Web push notifications that bring users back.
relaybell sends notifications straight to your users' browsers — desktop, Android, and iPhone. Set up an opt-in prompt, build segments, and send rich, personalized notifications in minutes.
Free to deliver · No credit card · Works on desktop, Android & iPhone
Flash sale 🔥 30% off
nowEnds tonight — your cart is waiting.
New article published
2m5 web-push tactics that actually convert.
Higher
CTR than email*
<1s
delivery time
<1s
typical delivery
iPhone too
Safari on iOS 16.4+*
Higher CTR
than email*
Free
in early access
Everything you need to bring users back
From the opt-in prompt to revenue attribution — one clean, honest platform, every feature included.
Opt-in prompts
Multiple prompt styles with scroll and exit-intent triggers — plus prompt A/B testing to lift your subscribe rate.
Segments & targeting
Slice your audience by country, page, language, tags, device or behaviour, and hit exactly the right people.
Rich notifications
Hero images, action buttons, your logo and emoji — notifications that stand out on desktop and Android.
Automations & drip
Welcome flows, multi-step drip sequences and event-triggered journeys that run on autopilot.
A/B testing + auto-winner
Test titles, copy and images. relaybell measures each variant and rolls out the winner automatically.
Smart send-time
Deliver at each subscriber's ideal moment, per timezone — so your message lands when people are actually looking.
Revenue attribution
Tie clicks to conversions and revenue, so every campaign shows the sales it actually drove.
Multi-language
Send each subscriber content in their own language from a single campaign — no duplicate sends.
RSS-to-push
Point relaybell at your feed and every new post goes out as a notification, automatically.
Quiet hours & caps
Set quiet hours and frequency caps so you reach people without ever wearing out your welcome.
Analytics & devices
Delivery, clicks, CTR and a full breakdown by device and browser — live in your dashboard.
AI copywriting assist
Stuck on wording? Generate on-brand titles and body copy in a click, then tweak and send.
Not just sends — a full re-engagement engine
The advanced tooling the big players gate behind higher tiers — automations, experimentation, attribution and timing — included from day one.
Automations & drip sequences
Welcome new subscribers, recover abandoned carts and fire event-triggered journeys — a whole lifecycle that runs without you.
- Welcome + multi-step drips
- Event-triggered sends
- Cart & win-back flows
A/B testing with automatic winner
Pit variants against each other on title, body or image. relaybell watches the results and promotes the best performer for you.
- Test copy & images
- Live variant metrics
- Automatic winner rollout
Revenue & conversion attribution
See past the click. Connect each notification to the conversions and revenue it produced, and double down on what pays.
- Click-to-conversion tracking
- Revenue per campaign
- ROI you can defend
Smart send-time & per-timezone
Reach every subscriber at their most-likely-to-engage moment in their own timezone — quiet hours and frequency caps respected.
- Per-timezone delivery
- Optimal send-time
- Quiet hours honoured
Rich, personalized notifications
Go beyond plain text. Add a hero image, your logo, and up to two action buttons — then greet every subscriber by name with merge tags like “Hi {name}”.
- Hero image banners & your brand logo
- Up to two tappable action buttons
- Merge tags for name, city and custom fields
- Emoji, deep links and custom click URLs
Your cart is waiting
nowHi Asha, your cart is waiting — finish checkout and save 15% today.
yourstore.com · via relaybell
Live in three steps
No SDK gymnastics. Paste a snippet and you're collecting subscribers.
Add the snippet
Drop one script tag on your site. relaybell handles the service worker and the opt-in prompt for you.
Grow subscribers with a prompt
Visitors opt in with one click. We capture device, country, language and your custom tags automatically.
Send & automate
Broadcast, target a segment, or schedule it. Track delivery, clicks and revenue in real time.
Works with any site
A one-line snippet, a full REST API, and native plugins for WordPress, WooCommerce and Shopify are all live today.
<script src="https://relaybell.com/relaybell-sdk.js"></script>
<script>RelayBell.init({ projectId: "YOUR_PROJECT_ID" })</script>Paste it just before </body>. That's the whole install.
Available today & coming soon
Prefer to build it yourself? The REST API and JavaScript SDK give you full control over targeting, scheduling and personalization.
Every major browser — including Apple
Standards-based Web Push (VAPID) on desktop and Android, plus Safari on macOS and iPhone.
Chrome
Desktop & Android
Safari
macOS 13+ · iOS 16.4+*
Firefox
Desktop & Android
Edge
Desktop & Android
Opera
Desktop & Android
Samsung Internet
Android
Brave
Desktop & Android
Any VAPID browser
Standards-based
*On iPhone & iPad, users add your site to the Home Screen once — the relaybell SDK detects iOS and guides them automatically.
Why web push?
Free to deliver, instant on-screen, and no inbox to fight for. Here's how it stacks up.
| Web push | SMS | ||
|---|---|---|---|
| Cost to deliver | Free | Low, but per-send fees | Per-message charge |
| Speed | Instant, on-screen | Minutes to hours | Fast |
| Inbox / spam | No inbox to fight | Spam & promo tabs | Filtering & opt-outs |
| Setup for users | One click, no app | Share email address | Share phone number |
* Industry norm: web push click-through rates typically run higher than email. Your results will vary.
Send a notification with one API call
Authenticate with a Bearer key, POST your payload — including merge tags, an image and a segment — and we deliver asynchronously. The response returns instantly.
- REST API + drop-in JavaScript SDK
- Targeting, scheduling and image uploads built in
- HMAC-signed webhooks & personalization out of the box
# Send to everyone — or a segment
curl -X POST https://relaybell.com/api/v1/notifications \
-H "Authorization: Bearer rb_live_••••" \
-H "Content-Type: application/json" \
-d '{
"title": "Hi {name}, your cart is waiting 🛒",
"body": "Complete your order and save 15% today",
"url": "https://yourstore.com/cart",
"image": "https://yourstore.com/banner.jpg",
"segment": "abandoned_cart"
}'Frequently asked questions
Straight answers — no fine print.
Is relaybell really free?
Yes. During early access relaybell is free for early adopters — no credit card required. You get up to 5,000 subscribers, unlimited notifications and every core feature.
Do my users need to install an app?
No. Web push works right in the browser. Visitors tap “Allow” once and start receiving notifications — nothing to download, no app store.
Which browsers and devices are supported?
Web push works across Chrome, Edge, Firefox, Opera, Brave and Samsung Internet on desktop and Android — and on Safari, including iPhone and iPad on iOS 16.4+ (after adding your site to the Home Screen). It's standards-based Web Push (VAPID), so coverage keeps growing.
What counts as a subscriber?
A subscriber is one browser on one device that has opted in to your notifications. If someone opts in on both their laptop and phone, that counts as two subscribers.
Are notifications personalized?
Yes. Use merge tags such as “Hi {name}” to personalize the title and body, and add images and action buttons for a rich, on-brand notification.
What happens after early access ends?
Paid plans arrive later — but early adopters lock in founder pricing. You will always get plenty of notice, and nothing changes for you mid-flight.
Free while we're in early access
Join the first wave, help shape relaybell, and lock in founder pricing.
₹0/mo
No credit card required
- ✓ Up to 5,000 subscribers
- ✓ Unlimited notifications
- ✓ Opt-in prompt & segments
- ✓ Rich + personalized notifications
- ✓ Automation & scheduling
- ✓ Analytics & device breakdown
- ✓ Developer API & SDK
- ✓ Quiet hours & frequency caps
Paid plans coming soon — early adopters lock in founder pricing.
Be an early adopter — start sending in minutes
Create a project, add the snippet, and bring your visitors back — free during early access.