Cordial is an enterprise B2C messaging platform serving retail, hospitality, and media brands with omnichannel messaging across email, SMS, mobile push, and web personalization. The unsubscribe mechanism uses the {{unsubscribe_url}} merge tag placed in email campaigns, and Cordial emits RFC 8058 headers automatically for authenticated sending domains. Consent is tracked at the contact profile level with cross-channel subscription state. This guide covers the tag, the enterprise omnichannel model, and how to verify the setup end to end.
Cordial unsubscribe link
| Tag syntax | {{unsubscribe_url}} |
| Placement | Auto-embedded in every campaign footer |
| Scope | Contact profile-level opt-out with cross-channel state |
| Config path | Admin > Messaging > Sender identity |
| RFC 8058 one-click | Yes, automatic for authenticated sending domains |
How to add the unsubscribe tag in Cordial
Place the merge tag exactly as shown below in the email template. Cordial replaces it at send time with a signed URL scoped to the recipient and campaign.
{{unsubscribe_url}}For custom HTML templates, wrap the tag in an anchor to render a proper hyperlink in the delivered email:
<a href="{{unsubscribe_url}}">Unsubscribe from this list</a>Auto-embedded in every campaign footer
Yes, automatic for authenticated sending domains The recipient's mailbox provider (Gmail, Yahoo) uses the List-Unsubscribe-Post header to expose the native one-click button on the message. Requires domain authentication with DKIM and DMARC.
Cordial enterprise B2C omnichannel means consent state unifies email, SMS, mobile push, and web across the contact profile. Retail and hospitality vertical use cases often require per-channel opt-out granularity since a customer may want SMS transactional confirmations but not marketing email. Configure per-channel scoping carefully to match customer expectations and jurisdiction-specific consent requirements.
Testing your Cordial unsubscribe link
- Send a test message to a controlled Gmail address you own via the Cordial campaign preview action
- Click the footer unsubscribe link and confirm the opt-out on the landing page
- Check the subscriber or contact record: the status should be Unsubscribed within seconds
- Verify the RFC 8058 headers in Gmail: open the message, click three dots, then Show original. Look for
List-UnsubscribeandList-Unsubscribe-Post: List-Unsubscribe=One-Click
Want the full 222-platform reference?
See the pillar guide with the compliance landscape, the RFC 8058 deep dive, and the unsubscribe tag for every ESP: How to add an unsubscribe link: the complete 2026 guide →
How to add the Cordial unsubscribe link (step by step)
- Open your campaign in the Cordial editor.
- Add or edit a text block in the footer.
- Insert the merge tag
{{unsubscribe_url}}. - Wrap it in an anchor:
<a href="{{unsubscribe_url}}">Unsubscribe</a>. - Configure the sender identity under Admin > Messaging > Sender identity.
- Send a test to a seed address and verify the rendered link routes to the Cordial-hosted preference page.
Enterprise B2C omnichannel
Cordial enterprise B2C omnichannel means consent state unifies email, SMS, mobile push, and web across the contact profile. Retail and hospitality vertical use cases often require per-channel opt-out granularity since a customer may want SMS transactional confirmations but not marketing email. Configure per-channel scoping carefully to match customer expectations and jurisdiction-specific consent requirements. Cross-channel journey orchestration honors master consent state.
RFC 8058 one-click headers
Cordial added RFC 8058 one-click unsubscribe automatically ahead of the Google and Yahoo February 2024 requirements. The List-Unsubscribe and List-Unsubscribe-Post headers inject on every marketing send from domains authenticated under Admin > Messaging. SPF and DKIM records must be verified. Enterprise multi-region deployments each honor RFC 8058 with regional infrastructure.
Retail and hospitality vertical use cases
Cordial retail and hospitality vertical use cases include loyalty program communications, event marketing, booking confirmations, and personalized product recommendations. Configure per-list scoping to distinguish transactional loyalty and booking confirmations from promotional broadcasts. Advanced segmentation and personalization drive per-recipient dynamic content across channels while respecting opt-out state.
Frequently Asked Questions
What is the Cordial unsubscribe tag?
The merge tag is {{unsubscribe_url}}. Cordial replaces it at send time with a signed URL scoped to the contact profile.
Does email opt-out stop SMS and push on Cordial?
Depends on configuration. Unified cross-channel consent propagates opt-out across channels. Per-channel scoping keeps SMS transactional active after email marketing opt-out.
Does Cordial support one-click unsubscribe for Gmail and Yahoo?
Yes, automatically for authenticated domains. Cordial injects List-Unsubscribe and List-Unsubscribe-Post headers on every marketing send.
Is Cordial suitable for retail loyalty programs?
Yes. Retail and hospitality vertical use cases include loyalty communications, event marketing, and booking confirmations with per-list transactional/promotional scoping.
How does Cordial compare to Iterable or Braze for enterprise?
All three target enterprise B2C omnichannel. Cordial emphasizes retail and hospitality verticals. Iterable focuses on cross-channel automation. Braze targets mobile-first brands. Vendor choice depends on vertical fit and mobile emphasis.
About the Author
Alaa · LinkedIn
Email infrastructure specialist with 8+ years of hands-on experience in SMTP, deliverability, and email verification. I’ve configured and troubleshot mail systems across Postfix, Exchange, and cloud relays, managed IP reputation and warmup campaigns, and built verification pipelines processing millions of addresses. My work spans DNS authentication (SPF, DKIM, DMARC, BIMI), bounce handling, blocklist monitoring, and compliance frameworks including CAN-SPAM and GDPR. I write every article on SMTPedia to give email professionals, developers, and marketers the accurate, RFC-grounded reference they need.
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