Acceptable Use Policy (AUP)

Last Updated: March 20, 2026
Effective Date: Immediately
Applies To:

• https://www.sendarix.com
• https://app.sendarix.com (Client Dashboard)
• All SMTP & Email API endpoints

This AUP is part of the Terms of Service. It is designed to keep the platform safe and deliverable for all customers.

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1. Introduction

This Acceptable Use Policy (“AUP”) defines permitted and prohibited use of Sendarix Services. You must follow it to protect platform stability, deliverability, reputation, and compliance with global anti-abuse and privacy expectations.

Violations may result in throttling, suspension, termination, loss of unused credits without refund, reporting to ISPs or authorities, and legal action where appropriate.

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2. Prohibited content & activity

2.1 Spam & unsolicited email

• Purchased, scraped, harvested, rented, or broker “lead” lists
• Bulk cold outreach without provable consent where required
• UBE/UCE or any sending without appropriate permission and list hygiene

Sendarix maintains zero tolerance for spam.

2.2 Illegal or harmful content

• Phishing, fraud, scams, impersonation of brands or individuals
• Malware, ransomware, spyware, or credential harvesting
• CSAM or exploitation; trafficking; illegal weapons or drugs
• Forged headers, deceptive routing, or filter evasion

2.3 High-risk & restricted promotions

• Adult or escort services; unlicensed gambling
• Deceptive crypto, investment, or “get rich quick” schemes
• Fake giveaways, lottery scams, miracle-cure health claims
• Political or issue campaigns without prior written approval where we require it
• Services marketed for spamming, flooding, or botnets

2.4 Reputation abuse

• Domain or IP warming evasion, snowshoe patterns, or domain rotation to bypass filters
• Sending that foreseeably causes major blocklistings or provider sanctions

2.5 Infrastructure misuse

• Operating or facilitating an open relay or allowing third parties to send through your account without proper authentication and authorization
• Reselling, sublicensing, or pooling access to the Service in ways that conceal the true sender or evade limits
• Sharing API keys or SMTP credentials publicly or with untrusted parties
• Stress testing, DDoS, credential stuffing, or attempts to break authentication

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3. Sending requirements

3.1 Lists & consent

• Permission-based lists with working unsubscribe or preference management as applicable
• Prompt removal of hard bounces and complaint-driven suppressions
• Truthful “From” identities and valid contact/address information where required by law

3.2 Authentication & technical

• SPF, DKIM, and DMARC aligned with your sending domains where practicable
• Stable DNS; TLS for SMTP submission where supported
• Use only documented ports and APIs

3.3 Volume & warming

New or low-reputation senders may be subject to ramp schedules, caps, or manual review. Sudden spikes may trigger safeguards.

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4. Quality thresholds (indicative)

We may throttle or suspend if metrics indicate list or content problems, including for example:

• Spam complaints materially above responsible industry norms for your mail type
• Hard bounces or invalid recipients at levels that indicate poor list quality
• Repeated blocklist or abuse desk escalations

Exact thresholds may vary by plan, region, and risk profile.

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5. Security

You must protect credentials, enable prudent access controls, and notify us immediately of compromise or unauthorized sending at abuse@sendarix.com.

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6. Monitoring & enforcement

We may analyze technical metadata, traffic patterns, and abuse signals (including automated systems) to protect the Service. Manual review may occur when risk is elevated. We may request evidence of list permission practices.

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7. Consequences

We may act without prior notice for severe or ongoing abuse. Remedies are cumulative with rights in the Terms.

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8. Reporting abuse

Reports: abuse@sendarix.com. Include full headers and relevant message samples.

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9. Changes

We may update this AUP by posting changes on <strong>www.sendarix.com</strong> or the Dashboard. Continued use constitutes acceptance where permitted by law.