diff --git a/frontend/index.html b/frontend/index.html
index b2ed1d0..d18c9b4 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -9955,6 +9955,7 @@
             const [loading, setLoading] = useState(true);
             const [error, setError] = useState('');
             const [busy, setBusy] = useState('');
+            const [oneEmail, setOneEmail] = useState(() => user?.email || '');
 
             const load = useCallback(async () => {
                 let s;
@@ -9991,12 +9992,14 @@
                 return () => { cancelled = true; };
             }, [load]);
 
-            const runAction = async (key, endpoint, successMsg, confirmMsg) => {
+            const runAction = async (key, endpoint, successMsg, confirmMsg, body) => {
                 if (busy) return;
                 if (confirmMsg && !window.confirm(confirmMsg)) return;
                 try {
                     setBusy(key);
-                    const res = await api(endpoint, { method: 'POST' }, token);
+                    const opts = { method: 'POST' };
+                    if (body) opts.body = JSON.stringify(body);
+                    const res = await api(endpoint, opts, token);
                     onShowToast(typeof successMsg === 'function' ? successMsg(res) : successMsg, 'success');
                 } catch (err) {
                     onShowToast(getErrorMessage(err, 'Action failed'), 'error');
@@ -10060,12 +10063,35 @@
                     {isAdmin && (
                         <div className="section">
                             <div className="section-title">Actions</div>
-                            <div className="index-action-buttons">
+                            <div className="index-action-hint" style={{ marginTop: 0, marginBottom: '8px' }}>
+                                Test with a single mailbox first:
+                            </div>
+                            <div className="index-action-buttons" style={{ alignItems: 'center', marginBottom: '16px' }}>
+                                <input
+                                    className="text-input"
+                                    type="email"
+                                    placeholder="name@ten31.xyz"
+                                    value={oneEmail}
+                                    onChange={(e) => setOneEmail(e.target.value)}
+                                    style={{ maxWidth: '260px' }}
+                                />
                                 <button
-                                    onClick={() => runAction('enroll', '/api/email/accounts/enroll-all', (r) => `Enrolled ${r?.count ?? 0} mailbox(es)`, 'Enroll all Ten31 mailboxes for capture? This connects each active @ten31.xyz user’s Gmail via the service account. Domain-wide delegation must already be authorized in Google Workspace admin.')}
+                                    onClick={() => {
+                                        const addr = (oneEmail || '').trim();
+                                        if (!addr) { onShowToast('Enter a mailbox address', 'error'); return; }
+                                        runAction('enroll-one', '/api/email/accounts/enroll', (r) => `Enrolled ${r?.email || addr}`, `Enroll just ${addr} for capture?`, { email: addr });
+                                    }}
                                     disabled={!enabled || !!busy}
                                 >
-                                    {busy === 'enroll' ? 'Enrolling…' : 'Enroll Ten31 mailboxes'}
+                                    {busy === 'enroll-one' ? 'Enrolling…' : 'Enroll this mailbox'}
+                                </button>
+                            </div>
+                            <div className="index-action-buttons">
+                                <button
+                                    onClick={() => runAction('enroll', '/api/email/accounts/enroll-all', (r) => `Enrolled ${r?.count ?? 0} mailbox(es)`, 'Enroll ALL Ten31 mailboxes for capture? This connects every active @ten31.xyz user’s Gmail via the service account. Domain-wide delegation must already be authorized in Google Workspace admin.')}
+                                    disabled={!enabled || !!busy}
+                                >
+                                    {busy === 'enroll' ? 'Enrolling…' : 'Enroll all Ten31 mailboxes'}
                                 </button>
                                 <button
                                     onClick={() => runAction('sync', '/api/email/sync/run-now', 'Sync started')}
diff --git a/start9/0.4/startos/utils.ts b/start9/0.4/startos/utils.ts
index 0f7671b..afaeffc 100644
--- a/start9/0.4/startos/utils.ts
+++ b/start9/0.4/startos/utils.ts
@@ -24,8 +24,9 @@ export const PACKAGE_TITLE = 'Ten31 Database'
 //   * 0.1.0:56 (Thesis Workshop redesign: edit/choose/delete + approve-as-current)
 //   * 0.1.0:57 (redaction fix: magnitude regex no longer eats the word after an amount)
 //   * 0.1.0:58 (seed 5 Architect positioning framings into the Workshop as candidate options)
-//   * Current:        0.1.0:59 (Email Capture admin panel + matched email into the grounding corpus)
-export const PACKAGE_VERSION = '0.1.0:59'
+//   * 0.1.0:59 (Email Capture admin panel + matched email into the grounding corpus)
+//   * Current:        0.1.0:60 (Email Capture: single-mailbox enroll field for testing)
+export const PACKAGE_VERSION = '0.1.0:60'
 
