diff --git a/lib/models/subscriptions.js b/lib/models/subscriptions.js
index 959be77a..3a3503fe 100644
--- a/lib/models/subscriptions.js
+++ b/lib/models/subscriptions.js
@@ -214,6 +214,9 @@ module.exports.addConfirmation = (list, email, optInIp, data, callback) => {
                         }
 
                         setImmediate(() => {
+                            if (data._skip) {
+                                return;
+                            }
 
                             mailer.sendMail({
                                 from: {
diff --git a/routes/subscription.js b/routes/subscription.js
index 5158212a..6ee399c1 100644
--- a/routes/subscription.js
+++ b/routes/subscription.js
@@ -216,6 +216,11 @@ router.post('/:cid/subscribe', passport.parseForm, passport.csrfProtection, (req
         return res.redirect('/subscription/' + encodeURIComponent(req.params.cid) + '?' + tools.queryParams(req.body));
     }
 
+    let subTime = Number(req.body.sub) || 0;
+    let subTest = !!(subTime > Date.now() - 3600 * 1000 && subTime < Date.now() + 3600 * 1000);
+    let addressTest = !req.body.address;
+    let testsPass = subTest && addressTest;
+
     lists.getByCid(req.params.cid, (err, list) => {
         if (!err && !list) {
             err = new Error('Selected list not found');
@@ -232,6 +237,9 @@ router.post('/:cid/subscribe', passport.parseForm, passport.csrfProtection, (req
                 data[key] = (req.body[key] || '').toString().trim();
             }
         });
+        data._address = req.body.address;
+        data._sub = req.body.sub;
+        data._skip = !testsPass;
         data = tools.convertKeys(data);
 
         subscriptions.addConfirmation(list, email, req.ip, data, (err, confirmCid) => {
diff --git a/views/subscription/subscribe.hbs b/views/subscription/subscribe.hbs
index 6cc7eeb2..18f66d61 100644
--- a/views/subscription/subscribe.hbs
+++ b/views/subscription/subscribe.hbs
@@ -10,6 +10,9 @@
     <input type="hidden" name="_csrf" value="{{csrfToken}}">
     <input type="hidden" class="tz-detect" name="tz" id="tz" value="{{tz}}">
 
+    <input type="hidden" name="address" value="">
+    <input type="hidden" name="sub" id="sub" value="">
+
     <div class="form-group">
         <label for="email">Email Address</label>
         <input type="email" class="form-control" name="email" id="email" placeholder="" value="{{email}}" required>
@@ -121,3 +124,7 @@
         <button type="submit" class="btn btn-primary">Subscribe to list</button>
     </div>
 </form>
+
+<script>
+    document.getElementById('sub').value = new Date().getTime();
+</script>