diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..ca53696
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+*.md text eol=lf
+*.mjs text eol=lf
diff --git a/docs/commands.md b/docs/commands.md
index 74a88ed..832e902 100644
--- a/docs/commands.md
+++ b/docs/commands.md
@@ -1358,6 +1358,12 @@ records that are not prospects. Bulk archive ends mail and keeps list membership
 it closes open opportunities unless `--no-cascade` is supplied. A positional
 `prospect_...` ID continues to use the single-prospect operation.
 
+### Repeat forever
+
+Campaign step JSON accepts `repeat_forever: true` on the final step with `interval_days` of 21, 30, 45, 60, 90, 180, or 365. Earlier steps finish first. Read the cost estimate and enable auto-reload before sending; later pieces are charged when they go out. The CLI shows Forever for recurring steps; their bounded `repeat_count` is not a stopping limit.
+
+Use `dm mail settings update --body` with all three fields `default_single_send_interval_days`, `default_single_send_repeat_count`, and `default_single_send_repeat_forever` to save the workspace default for single postcards on web and mobile. This does not send mail or change existing campaigns.
+
 ### International Owner
 
 Property search, count and export accept `international_owner` in the `--body` filters array. Use `true` for foreign mailing addresses, `false` to exclude them, or omit the filter for Any. The source is `MailingForeignAddressInd`: Canada (`C`) and other foreign addresses (`Y`) are international; null values and US territories are excluded.
diff --git a/src/commands/mail.ts b/src/commands/mail.ts
index e6f486d..515c30e 100644
--- a/src/commands/mail.ts
+++ b/src/commands/mail.ts
@@ -51,6 +51,7 @@ interface CampaignStep {
   delay_days: number;
   interval_days: number;
   repeat_count: number;
+  repeat_forever?: boolean;
   skip_if_responded: boolean;
 }
 
@@ -101,6 +102,9 @@ interface CostEstimateResponse {
     price_per_card_cents: number;
     total_cost_cents: number;
     total_cost_dollars: number;
+    repeat_forever?: boolean;
+    repeat_interval_days?: number | null;
+    recurring_cost_cents?: number | null;
     pay_now_cost_cents: number;
     pay_later_cost_cents: number;
     wallet_balance_cents: number;
@@ -373,7 +377,7 @@ export async function mailCampaignsGet(id: string, options: { json?: boolean }):
       name: s.step_name || '—',
       design: s.design_id ? truncate(s.design_id, 16) : '(prompt)',
       delay: `${s.delay_days}d`,
-      repeat: s.repeat_count,
+      repeat: s.repeat_forever ? `Forever, every ${s.interval_days}d` : s.repeat_count,
     }));
     printTable(stepRows, ['order', 'name', 'design', 'delay', 'repeat']);
   }
@@ -601,7 +605,8 @@ export async function mailCampaignsCostEstimate(
   printKeyValue({
     Recipients: e.recipient_count,
     'Price Per Card': `$${(e.price_per_card_cents / 100).toFixed(2)}`,
-    'Total Cost': `$${e.total_cost_dollars.toFixed(2)}`,
+    [e.repeat_forever ? 'Scheduled Cost' : 'Total Cost']: `$${e.total_cost_dollars.toFixed(2)}`,
+    ...(e.repeat_forever ? { Repeats: `Every ${e.repeat_interval_days} days until stopped`, 'Each Repeat': `$${((e.recurring_cost_cents ?? 0) / 100).toFixed(2)}` } : {}),
     'Pay Now': `$${(e.pay_now_cost_cents / 100).toFixed(2)}`,
     'Pay Later': `$${(e.pay_later_cost_cents / 100).toFixed(2)}`,
     'Wallet Balance': `$${(e.wallet_balance_cents / 100).toFixed(2)}`,
@@ -1445,6 +1450,9 @@ interface MailSettings {
   contact_frequency_limit_days: number | null;
   default_qr_code_url: string | null;
   default_signature_image_url: string | null;
+  default_single_send_interval_days?: number | null;
+  default_single_send_repeat_count?: number | null;
+  default_single_send_repeat_forever?: boolean | null;
 }
 
