The new Outlook that ships with Windows 11 lets you use your Gelecek İnternet email account on Windows. You will need to add the custom server settings manually.

1. Open the Outlook (new) app.
2. Go to Settings > Accounts > Email accounts > Add account.
3. Choose IMAP as the provider.
4. Enter the details below and confirm with Continue.

Note: The new Outlook has limited support for custom IMAP accounts in some versions. If you cannot add an IMAP account manually, use Windows Mail or Thunderbird instead; both work with the same settings. For SMTP on port 587, "Outgoing server requires authentication" must be checked. If you run into trouble, write to destek@gelecekint.com.