---
title: "FAQ about Email Double Opt-In"
slug: "faq-about-email-double-optin"
description: "This FAQ page answers questions about double opt-in."
tags: ["2 step optin", "double optin", "double optin email", "email double optin", "two step optin"]
updated: 2026-02-18T07:08:36Z
published: 2026-02-18T07:08:36Z
canonical: "academy.insiderone.com/faq-about-email-double-optin"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://academy.insiderone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# FAQ about Email Double Opt-In

### Will users who do not confirm double opt-in receive email messages from my campaigns?

It depends on your default opt-in setting in Email Settings.

- With **Double Opt-in** selected, only confirmed contacts receive campaign emails.
- With **Single Opt-in** selected, contacts may receive campaign emails without having to confirm.

To limit delivery to confirmed subscribers, set the default opt-in to Double Opt-in.

### Are double opt-in emails delivered to users with no opt-in status?

Yes, double opt-in emails are classified as transactional emails. This means that they will go to users' inboxes regardless of their email opt-in status. That's why double opt-in emails within an [Architect](/docs/introduction-to-architect) scenario will be delivered to users without consideration of their opt-in status.

### Can I send promotional content in double opt-in emails?

No, the double opt-in emails should not contain any promotional content.

### Can I send double opt-in emails without an Architect flow?

If there is no relevant Architect flow, you won’t be able to deliver the double opt-in emails. If the double opt-in checkbox is not checked in the Design step of your email, then you won't be able to send double opt-in emails.

![](https://cdn.document360.io/c6df4583-da94-4cb2-bb8a-be0cbdd11109/Images/Documentation/4aa0ec30-dbc5-40f6-a54b-4780717afc62(1).png)

Also, if you do not mark the Lead Collection double opt-in checkbox, you won't be able to send double opt-in emails.

![](https://cdn.document360.io/c6df4583-da94-4cb2-bb8a-be0cbdd11109/Images/Documentation/Screen%20Shot%202022-03-02%20at%2013.36.50(1).png)

> [!NOTE]
> The double opt-in users are stored in a separate database, where their timestamps and IP addresses are logged in case any justification is needed.

> [!NOTE]
> Your template must include a Double-Opt-in tag, allowing users to opt in to your campaigns.

### What happens when a user is unsubscribed from an email campaign?

When a user unsubscribes, the **Email Double Optin** attribute on their profile is automatically set to *false*. This does not impact the account or affect product usage in any way; it simply reflects the user’s updated subscription status.

### How does the double opt-in attribute (email_double_optin) change when email_optin changes?

When a user opts in and confirms double opt-in, both the **email_optin** and **email_double_optin** attributes' values change to **True**.

When a user opts out, the values of both the **email_optin** and **email_double_optin** attributes change to **False**.

When a user resubscribes, they need to confirm the double opt-in again so that the values of both the **email_optin** and **email_double_optin** attributes are set to **True**. Upon resubscription, Insider One requires the end user to provide explicit double-opt-in consent again.

## Related

- [Double Opt-In Emails for New Users](/double-opt-in-emails-to-new-users.md)
- [Double Opt-In Emails for Leads](/double-opt-in-emails-for-leads.md)
- [Create a Double Opt-In Flow](/create-double-opt-in-flow.md)
- [Introduction to Email Double Opt-In](/introduction-to-email-double-opt-in.md)
- [Enable Email Double Opt-In for Your Account](/enable-email-double-opt-in-for-your-account.md)