diff --git a/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Pages/Notifications/SmtpConfiguration.razor b/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Pages/Notifications/SmtpConfiguration.razor
index c50ad77b..5d9092da 100644
--- a/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Pages/Notifications/SmtpConfiguration.razor
+++ b/src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Pages/Notifications/SmtpConfiguration.razor
@@ -46,12 +46,25 @@
                     </div>
                     <div class="card-body small">
                         <div class="row g-2">
-                            <div class="col-md-4 text-muted">Host</div>
-                            <div class="col-md-8">@smtp.Host:@smtp.Port</div>
+                            <div class="col-md-4 text-muted">Transport</div>
+                            <div class="col-md-8"><span class="badge bg-secondary">@(smtp.Transport ?? "Smtp")</span></div>
+                            @if (IsEws(smtp.Transport))
+                            {
+                                <div class="col-md-4 text-muted">EWS URL</div>
+                                <div class="col-md-8">@smtp.Host</div>
+                            }
+                            else
+                            {
+                                <div class="col-md-4 text-muted">Host</div>
+                                <div class="col-md-8">@smtp.Host:@smtp.Port</div>
+                            }
                             <div class="col-md-4 text-muted">Auth Type</div>
                             <div class="col-md-8"><span class="badge bg-secondary">@smtp.AuthType</span></div>
-                            <div class="col-md-4 text-muted">TLS Mode</div>
-                            <div class="col-md-8">@(string.IsNullOrWhiteSpace(smtp.TlsMode) ? "(not set)" : smtp.TlsMode)</div>
+                            @if (!IsEws(smtp.Transport))
+                            {
+                                <div class="col-md-4 text-muted">TLS Mode</div>
+                                <div class="col-md-8">@(string.IsNullOrWhiteSpace(smtp.TlsMode) ? "(not set)" : smtp.TlsMode)</div>
+                            }
                             <div class="col-md-4 text-muted">From Address</div>
                             <div class="col-md-8">@smtp.FromAddress</div>
                             <div class="col-md-4 text-muted">Credentials</div>
@@ -74,33 +87,44 @@
                     <div class="card-header">@(_editingSmtp != null ? "Edit SMTP Configuration" : "Add SMTP Configuration")</div>
                     <div class="card-body">
                         <div class="row g-3">
+                            <div class="col-md-4">
+                                <label class="form-label">Transport</label>
+                                <select class="form-select" @bind="Transport">
+                                    <option>Smtp</option>
+                                    <option>Ews</option>
+                                </select>
+                            </div>
                             <div class="col-12">
-                                <label class="form-label">Host</label>
-                                <input type="text" class="form-control" @bind="_host" placeholder="smtp.example.com" />
-                            </div>
-                            <div class="col-md-4">
-                                <label class="form-label">Port</label>
-                                <input type="number" class="form-control" @bind="_port" min="1" max="65535" />
-                            </div>
-                            <div class="col-md-4">
-                                <label class="form-label">Auth Type</label>
-                                <select class="form-select" @bind="_authType">
-                                    <option>OAuth2</option>
-                                    <option>Basic</option>
-                                </select>
-                            </div>
-                            <div class="col-md-4">
-                                <label class="form-label">TLS Mode</label>
-                                <select class="form-select" @bind="_tlsMode">
-                                    <option>None</option>
-                                    <option>StartTLS</option>
-                                    <option>SSL</option>
-                                </select>
+                                <label class="form-label">@(IsEwsForm ? "EWS URL" : "Host")</label>
+                                <input type="text" class="form-control" @bind="_host"
+                                       placeholder="@(IsEwsForm ? "https://mail.example.com/ews/exchange.asmx" : "smtp.example.com")" />
                             </div>
+                            @if (!IsEwsForm)
+                            {
+                                <div class="col-md-4">
+                                    <label class="form-label">Port</label>
+                                    <input type="number" class="form-control" @bind="_port" min="1" max="65535" />
+                                </div>
+                                <div class="col-md-4">
+                                    <label class="form-label">Auth Type</label>
+                                    <select class="form-select" @bind="_authType">
+                                        <option>OAuth2</option>
+                                        <option>Basic</option>
+                                    </select>
+                                </div>
+                                <div class="col-md-4">
+                                    <label class="form-label">TLS Mode</label>
+                                    <select class="form-select" @bind="_tlsMode">
+                                        <option>None</option>
+                                        <option>StartTLS</option>
+                                        <option>SSL</option>
+                                    </select>
+                                </div>
+                            }
                             <div class="col-12">
                                 <label class="form-label">Credentials</label>
                                 <input type="password" class="form-control" @bind="_credentials"
-                                       placeholder="OAuth2 client secret or SMTP password" />
+                                       placeholder="@(IsEwsForm ? @"domain\username:password" : "OAuth2 client secret or SMTP password")" />
                                 <div class="form-text">Treat as sensitive — visible to admins only.</div>
                             </div>
                             <div class="col-12">
@@ -153,6 +177,10 @@
 