 interface MailSettingsResponse {
@@ -1460,6 +1468,7 @@ function printMailSettings(s: MailSettings): void {
       : '— (1 day)',
     'Default QR Code URL': s.default_qr_code_url ?? '—',
     'Default Signature Image': s.default_signature_image_url ?? '—',
+    'Default Postcard Schedule': s.default_single_send_repeat_forever ? `Repeat forever, every ${s.default_single_send_interval_days ?? 21} days` : s.default_single_send_interval_days === 0 ? 'Just once' : `${s.default_single_send_repeat_count ?? 6} sends, every ${s.default_single_send_interval_days ?? 21} days`,
   });
 }
 
diff --git a/tests/commands/mailCampaigns.test.ts b/tests/commands/mailCampaigns.test.ts
index 1defa04..0332860 100644
--- a/tests/commands/mailCampaigns.test.ts
+++ b/tests/commands/mailCampaigns.test.ts
@@ -37,6 +37,7 @@ import {
   mailCampaignsAddProperties,
   mailCampaignsEnd,
   mailCampaignsArchive,
+  mailCampaignsCostEstimate,
   mailCampaignsEstimateAdd,
   mailCampaignsList,
   parsePropertyIds,
@@ -185,6 +186,35 @@ describe('dm mail campaigns', () => {
     expect(process.exitCode).toBe(1);
   });
 
+  const costEstimate = {
+    recipient_count: 10,
+    price_per_card_cents: 75,
+    total_cost_cents: 1500,
+    total_cost_dollars: 15,
+    pay_now_cost_cents: 750,
+    pay_later_cost_cents: 750,
+    wallet_balance_cents: 10000,
+    wallet_available_cents: 10000,
+    can_afford: true,
+    auto_reload_available: true,
+  };
+
+  it('shows the total cost of a finite campaign in dollars', async () => {
+    mockApiRequest.mockResolvedValueOnce({ data: costEstimate });
+    await mailCampaignsCostEstimate('camp_1', {});
+    expect(printKeyValue).toHaveBeenLastCalledWith(expect.objectContaining({ 'Total Cost': '$15.00' }));
+  });
+
+  it('shows the scheduled and repeat costs of a repeating campaign in dollars', async () => {
+    mockApiRequest.mockResolvedValueOnce({
+      data: { ...costEstimate, repeat_forever: true, repeat_interval_days: 30, recurring_cost_cents: 750 },
+    });
+    await mailCampaignsCostEstimate('camp_1', {});
+    expect(printKeyValue).toHaveBeenLastCalledWith(
+      expect.objectContaining({ 'Scheduled Cost': '$15.00', 'Each Repeat': '$7.50' })
+    );
+  });
+
   it('ends a campaign only after the person confirms', async () => {
     mockConfirm.mockResolvedValueOnce(false).mockResolvedValueOnce(true);
     mockApiRequest.mockResolvedValue({
diff --git a/tests/release-version-check.test.ts b/tests/release-version-check.test.ts
index 27e805f..3239e55 100644
--- a/tests/release-version-check.test.ts
+++ b/tests/release-version-check.test.ts
@@ -66,7 +66,7 @@ describe('version check before staging and master', () => {
     writeFileSync(join(checkout, 'npm-alias/package.json'), JSON.stringify({ version, dependencies: { '@dealmachine/cli': version } }));
     writeFileSync(join(checkout, 'package-lock.json'), JSON.stringify({ version, packages: { '': { version } } }));
     writeFileSync(join(checkout, 'src/version.ts'), `export const CLI_VERSION = '${version}';\n`);
-    symlinkSync(join(root, 'scripts'), join(temp, 'linked-scripts'));
+    symlinkSync(join(root, 'scripts'), join(temp, 'linked-scripts'), process.platform === 'win32' ? 'junction' : 'dir');
     const run = spawnSync(process.execPath, [join(temp, 'linked-scripts', 'check-release-version.mjs'), checkout], {
       encoding: 'utf8',
       env: { PATH: process.env.PATH, GITHUB_BASE_REF: 'staging' },