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odysseus/docs/email-outlook.md
2026-06-08 15:32:16 +01:00

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# Outlook / Office 365 email accounts
Odysseus email accounts currently use IMAP and SMTP with username/password
authentication. That works for providers that still allow app passwords or
mailbox passwords for IMAP/SMTP.
Microsoft disables basic authentication for Outlook and Microsoft 365 in most
modern accounts and tenants. If you try to add an Outlook account with a normal
password, Microsoft may return errors such as:
- `IMAP: AUTHENTICATE failed`
- `SMTP: 535 5.7.139 Authentication unsuccessful, basic authentication is disabled`
This is expected. Odysseus does not support Microsoft OAuth or Graph Mail yet,
so Outlook / Office 365 accounts cannot currently be added through the password
form. Use another email provider with app-password support, or track the future
Microsoft Graph OAuth integration.