Step-by-step instructions for the client's Microsoft 365 administrator or IT support provider to configure, and later reconnect, WP Mail SMTP so WordPress can send email through the client's authorized Microsoft 365 mailbox. Technical Connection Guide Connect a WordPress Website to Microsoft 365 Email WP Mail SMTP configuration instructions for the
MIGRATION DATE: 08/21/2026 (Friday) WINDOW START: 10:00 PM EST EST. DURATION: 3–5 hours MAIL LOSS RISK: None — incoming mail is captured and streamed in after completion We wanted to inform you that we are migrating to new and improved mail servers on 8/21/2026. We are expecting 3 to 5
If your business uses Microsoft 365 for email, messages that appear to come from your company email address are expected to be sent through an authorized Microsoft mail server. WordPress websites often send form notifications and other website emails directly from the web server instead. When the website tries to
The error “550 Authentication is Required for Relay” occurs when an email client tries to send a message through the mail server without properly logging in (authenticating) to the SMTP server. In simple terms, the mail server is saying: “You’re trying to send email through me, but you haven’t proven
Why You Might Not Receive an Email in SmarterMail — Even If the Sender Has Emailed You Before It can be confusing when someone tells you they sent an email but it never arrives—especially if you’ve successfully received messages from that same person in the past. With modern email systems,
Why the Sending Mail Server Isn’t Responsible When Legitimate Email Isn’t Delivered It’s one of the most common support questions email providers receive: “I sent an email, but the recipient never got it. What’s wrong with my email account?” In many cases, nothing is wrong with the sending mail server