---
title: Double opt-in
description: "Double opt-in is an email subscription process that requires users to confirm their consent twice: first by signing up, and then by clicking a verification link."
---

[B2B marketing glossary ](https://mixology-digital.com/glossary)

# [Double opt-in](https://mixology-digital.com/glossary/double-opt-in)

 Written by [Mixology Digital](https://mixology-digital.com/glossary/author/mixology-digital) | Nov 14, 2025 11:55:16 AM

Double opt-in is an email subscription process that requires users to confirm their consent twice: first by signing up, and then by clicking a verification link. It’s a best practice for ensuring [list quality](https://mixology-digital.com/glossary/list-hygiene) and compliance with global privacy laws.

For B2B marketers, double opt-in prevents spam traps and ensures that only genuinely interested contacts enter [nurture programmes](https://mixology-digital.com/glossary/nurture-workflow). Though it may slightly reduce initial list size, the result is higher engagement, deliverability, and trustworthiness across all communications.

[View full post](https://mixology-digital.com/glossary/double-opt-in)

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