Double opt-in for HubSpot marketing email: what it does and what it limits

1. Where it lives

Open email settings, and click the Double opt-in tab. HubSpot's summary: double opt-in makes contacts explicitly confirm their subscription before they start receiving messages. The tab lists the benefits it claims, including better engagement and sender reputation, fewer spam complaints, and support for data privacy compliance, and has a Set up double opt-in button.

2. How it works

1. A contact signs up on a form.
2. They receive a confirmation email.
3. After they click the link, they are added to your subscriber list and can receive marketing email.

HubSpot says contacts created through HubSpot forms, non-HubSpot forms, lead ad forms, or the Forms API get the follow-up email, and you cannot email them until they confirm.

3. Who counts as confirmed

• Existing contacts you previously sent marketing email to in HubSpot.
• Existing contacts sent a double opt-in email who click the link.
• New contacts who convert on an applicable form and click the link.

4. Limits to know

• Marketing email only. It cannot manage WhatsApp or SMS subscriptions.
• Tied to the email address. If a contact's primary email changes, the old confirmation does not carry over.
• Workflows. A workflow that sends to an unconfirmed contact retries for up to one day, then stops.
• Basic vs advanced. Starter and free tools get basic double opt-in for all forms and pages with a default confirmation email, though the sender, language, and subject line can be customized.

Sources

• HubSpot Knowledge Base: Set up double opt-in for emails
• HubSpot Knowledge Base: Understand double opt-in confirmation status
• HubSpot Knowledge Base: Understand opt-in consent for email