diff --git a/src/components/AmountDenominationInput.tsx b/src/components/AmountDenominationInput.tsx
index 24a6d21..2151476 100644
--- a/src/components/AmountDenominationInput.tsx
+++ b/src/components/AmountDenominationInput.tsx
@@ -53,9 +53,9 @@ export default function AmountDenominationInput({
     if (!xlmToUsdcRate || !value || isNaN(parseFloat(value))) return null;
     const n = parseFloat(value);
     if (denomination === "XLM") {
-      return (n * xlmToUsdcRate).toFixed(4);
+      return (n * xlmToUsdcRate).toFixed(2);
     } else {
-      return (n / xlmToUsdcRate).toFixed(4);
+      return (n / xlmToUsdcRate).toFixed(7);
     }
   })();
 
@@ -77,8 +77,11 @@ export default function AmountDenominationInput({
       converted = n / xlmToUsdcRate;
     }
 
+    // next === "USDC" means we just converted XLM -> USDC (2 decimals);
+    // next === "XLM" means we just converted USDC -> XLM (7 decimals).
+    const decimals = next === "USDC" ? 2 : 7;
     onDenominationChange(next);
-    onChange(converted.toFixed(7).replace(/\.?0+$/, ""));
+    onChange(converted.toFixed(decimals));
   }, [denomination, value, xlmToUsdcRate, onDenominationChange, onChange]);
 
   const borderCls = error
diff --git a/src/components/ReminderChecker.tsx b/src/components/ReminderChecker.tsx
index 94fc4cc..483cbf7 100644
--- a/src/components/ReminderChecker.tsx
+++ b/src/components/ReminderChecker.tsx
@@ -1,16 +1,102 @@
 "use client";
 
-import { useEffect } from "react";
-import { checkAndFireReminders } from "@/lib/reminders";
+import { useState, useEffect, useCallback } from "react";
+import { getReminders, type Reminder } from "@/lib/reminders";
+import { getSnoozeState, snoozeInvoice, type SnoozeOption } from "@/lib/expirySnooze";
+
+const CHECK_INTERVAL_MS = 60_000;
+
+const SNOOZE_OPTIONS: { option: SnoozeOption; label: string }[] = [
+  { option: "1h", label: "1 hour" },
+  { option: "24h", label: "24 hours" },
+  { option: "3d", label: "3 days" },
+];
+
+async function fireNotification(reminder: Reminder) {
+  if (!("Notification" in window)) return;
+  const show = () =>
+    new Notification(`StellarSplit Reminder — Invoice #${reminder.invoiceId}`, {
+      body: reminder.message,
+      icon: "/favicon.ico",
+    });
+  if (Notification.permission === "granted") {
+    show();
+  } else if (Notification.permission === "default") {
+    const permission = await Notification.requestPermission();
+    if (permission === "granted") show();
+  }
+}
 
 /**
- * ReminderChecker — invisible client component that fires browser notifications
- * for any past-due reminders on every page load.
+ * ReminderChecker — fires browser notifications for past-due reminders and
+ * lets the user snooze any that are currently showing.
  */
 export default function ReminderChecker() {
-  useEffect(() => {
-    checkAndFireReminders();
+  const [dueReminders, setDueReminders] = useState<Reminder[]>([]);
+  const [openMenuFor, setOpenMenuFor] = useState<string | null>(null);
+
+  const checkReminders = useCallback(() => {
+    const now = new Date();
+    const due = getReminders().filter(
+      (r) => new Date(r.reminderDate) <= now && !getSnoozeState(r.invoiceId)
+    );
+    setDueReminders((prev) => {
+      const newlyDue = due.filter((r) => !prev.some((p) => p.invoiceId === r.invoiceId));
+      newlyDue.forEach(fireNotification);
+      return due;
+    });
   }, []);
 
