on PGP, S/MIME and secure email for IT, security and compliance teams.
All articles
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Recipient guide
How to Open an Encrypted Email: A Guide for Recipients
How to open the most common kinds of encrypted email, from secure-portal notifications to S/MIME, PGP and password-protected attachments.
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GDPR
Does GDPR Require Email Encryption?
What the GDPR says about encrypting email, how encryption affects breach notification, and how to decide which messages need it.
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Migration
Why Organizations Are Moving PGP and S/MIME Encryption to the Cloud
The operational reasons organizations replace on-premises PGP and S/MIME servers, what changes and what does not, and how to plan the move.
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Microsoft 365 & Google Workspace
How to Encrypt Email in Microsoft 365 and Google Workspace
What Microsoft 365 and Google Workspace encrypt by default, which built-in options exist, and when to route mail through a PGP and S/MIME encryption service.