Quick answer
Use the provider's exact port/TLS settings in a supported client. Guessing ports or disabling encryption will not restore a retired Windows Mail workflow.
Applies to
Historical reference for the retired Windows Mail application, not current new Outlook. Microsoft ended Windows Mail, Calendar and People support on December 31, 2024. Preserve local data and move to a supported client; the old app is not a reliable current sending/receiving workflow.
Steps
- Record the full username, server hostnames, protocol and supported TLS settings from the actual mail service.
- Open the supported client's incoming and outgoing settings separately and apply the matching values.
- Retest both directions without bypassing certificate validation.
Check the result
Confirm incoming mail and authenticated SMTP sending independently.
Troubleshooting and support
If a port is unreachable, distinguish network filtering from wrong TLS mode, server name or credentials. Do not use a shell or control-panel login port for email.
If the problem continues, contact support from the account that owns the service. Include the domain, exact error, time and time zone, tool name, and a redacted screenshot. Keep passwords, private keys, cookies and private message content out of the ticket.
Earlier interface shown in the video
The video demonstrates the old app's advanced incoming/outgoing server settings.
Video tutorial
The original video is preserved. Its interface or product version may differ from the written guidance above.
Related help
- Find the correct secure IMAP and SMTP settings for your mailbox
- Use webmail to separate a mailbox problem from a device problem
- Configuring an IMAP email account with SSL in Thunderbird
Official references
Written content reviewed November 1, 2026. Menu availability depends on the product version, permissions and service.
