Anti-Spam Policy

Last updated: July 9, 2026

Candor Host takes email deliverability seriously. Every customer benefits from a hosting platform whose IP ranges are trusted by mailbox providers. Every customer is harmed when someone abuses that. This policy explains what we require and what we do when the rules are broken.

What we require of customers who send email

If you send any email — transactional, marketing, or otherwise — from a domain hosted on Candor Host, you agree to:

Compliance with anti-spam laws

  • U.S. CAN-SPAM Act. Every commercial email must include an accurate sender identification, a valid physical postal address, a clear opt-out mechanism, and honor opt-outs within 10 business days.
  • Canadian Anti-Spam Legislation (CASL). Explicit or implied consent required before sending commercial electronic messages to Canadian recipients.
  • UK/EU GDPR + PECR. Consent must be freely given, specific, informed, and unambiguous. No pre-checked boxes.
  • Any other jurisdiction where your recipients are located.

Consent-based sending

  • Send only to recipients who have given you meaningful, verifiable consent to receive email.
  • Do not send to purchased, rented, or scraped email lists. Ever. This is the single most common source of spam complaints.
  • Maintain records of consent that you can produce on request.

Proper email authentication

We provide the tools for you to configure:

  • SPF — authorize the sending servers for your domain.
  • DKIM — cryptographically sign outbound mail.
  • DMARC — publish a policy telling receivers what to do with mail that fails SPF and DKIM.

Sending email from a domain without properly configured SPF, DKIM, and DMARC significantly increases the chance your mail lands in spam and reflects poorly on the platform. We may throttle or block outbound mail from misconfigured domains.

Reasonable rate

For high-volume sending (typically over 5,000 messages per day), we require you to use a transactional email service (Postmark, Mailgun, Amazon SES, Google Workspace SMTP, or similar) rather than the built-in SMTP relay. This protects our IP reputation and improves your deliverability.

Bounce and complaint handling

  • Suppress and stop sending to hard-bounced addresses.
  • Remove complainants (unsubscribes, spam-report addresses) from your list within 10 business days, sooner where required by law.
  • Monitor and act on feedback loop reports from major mailbox providers.

What we do not allow

  • Purchased or scraped lists. No exceptions.
  • "Confirmed opt-in" without an actual confirmation email. Single opt-in is acceptable in some jurisdictions; misrepresenting your practice is not.
  • Email address harvesting from any source, including from other Candor Host customers.
  • Third-party affiliate email where you are sending on behalf of someone whose consent record you cannot verify.
  • Snowshoe spam — spreading identical messages across many domains or IPs to evade filters.
  • Email joe-jobbing — impersonating another domain to damage its reputation.
  • Backscatter — bounces sent to forged sender addresses.

Reports and enforcement

We monitor a range of signals to detect spam originating from our infrastructure, including feedback loop reports from mailbox providers, third-party blocklist entries against our IP ranges, spam-trap hits, and reports from mail administrators.

When we identify or are notified of spam sent from a Candor Host account, we may:

  1. Throttle outbound mail from the account while we investigate.
  2. Suspend SMTP for the account.
  3. Request an explanation and remediation plan.
  4. Terminate the account for continued or serious violations, per our Acceptable Use Policy and Terms of Service.

Repeat offenders are terminated and may not open a new account.

Reporting spam

If you have received spam from a domain hosted on Candor Host, report it to abuse@candorhost.com with the full message headers. See our Abuse Reporting Policy for details.

Transparency about our IP ranges

Our outbound mail IP ranges are published on our status page. If our ranges are listed on a blocklist that we can dispute, we will do so; if a listing is our responsibility, we will investigate and share what we find.

Contact

Questions? Email abuse@candorhost.com for spam reports, or legal@candorhost.com for policy questions.