     private string _host = string.Empty;
     private int _port = 587;
+    private string _transport = "Smtp";
+    // AuthType as it was before the operator switched to Ews, so switching back to Smtp
+    // restores their choice rather than leaving the forced "Basic" behind.
+    private string _authTypeBeforeEws = "OAuth2";
     private string _authType = "OAuth2";
     private string? _tlsMode;
     private string? _credentials;
@@ -163,6 +191,42 @@
 
     private ToastNotification _toast = default!;
 
+    /// <summary>
+    /// Bound by the Transport select. The setter is where the transport's shape rules are
+    /// applied: EWS authenticates with HTTP Basic only, so selecting it forces the auth type
+    /// (which also hides the OAuth2 inputs, gated on AuthType as before). Switching back to
+    /// Smtp restores the auth type the operator had chosen.
+    /// </summary>
+    private string Transport
+    {
+        get => _transport;
+        set
+        {
+            if (string.Equals(_transport, value, StringComparison.Ordinal))
+            {
+                return;
+            }
+
+            if (IsEws(value))
+            {
+                _authTypeBeforeEws = _authType;
+                _authType = "Basic";
+            }
+            else
+            {
+                _authType = _authTypeBeforeEws;
+            }
+            _transport = value;
+        }
+    }
+
+    /// <summary>Gets a value indicating whether the edit form is currently in EWS mode.</summary>
+    private bool IsEwsForm => IsEws(_transport);
+
+    /// <summary>Null-safe, case-insensitive test for the EWS transport; null/blank means Smtp.</summary>
+    private static bool IsEws(string? transport)
+        => string.Equals(transport?.Trim(), "Ews", StringComparison.OrdinalIgnoreCase);
+
     protected override async Task OnInitializedAsync()
     {
         await LoadAsync();
@@ -188,6 +252,8 @@
         _editingSmtp = null;
         _host = string.Empty;
         _port = 587;
+        _transport = "Smtp";
+        _authTypeBeforeEws = "OAuth2";
         _authType = "OAuth2";
         _tlsMode = "None";
         _credentials = null;
@@ -203,6 +269,8 @@
         _editingSmtp = smtp;
         _host = smtp.Host;
         _port = smtp.Port;
+        _transport = smtp.Transport ?? "Smtp";
+        _authTypeBeforeEws = smtp.AuthType;
         _authType = smtp.AuthType;
         _tlsMode = smtp.TlsMode;
         _credentials = smtp.Credentials;
@@ -228,12 +296,25 @@
             return;
         }
 
+        // This page writes through the repository, so the ManagementActor's EWS shape gate
+        // is not on this path — mirror its Host rule here (auth type is already forced to
+        // Basic by the Transport setter) so an unusable row cannot be saved from the UI.
+        if (IsEwsForm
+            && (!Uri.TryCreate(_host.Trim(), UriKind.Absolute, out var ewsEndpoint)
+                || !string.Equals(ewsEndpoint.Scheme, Uri.UriSchemeHttps, StringComparison.Ordinal)))
+        {
+            _formError = "EWS transport requires an absolute https:// EWS endpoint URL "
+                + "(e.g. https://mail.example.com/ews/exchange.asmx).";
+            return;
+        }
+
         try
         {
             if (_editingSmtp != null)
             {
                 _editingSmtp.Host = _host.Trim();
                 _editingSmtp.Port = _port;
+                _editingSmtp.Transport = _transport;
                 _editingSmtp.AuthType = _authType;
                 _editingSmtp.TlsMode = _tlsMode;
                 _editingSmtp.Credentials = _credentials?.Trim();
@@ -247,6 +328,7 @@
                 var smtp = new SmtpConfigurationEntity(_host.Trim(), _authType, _fromAddress.Trim())
                 {
                     Port = _port,
+                    Transport = _transport,
                     TlsMode = _tlsMode,
                     Credentials = _credentials?.Trim(),
                     OAuth2Authority = NormalizeOptional(_oauth2Authority),