---
title: "What is Double opt-in? | Chargezen"
description: "Double opt-in is a signup that is confirmed only after the person replies to or clicks a confirmation message."
url: "https://chargezen.com/glossary/double-opt-in"
lang: "en"
---

Canonical URL: https://chargezen.com/glossary/double-opt-in

# Double opt-in

Double opt-in (confirmed opt-in)

Email Marketing

Double opt-in is a signup that is confirmed only after the person replies to or clicks a confirmation message.

## What is Double opt-in?

With double opt-in, signing up sends a confirmation: a link for email, or a "Reply YES" text for SMS. The person joins only after confirming. **Pros:** proves the address or number belongs to the person, keeps typos and fake entries out, and gives you a clear consent record. **Cons:** some people never confirm, so the list grows slower. **In SmartyTap,** double opt-in is available for texts: turn on Require double opt-in, and new subscribers get a confirmation text and join after replying YES.

## Example

A visitor enters her number in a popup, gets "Reply YES to confirm texts from Acme," replies YES, and only then receives the welcome text.

## Why Double opt-in Matters

Confirmed subscribers complain less, bounce less and are easier to prove consent for.

## Double opt-in FAQ

Is double opt-in required by law?

Not in the US for email or texts, though some countries expect it. Carriers and inbox providers look kindly on it.

Does SmartyTap support double opt-in for texts?

Yes. Turn on Require double opt-in in SmartyTap settings; new subscribers confirm by replying YES.

## Explore More Terms

Browse our complete glossary of e-commerce and subscription terms.

[View Full Glossary](https://chargezen.com/glossary)