Upsender enforces a zero‑tolerance policy toward spam. By using our services, you agree to our Terms of Use and this Anti‑Spam Policy. We partner with ISPs, ESPs, and global anti‑spam organizations to combat spam, phishing, and deceptive practices that threaten deliverability and trust.
Consequences for violations:
Warning → Rate limiting → Temporary suspension → Permanent termination.
Track record of your email activity must stay within these limits:
Metric | Definition | Acceptable Threshold |
Bounce Rate | % of undeliverable emails | < 7 % |
Unsubscribe Rate | % of recipients opting out per campaign | < 2 % (or < 1 % if it exceeds click rate) |
Spam Complaint Rate | % of recipients marking emails as spam | < 0.08 % (max 50 complaints/day) |
Spamtrap + Abuse Hits | Hits on spamtrap emails or unjustified abuse reports | < 1 per campaign |
Note: Thresholds may be updated without notice.
In cases of abuse escalation, be ready to provide:
Failure to produce proof may result in immediate suspension.
Do not send emails that:
Regulated industries (finance, healthcare, etc.) require a custom account and relevant documentation.
If you suspect abuse through Upsender:
Email: abuse@upsender.com
All complaints are investigated and acted upon swiftly.
Upsender reserves the right to modify this policy at any time. Changes may be effective immediately upon updating the policy date.