Sendloop is a Turkish email marketing platform popular with SMBs and agencies in Turkey and Central Asia, with a mature template library and Amazon SES-based sending infrastructure. The unsubscribe mechanism uses the [UNSUBSCRIBE_URL] merge tag auto-injected into every campaign footer, and Sendloop emits RFC 8058 headers automatically for authenticated sending domains. This guide covers the tag, the multi-language template configuration common in the Central Asian market, and how to verify the setup end to end.
Sendloop unsubscribe link
| Tag syntax | [unsubscribeurl] |
| Placement | Auto-embedded in every campaign footer |
| Scope | Per-mailing-list opt-out with preference center |
| Config path | Settings > Company info > Physical address (required) |
| RFC 8058 one-click | Yes, automatic once sending domain is authenticated with SES |
How to add the unsubscribe tag in Sendloop
Place the merge tag exactly as shown below in the email template. Sendloop replaces it at send time with a signed URL scoped to the recipient and campaign.
[unsubscribeurl]For custom HTML templates, wrap the tag in an anchor to render a proper hyperlink in the delivered email:
<a href="[unsubscribeurl]">Unsubscribe from this list</a>Auto-embedded in every campaign footer
Yes, automatic once sending domain is authenticated with SES 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.
Sendloop runs sends through Amazon SES on the backend, which means the sending IP reputation is shared across Sendloop customers. For high-volume senders, request a dedicated IP through Sendloop Support or your reputation gets mixed with other Sendloop customers, potentially hurting inbox placement.
Testing your Sendloop unsubscribe link
- Send a test message to a controlled Gmail address you own via the Sendloop 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 Sendloop unsubscribe link (step by step)
The Sendloop drag-and-drop editor injects the unsubscribe link into the default footer block on every new campaign. If you use a custom HTML template or need the link somewhere other than the footer, follow these steps.
- Open your campaign or template in the Sendloop editor.
- Add or edit a text block where the unsubscribe link should appear.
- Insert the merge tag
[UNSUBSCRIBE_URL]. Sendloop replaces it with a signed URL unique per recipient at send time. - Wrap it in an anchor with your preferred label:
<a href="[UNSUBSCRIBE_URL]">Unsubscribe</a>. Localize the label if you send in multiple languages (Turkish, English, Russian are common on Sendloop). - Preview to a test recipient. The rendered link should point to a Sendloop-hosted opt-out page and confirm removal on click.
- Verify the physical postal address block is present (Sendloop pulls it from account settings).
How Sendloop handles unsubscribes
Clicks route to a Sendloop-hosted opt-out page that confirms the removal and adds the contact to the account suppression list. The email editor rejects campaigns that lack the required unsubscribe mechanism. Consent is tracked at the mailing list level with a preference center option available.
List and account-level opt-outs
Sendloop defaults to list-scoped opt-outs: a subscriber unsubscribes from the specific mailing list associated with the campaign, preserving membership in other lists. Account settings can force account-wide unsubscribes for senders operating a single-brand model. The choice depends on the sender business structure; multi-brand accounts benefit from list scoping, while single-brand accounts should force account-wide scope to align with subscriber expectations.
RFC 8058 support
Sendloop added RFC 8058 one-click unsubscribe headers to meet the Google and Yahoo bulk-sender requirements. Domains authenticated through the Sending Domains configuration (SPF and DKIM records verified) receive automatic List-Unsubscribe and List-Unsubscribe-Post header injection. This is essential for accounts sending significant volume to Gmail; without authenticated domains, one-click headers are absent and deliverability degrades.
GDPR considerations for Turkish and European senders
Sendloop operates in the European regulatory environment as well as its home market in Turkey, and its unsubscribe workflow reflects GDPR requirements: consent records are tracked per subscriber, unsubscribes are honored immediately, and reactivation requires a fresh double opt-in confirmation. The account interface exposes consent history for audit purposes. Turkish KVKK compliance adds additional consent requirements that mirror GDPR closely, and Sendloop is oriented around both frameworks by default.
Frequently Asked Questions
What is the Sendloop unsubscribe merge tag?
The tag is [UNSUBSCRIBE_URL]. Sendloop replaces it with a signed URL unique per recipient at send time. Use it inside an anchor: <a href="[UNSUBSCRIBE_URL]">Unsubscribe</a>.
Does Sendloop support one-click unsubscribe for Gmail and Yahoo?
Yes, provided the sending domain is authenticated (SPF + DKIM verified in Sending Domains). Sendloop injects List-Unsubscribe and List-Unsubscribe-Post headers automatically for authenticated senders, satisfying the Google and Yahoo bulk-sender requirements.
Is Sendloop unsubscribe list-scoped or account-wide by default?
List-scoped by default. A subscriber unsubscribing from one mailing list stays on other lists. Change this under account settings to enforce account-wide scope, recommended for single-brand senders.
Can I customize the Sendloop unsubscribe page?
Yes. The Sendloop-hosted opt-out page supports branding (logo, colors, language). Multilingual accounts common in the Central Asian market can serve the opt-out page in Turkish, English, or Russian based on subscriber preference.
Can I resubscribe someone who unsubscribed from Sendloop?
Not directly through the API. Sendloop enforces suppression on opt-outs; the subscriber must re-opt in through a signup form on your site, triggering a fresh double opt-in confirmation. This aligns with GDPR and Turkish KVKK requirements.
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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