Email, SMS & WhatsApp

Every channel, sent exactly once

Email, SMS, WhatsApp and web push from one queue. One message per person, no surprise SMS bill.

Email on every plan, SMS & WhatsApp on Growth+.

The moment

This is Stem’s moment, every channel at once: email from your domain, SMS and WhatsApp on fair credits, never twice.

What Email, SMS & WhatsApp does

Email from your domain

Branded emails sent as your store, from your own domain on Starter+.

Fair SMS credits

One credit, one US SMS. Other countries cost in proportion, shown before sending.

WhatsApp & web push

Meta-approved WhatsApp templates and free web push, both from the same queue.

Deliverability guarded

Bounces, complaints and STOP replies are suppressed automatically. Quiet hours respect local time.

How it works

  1. Step 1: Connect your sending domain, or use ours, and pick the channels.

  2. Step 2: Set waves, quiet hours and a reminder. Credits are estimated first.

  3. Step 3: Bounces, complaints and STOP replies are handled for you.

Inside Email, SMS & WhatsApp

Inbox-ready from day one

SPF, DKIM and DMARC aligned, one-click unsubscribe headers included.

  • 2,500 to 200,000 emails per month
  • Your own sending domain on Starter+
  • Reply-To goes to your store email

Good to know

The details that make it work in a real store.

Generous email limits

2–3× more emails than similar apps at the same price.

No-loss SMS pricing

Country-based credits, so prices stay fair everywhere.

WhatsApp templates

Approved templates per language, billed with SMS credits.

Free web push

Push notifications never count against your limits.

Never twice

A uniqueness key per campaign, person and channel.

Or use Klaviyo

Let your email platform send instead, with ready flow templates.

Which plans include it

Email on every plan, SMS & WhatsApp on Growth+. 14-day trial on paid plans.

Compare plans

Email, SMS & WhatsApp FAQ

How are SMS messages charged?

With credits. One credit equals one SMS segment to the US or Canada. Other countries use more credits based on carrier cost, for example 4 for Australia or 9 for Germany. The estimate is shown before you send.

What if I run out of SMS credits?

SMS pauses but email still goes out, so nobody is left without an alert. On monthly plans you can enable auto top-up up to a cap you approve.

Do web push notifications count?

No. Web push is free and never counts towards your notification limit.

Ready to stop losing sold-out sales?

Install free or start a 14-day trial. The first 100 stores get 30% off, for life.