What is double opt-in?

With double opt-in, a new subscriber has to click a confirmation link before receiving anything else.

Updated September 21, 2026 · 1 min read

In this article you will decide whether double opt-in is right for your store.

Steps

  1. Single opt-in: the person signs up and is subscribed right away.
  2. Double opt-in: the person signs up, receives a confirmation email, and is subscribed only after clicking the link in it.
  3. Double opt-in asks the subscriber to confirm access to their inbox. It helps reduce mistyped addresses and unwanted signups.
  4. Choose the setting that fits your signup process and consent requirements. Check that the confirmation email reaches subscribers and clearly explains the next step.
  5. You switch between them in Settings → Marketing double opt-in.

Try these steps in Sendvio

Enter your Shopify store name to open Settings: Marketing double opt-in in Sendvio, inside your Shopify admin. It opens in a new tab, so you can keep this guide alongside it. Shopify may ask you to sign in.

Follow the steps above to select the relevant item. Navigation for this task:

SendvioSettingsMarketing double opt-in
For my-store.myshopify.com, enter my-store. We remember it in this browser only.

Still need help?

Write to us and include your store name and, if it is about a message, the recipient's email or phone. We answer every email.

Email support@sendvio.com