Send WordPress email through Microsoft 365 / Outlook
Connect your Microsoft 365 account via OAuth 2.0 and send WordPress emails through Outlook or Office 365.
Why pair Microsoft 365 / Outlook with NimblyMail
Microsoft disabled basic authentication for SMTP — and most WordPress SMTP plugins still haven’t caught up. NimblyMail connects Microsoft 365 and Outlook.com through modern OAuth 2.0: no SMTP AUTH exceptions to request, no app passwords, and tokens that refresh themselves. If your organization lives in Exchange Online, this is the clean way to send WordPress email.
- Modern auth only. OAuth 2.0 against Microsoft Entra ID — compliant with Microsoft’s security defaults out of the box.
- No SMTP AUTH exceptions. Skip the per-mailbox ‘Authenticated SMTP’ toggle and the tenant-level exceptions basic auth requires.
- Shared mailboxes supported. Send as a shared mailbox or alias your account can represent — invoices@, support@, and more.
- Encrypted token storage. Refresh tokens are AES-256 encrypted at rest and renew automatically.
Connect Microsoft 365 / Outlook in three steps
Choose Microsoft 365 / Outlook
Pick the Microsoft mailer in the NimblyMail setup wizard.
Authorize with Microsoft
Consent once in the Microsoft login screen — send-mail permission only.
Test and audit
A test email confirms delivery; the 6-pillar audit validates your domain's SPF and DMARC.
Microsoft 365 signs DKIM for your domain once enabled in the Defender portal; NimblyMail's audit checks that your SPF includes spf.protection.outlook.com and that DMARC is published.
Microsoft 365 / Outlook + WordPress, answered
Yes. NimblyMail uses OAuth 2.0 with the Microsoft Graph-backed SMTP submission, which is unaffected by the basic-auth deprecation. No app passwords, no legacy protocols.
Yes — any mailbox or alias your authorized account has SendAs permission for works as the From address.
It can't, in practice: NimblyMail stores the refresh token (encrypted) and renews access automatically before every send.
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