Regulation BroadNet answer

What is double opt-in?

Last reviewed July 22, 20261 min readReviewed by BroadNet engineering

Quick answer

Double opt-in is a two-step consent process: after a user signs up for messages, you send a confirmation asking them to confirm the subscription (for example by replying YES), and only add them once they do. It produces the cleanest, most defensible consent — proving the number's owner genuinely wanted the messages — which protects both deliverability and compliance for marketing programs.

Plain-language definitionVendor-neutralReviewed July 22, 2026

The long answer

Everything worth knowing, nothing that isn't.

§01

How it works

Step one, the user opts in (a form, a keyword); step two, you send a confirmation and only subscribe them when they confirm. This filters out typos, mistakes, and malicious signups. See /answers/sms-opt-in-best-practices.

§02

Why use it

Double opt-in yields verified, engaged subscribers and strong proof of consent, lowering complaint and opt-out rates and strengthening your compliance position. See /answers/sms-compliance-checklist.

§03

Single vs double

Single opt-in is lower friction but weaker proof; double opt-in trades a little sign-up friction for much cleaner consent. Higher-risk or regulated programs favour double. See /answers/what-is-dnc.

BNWritten by the BroadNet engineering team·Operating carrier-grade messaging since 2003, headquartered in Dubai·Editorial standards

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