Collect emails when inventory is out of stock?

Technical Q&A
,

Topic summary

Main issue: Store owner wants to collect customer emails for back‑in‑stock notifications when inventory is out.

What’s proposed:

  • Recommendation to use a third‑party email platform (Klaviyo or Mailchimp) and follow a shared Klaviyo setup guide (link provided in thread).

Concerns and constraints:

  • Another participant reports surprise that Shopify lacks a built‑in solution and says they couldn’t find a dedicated app.
  • They state Klaviyo didn’t work with their custom theme (a non‑default Shopify theme, even one purchased via Shopify), noting broader compatibility issues with custom themes.
  • They avoid Mailchimp due to integration reviews and currently use MailerLite, asking for alternatives that work with custom themes.

Key context:

  • A setup link to Klaviyo’s help article is central to the suggested approach.

Status/outcome:

  • No confirmed resolution. The request for a solution compatible with custom themes (and potentially MailerLite) remains unanswered and the discussion is open.
Summarized with AI on January 14. AI used: gpt-5.
1

Hello

My inventory is out of stock and I am looking to have a sign up form prompting people to enter their emails to get emailed when it will be in stock. Can I do this through shopify or do I have to get an app?

2

Hello @FS1949 ,

You have to use Klaviyo or mailchimp to do it.
Please check the instructions here https://help.klaviyo.com/hc/en-us/articles/360001895651

Thanks

1 Like
3

Just came looking for this same solution and am super surprised to see that this isn’t a) a standard Shopify thing and b) there is no actual app like is Shopify’s typical MO. Klaviyo doesn’t work with custom themes, which unfortunately is something we learned the hard way - don’t build your site with a custom theme (even if Shopify sells it - it is a custom theme!) because nothing works with it. We had a person build our site and now we are stuck with it. Is there another option to make it work with custom theme (that we paid shopify for) sites? We don’t use MailChimp as the reviews for the integration were not that great, so went with MailerLite instead. Thanks for any help you can provide!