Sendlane is an e-commerce-focused email marketing platform serving Shopify, WooCommerce, and BigCommerce merchants with revenue-attributed automation, SMS, and email flows. The unsubscribe mechanism uses the {{unsubscribe_url}} merge tag auto-injected into every campaign footer, and Sendlane emits RFC 8058 headers automatically for authenticated sending domains. Consent is tracked at the subscriber level with per-list and account-wide opt-out variants. Native e-commerce integrations sync opt-out state to the store customer record. This guide covers the tag, the e-commerce integration model, and how to verify the setup end to end.
Sendlane unsubscribe link
| Tag syntax | {{unsubscribe_url}} |
| Placement | Auto-embedded in every campaign footer |
| Scope | Subscriber-level opt-out with e-commerce store sync |
| Config path | Settings > Email > Sender configuration |
| RFC 8058 one-click | Yes, automatic for authenticated sending domains |
How to add the unsubscribe tag in Sendlane
Place the merge tag exactly as shown below in the email template. Sendlane 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.
Sendlane e-commerce store integration syncs opt-out state to the Shopify or WooCommerce customer record only when the two-way sync toggle is enabled. Without it, a Sendlane unsubscribe leaves the store customer record marked as opted-in, corrupting downstream integrations reading consent from the store. Enable two-way sync during initial integration setup.
Testing your Sendlane unsubscribe link
- Send a test message to a controlled Gmail address you own via the Sendlane 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 Sendlane unsubscribe link (step by step)
Sendlane drag-and-drop templates include the unsubscribe link in the default footer, but custom HTML templates and flow-triggered emails may require the tag inserted manually.
- Open your campaign or flow email in the Sendlane editor.
- Add or edit a text block in the footer where the unsubscribe link should appear.
- Insert the merge tag
{{unsubscribe_url}}. Sendlane replaces it at send time with a signed URL scoped to the subscriber. - Wrap it in an anchor:
<a href="{{unsubscribe_url}}">Unsubscribe</a>. - Configure the sending domain under Settings > Email > Sender configuration.
- Send a test to a seed address and verify the rendered link routes to the Sendlane-hosted preference page.
E-commerce store integration and opt-out sync
Sendlane e-commerce store integration syncs opt-out state to the Shopify, WooCommerce, or BigCommerce customer record only when the two-way sync toggle is enabled. Without it, a Sendlane unsubscribe leaves the store customer record marked as opted-in, corrupting downstream integrations reading consent from the store (support tools, loyalty programs, personalization engines). Enable two-way sync during initial integration setup to prevent this. Abandoned cart flows respect the opt-out flag: an unsubscribed customer does not receive cart recovery emails, only transactional order confirmations.
RFC 8058 one-click headers
Sendlane 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 Settings > Email > Sender configuration. SPF and DKIM records must be verified. SMS opt-outs are handled through STOP keyword replies and tracked separately from email consent unless cross-channel enforcement is enabled.
Revenue attribution and flow enforcement
Sendlane distinguishing feature is revenue attribution per email, flow, and subscriber, integrated with the e-commerce store transaction data. Opt-out events also update the revenue attribution model: a high-LTV customer who opts out reduces expected future revenue in forecasts, informing re-engagement strategy. Flow-based automations respect the opt-out flag at each send step and can be configured with exit criteria that route unsubscribed customers to alternative paths (win-back series, SMS opt-in prompts, cross-channel re-engagement).
Frequently Asked Questions
What is the Sendlane unsubscribe tag?
The tag is {{unsubscribe_url}}. Sendlane replaces it at send time with a signed URL scoped to the subscriber. Use it inside an anchor: <a href="{{unsubscribe_url}}">Unsubscribe</a>.
Does Sendlane sync opt-outs to Shopify and WooCommerce?
Yes when the two-way sync toggle is enabled. Without it, a Sendlane unsubscribe leaves the store customer record marked as opted-in. Enable two-way sync during initial integration setup to keep consent consistent across email and the store back office.
Does Sendlane support one-click unsubscribe for Gmail and Yahoo?
Yes, automatically for authenticated domains. Sendlane injects List-Unsubscribe and List-Unsubscribe-Post headers on every marketing send from domains verified under Settings > Email > Sender configuration.
Does an email opt-out stop Sendlane SMS?
Not by default. Email opt-out applies only to the email channel. SMS opt-outs are handled through STOP keyword replies and tracked separately. Enable cross-channel enforcement to sync opt-outs across email and SMS simultaneously.
Do abandoned cart flows honor Sendlane unsubscribes?
Yes. Abandoned cart flows respect the marketing opt-out flag: an unsubscribed customer does not receive cart recovery emails, only transactional order confirmations that bypass marketing consent as required by e-commerce transactional exemptions.
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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