Most RecentMost ViewedMost LikesTrust DigiCert Global Root G2 Certificate Authority to Avoid Exchange Online Email Disruption We wanted to let you know of an upcoming change in certificates trusted by Exchange Online. High Volume Email: Continued support for Basic Authentication & other important updates This announcement provides several important updates for High Volume Email. High Volume Email reaches General Availability in Exchange Online High Volume Email reached GA! Message Trace Support Using Graph API is now in Public Preview We are happy to announce that the Message Trace support using Graph API is now in Public Preview. Updates to High Volume Email (HVE) Public Preview We are excited to share some updates to High Volume Email (HVE) Public Preview. Public Preview: High Volume Email for Microsoft 365 Today we’re thrilled to announce the public preview of High Volume Email (HVE) for Microsoft 365. Limiting Onmicrosoft Domain Usage for Sending Emails We are announcing that all Exchange Online customers who send external email should start switching to custom (aka vanity) domain names. Streamlined Moderation Approvals, Now in All Outlook Clients We wanted to let you know about upcoming changes to Exchange Online message moderation. Announcing General Availability (GA) of the New Message Trace in Exchange Online We are excited to announce the GA of the new Message Trace in the Exchange admin center (EAC) in Exchange Online. Direct Send vs sending directly to an Exchange Online tenant This post discusses what Direct Send is, is not, and how to help control email sent directly to your tenant.