How do back-in-stock emails work?

Back-in-stock emails are the automated messages Simple Chat sends when inventory returns for a variant customers asked about. Subscribers who signed up in chat receive email when that variant is in stock again, using settings you control in the app.

Trigger: variant back in stock

Sending is driven by inventory, not a manual mailing list export.

• When a product variant comes back in stock, Simple Chat sends notification emails.
• All subscribers for that variant receive the message—everyone who opted in for that specific SKU.

You do not need to send individual emails per signup; the app handles delivery when restock conditions are met.

Who is on the recipient list

Subscriptions are tied to the variant the customer wanted.

• Only subscribers for that variant are notified when it restocks.
• Customers who asked about a different size, color, or SKU are not mixed into unrelated sends.

That keeps each email aligned with what the shopper actually tried to buy.

What you can customize in settings

Merchants control presentation and timing from your settings in Simple Chat.

• Email template — customize the body content customers see.
• Subject line — set how the message appears in the inbox.
• Restock threshold — configure when a variant counts as back in stock for the purpose of sending notifications.

Adjust these to match your brand voice and how conservatively you want to treat “in stock” before emailing waitlists.

End-to-end flow from chat to inbox

1. A customer hits an out-of-stock product in chat and opts into notification (email provided or auto-detected if logged in).
2. Simple Chat records the subscription for that variant.
3. When the variant meets your restock rules, the app emails all subscribers for that variant automatically.

From signup through send, the workflow stays hands-off for your support team while remaining configurable in settings.