 export const DATA_MOUNT_PATH = '/data'
 export const WEB_PORT = 8080
diff --git a/start9/0.4/startos/versions/index.ts b/start9/0.4/startos/versions/index.ts
index 640ad4e..d630bbe 100644
--- a/start9/0.4/startos/versions/index.ts
+++ b/start9/0.4/startos/versions/index.ts
@@ -20,8 +20,9 @@ import { v_0_1_0_56 } from './v0.1.0.56'
 import { v_0_1_0_57 } from './v0.1.0.57'
 import { v_0_1_0_58 } from './v0.1.0.58'
 import { v_0_1_0_59 } from './v0.1.0.59'
+import { v_0_1_0_60 } from './v0.1.0.60'
 
 export const versionGraph = VersionGraph.of({
-  current: v_0_1_0_59,
-  other: [v_0_1_0_39, v_0_1_0_40, v_0_1_0_41, v_0_1_0_42, v_0_1_0_43, v_0_1_0_44, v_0_1_0_45, v_0_1_0_46, v_0_1_0_47, v_0_1_0_48, v_0_1_0_49, v_0_1_0_50, v_0_1_0_51, v_0_1_0_52, v_0_1_0_53, v_0_1_0_54, v_0_1_0_55, v_0_1_0_56, v_0_1_0_57, v_0_1_0_58],
+  current: v_0_1_0_60,
+  other: [v_0_1_0_39, v_0_1_0_40, v_0_1_0_41, v_0_1_0_42, v_0_1_0_43, v_0_1_0_44, v_0_1_0_45, v_0_1_0_46, v_0_1_0_47, v_0_1_0_48, v_0_1_0_49, v_0_1_0_50, v_0_1_0_51, v_0_1_0_52, v_0_1_0_53, v_0_1_0_54, v_0_1_0_55, v_0_1_0_56, v_0_1_0_57, v_0_1_0_58, v_0_1_0_59],
 })
diff --git a/start9/0.4/startos/versions/v0.1.0.60.ts b/start9/0.4/startos/versions/v0.1.0.60.ts
new file mode 100644
index 0000000..68f56aa
--- /dev/null
+++ b/start9/0.4/startos/versions/v0.1.0.60.ts
@@ -0,0 +1,16 @@
+import { VersionInfo } from '@start9labs/start-sdk'
+
+// Email Capture: add a single-mailbox enroll field (pre-filled with the admin's own
+// address) so an admin can test capture on one mailbox before enrolling the whole
+// domain. Calls the existing enroll-one endpoint; the enroll-all button stays. No
+// schema migration.
+export const v_0_1_0_60 = VersionInfo.of({
+  version: '0.1.0:60',
+  releaseNotes: {
+    en_US: [
+      'Email Capture: you can now enroll a single mailbox (pre-filled with your own address)',
+      'to test capture before turning it on for the whole team. The enroll-all option stays.',
+    ].join(' '),
+  },
+  migrations: { up: async () => {}, down: async () => {} },
+})