-  return null;
+  useEffect(() => {
+    checkReminders();
+    const interval = setInterval(checkReminders, CHECK_INTERVAL_MS);
+    return () => clearInterval(interval);
+  }, [checkReminders]);
+
+  const handleSnooze = (invoiceId: string, option: SnoozeOption) => {
+    snoozeInvoice(invoiceId, option);
+    setOpenMenuFor(null);
+    setDueReminders((prev) => prev.filter((r) => r.invoiceId !== invoiceId));
+  };
+
+  if (dueReminders.length === 0) return null;
+
+  return (
+    <div className="fixed bottom-4 right-4 z-40 flex flex-col gap-2 max-w-sm">
+      {dueReminders.map((reminder) => (
+        <div
+          key={reminder.invoiceId}
+          className="bg-gray-900 border border-gray-700 rounded-lg p-3 shadow-lg flex items-start justify-between gap-3"
+        >
+          <div className="text-sm text-gray-200">
+            <p className="font-semibold">Invoice #{reminder.invoiceId}</p>
+            <p className="text-gray-400">{reminder.message}</p>
+          </div>
+          <div className="relative shrink-0">
+            <button
+              onClick={() =>
+                setOpenMenuFor(openMenuFor === reminder.invoiceId ? null : reminder.invoiceId)
+              }
+              className="text-xs font-medium px-2 py-1 rounded bg-gray-800 hover:bg-gray-700 transition-colors"
+            >
+              Snooze ▼
+            </button>
+            {openMenuFor === reminder.invoiceId && (
+              <div className="absolute top-full right-0 mt-1 bg-gray-800 border border-gray-700 rounded-lg shadow-lg z-50 min-w-max">
+                {SNOOZE_OPTIONS.map(({ option, label }) => (
+                  <button
+                    key={option}
+                    onClick={() => handleSnooze(reminder.invoiceId, option)}
+                    className="block w-full text-left px-3 py-2 text-xs hover:bg-gray-700 transition-colors border-t border-gray-700 first:border-t-0"
+                  >
+                    {label}
+                  </button>
+                ))}
+              </div>
+            )}
+          </div>
+        </div>
+      ))}
+    </div>
+  );
 }
diff --git a/src/components/WebhookConfig.tsx b/src/components/WebhookConfig.tsx
index cad0b35..e00e1db 100644
--- a/src/components/WebhookConfig.tsx
+++ b/src/components/WebhookConfig.tsx
@@ -31,6 +31,8 @@ export default function WebhookConfig({ invoiceId }: Props) {
   const [testing, setTesting] = useState(false);
   const [testStatus, setTestStatus] = useState<string | null>(null);
   const [logs, setLogs] = useState<DeliveryLog[]>([]);
+  const [pinging, setPinging] = useState(false);
+  const [pingResult, setPingResult] = useState<string | null>(null);
 
   useEffect(() => {
     const stored = localStorage.getItem(storageKey(invoiceId));
@@ -114,6 +116,25 @@ export default function WebhookConfig({ invoiceId }: Props) {
     }
   };
 
+  const handleSendTestPing = async () => {
+    if (!url) return;
+    setPinging(true);
+    setPingResult(null);
+    try {
+      const res = await fetch(url, {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ event: "test" }),
+      });
+      const text = await res.text();
+      setPingResult(`Status: ${res.status}\n${text.slice(0, 200)}`);
+    } catch (e) {
+      setPingResult(`Error: ${String(e)}`);
+    } finally {
+      setPinging(false);
+    }
+  };
+
   return (
     <section aria-labelledby="webhook-heading" className="mt-8 border-t border-gray-800 pt-6">
       <h2 id="webhook-heading" className="text-lg font-semibold mb-3">
@@ -177,6 +198,13 @@ export default function WebhookConfig({ invoiceId }: Props) {
               >
                 {testing ? "Testing..." : "Test Webhook"}
               </button>
+              <button
+                onClick={handleSendTestPing}
+                disabled={pinging}
+                className="min-h-11 px-4 py-2 rounded-lg bg-purple-600 hover:bg-purple-500 disabled:bg-gray-600 text-sm font-semibold transition-colors"
+              >
+                {pinging ? "Pinging..." : "Send Test Ping"}
+              </button>
               <button
                 onClick={handleRemove}
                 className="min-h-11 px-4 py-2 rounded-lg bg-gray-700 hover:bg-gray-600 text-sm font-semibold transition-colors"
@@ -197,6 +225,11 @@ export default function WebhookConfig({ invoiceId }: Props) {
             Test result: {testStatus}
           </p>
         )}
+        {pingResult && (
+          <p role="status" className="text-sm text-gray-300 whitespace-pre-wrap font-mono">
+            {pingResult}
+          </p>
+        )}
       </div>
 
       {logs.length > 0 && (
diff --git a/src/lib/expirySnooze.ts b/src/lib/expirySnooze.ts
index e63da40..13382d9 100644
--- a/src/lib/expirySnooze.ts
+++ b/src/lib/expirySnooze.ts
@@ -7,7 +7,7 @@
 
 const SNOOZE_STORAGE_KEY = "invoice_snooze";
 
-export type SnoozeOption = "1h" | "4h" | "until-tomorrow";
+export type SnoozeOption = "1h" | "4h" | "24h" | "3d" | "until-tomorrow";
 
 export interface SnoozeState {
   invoiceId: string;
@@ -62,6 +62,12 @@ export function snoozeInvoice(
     case "4h":
       snoozedUntil = now + 4 * 60 * 60 * 1000;
       break;
+    case "24h":
+      snoozedUntil = now + 24 * 60 * 60 * 1000;
+      break;
+    case "3d":
+      snoozedUntil = now + 3 * 24 * 60 * 60 * 1000;
+      break;
     case "until-tomorrow":
       const tomorrow = new Date();
       tomorrow.setDate(tomorrow.getDate() + 1);