Spotler Mail+ (formerly Webpower) is another Spotler group product serving Dutch and Northern European B2B marketing customers, distinct from the Spotler SendPro and Flowmailer products in the same group. The unsubscribe mechanism uses the {{unsubscribe}} merge tag auto-injected into every campaign footer, and Spotler Mail+ emits RFC 8058 headers automatically for authenticated sending domains. Consent is tracked at the contact level with GDPR-oriented double opt-in defaults for European markets. This guide covers the tag, the Spotler group product line, and how to verify the setup end to end.
Spotler Mailpro Webpower unsubscribe link
| Tag syntax | {{unsubscribe}} |
| Placement | Auto-embedded in every campaign footer |
| Scope | Contact-level opt-out with GDPR double opt-in |
| Config path | Settings > Sender identities > Email footer |
| RFC 8058 one-click | Yes, automatic for authenticated sending domains |
How to add the unsubscribe tag in Spotler Mailpro Webpower
Place the merge tag exactly as shown below in the email template. Spotler Mailpro Webpower replaces it at send time with a signed URL scoped to the recipient and campaign.
{{unsubscribe}}For custom HTML templates, wrap the tag in an anchor to render a proper hyperlink in the delivered email:
<a href="{{unsubscribe}}">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.
The Spotler group operates multiple product lines (SendPro, Flowmailer, Mail+ formerly Webpower, MailPro) from different acquisitions. Each product has slightly different template syntax and admin UI. Customers running multiple Spotler products should verify which product family a given account belongs to before applying merge tag conventions; cross-product templates require conversion.
Testing your Spotler Mailpro Webpower unsubscribe link
- Send a test message to a controlled Gmail address you own via the Spotler Mailpro Webpower 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
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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 Spotler Mail+ unsubscribe link (step by step)
Spotler Mail+ drag-and-drop templates include the unsubscribe link in the default footer, but custom HTML templates require the tag inserted manually.
- Open your campaign or template in the Spotler Mail+ editor.
- Add or edit a text block in the footer where the unsubscribe link should appear.
- Insert the merge tag
{{unsubscribe}}. Spotler Mail+ replaces it at send time with a signed URL scoped to the contact. - Wrap it in an anchor:
<a href="{{unsubscribe}}">Uitschrijven</a>for Dutch,Unsubscribefor English. - Configure the sending domain under Settings > Sender identities > Email footer.
- Send a test to a seed address and verify the rendered link routes to the Spotler-hosted preference page.
Spotler product family and cross-product templates
The Spotler group operates multiple product lines (SendPro, Flowmailer, Mail+ formerly Webpower, MailPro) from different acquisitions. Each product has slightly different template syntax and admin UI. Customers running multiple Spotler products should verify which product family a given account belongs to before applying merge tag conventions; cross-product templates require conversion when migrating between Spotler tools. Mail+ (formerly Webpower) focuses on Dutch and Northern European B2B customers, distinct from SendPro (mid-market SMB focus) and Flowmailer (transactional focus).
RFC 8058 one-click headers
Spotler Mail+ 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 > Sender identities. SPF and DKIM records must be verified. Dutch data residency defaults align with GDPR expectations for Northern European customers.
GDPR double opt-in and re-permission
Spotler Mail+ enforces double opt-in by default matching Dutch AVG (GDPR implementation) and broader EU regulatory expectations. Legacy accounts migrating from other ESPs with single opt-in contacts must run a re-permission campaign before campaign sends can proceed. Imported contacts without documented double opt-in are quarantined until confirmed. This is analogous to Maileon, BACKclick, and Evalanche DACH regulatory-first enforcement.
Frequently Asked Questions
What is the Spotler Mail+ unsubscribe tag?
The merge tag is {{unsubscribe}}. Spotler Mail+ replaces it at send time with a signed URL scoped to the contact. Use it inside an anchor: <a href="{{unsubscribe}}">Uitschrijven</a>.
How does Spotler Mail+ differ from Spotler SendPro?
Different Spotler group products from different acquisitions. Mail+ (formerly Webpower) focuses on Dutch and Northern European B2B customers. SendPro focuses on mid-market SMB. Flowmailer focuses on transactional. Each has slightly different template syntax and admin UI.
Does Spotler Mail+ support one-click unsubscribe for Gmail and Yahoo?
Yes, automatically for authenticated domains. Spotler Mail+ injects List-Unsubscribe and List-Unsubscribe-Post headers on every marketing send from domains verified under Settings > Sender identities.
Does Spotler Mail+ enforce double opt-in?
Yes by default matching Dutch AVG (GDPR) requirements. Legacy accounts migrating with single opt-in contacts must run a re-permission campaign. Imported contacts without documented double opt-in are quarantined until confirmed.
Can I migrate templates between Spotler products?
Requires conversion. Each Spotler product has slightly different template syntax and admin UI due to different acquisition histories. Cross-product template migration should be planned during vendor consolidation projects with test sends before full rollout.
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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