Acceptable Use Policy

This Acceptable Use Policy (the “AUP”) describes what you can and can't do with MailSprout. It applies to every account, every domain, and every email you send through the service. MailSprout is operated by Florida Sound Man LLC d/b/a MailSprout. By using MailSprout you agree to this AUP along with our Terms of Service and Privacy Policy.

MailSprout's mail infrastructure is operated by MxRoute (a service of TuxByte, LLC). MxRoute's own terms at mxroute.com/terms (opens in a new tab) apply in parallel, and where they are stricter than this AUP, the stricter rule wins. We pass through MxRoute's restrictions because their decisions affect every MailSprout customer.

The short version

Use MailSprout for real, human-to-human business email to people who want to hear from you. Don't use it to spam, market, defraud, harass, distribute malware, or otherwise harm anyone. If you're unsure whether something crosses a line, email support@mailsprout.io and ask first.

MailSprout is not a marketing platform, a newsletter platform, or a cold-outreach platform. For those, use Postmark, Resend, SendGrid, Mailgun, Beehiiv, ConvertKit, or another tool built for that purpose. Full detail in the Marketing Email Policy.

Sending limits (hard)

Each email account is limited to 400 outbound messages per hour, enforced by our mail infrastructure. You may not create additional email accounts on your own domains for the purpose of getting around that limit. This is a per-account, per-hour rolling cap that applies on every plan.

Forwarders count toward this limit too. If you set up a forwarder that bursts above 400 per hour, the forwarder will be throttled or disabled.

MailSprout is for transactional and normal business correspondence only. It may not be used to send marketing, bulk, or unsolicited email, regardless of opt-in status. You may not create additional accounts, on the same or different domains, to circumvent the per-account sending limit. Violations may result in immediate suspension to protect the platform and its shared deliverability reputation, in addition to the incident fee described below.

What you can't do

You agree not to use MailSprout to:

1. Send spam or unsolicited bulk email. Every recipient must have given you direct, verifiable consent or have a prior business relationship with you.
2. Send marketing email or newsletters. MailSprout is for transactional and human-to-human business mail only. Marketing and newsletter sending are prohibited regardless of opt-in status, because they damage shared IP reputation. Use a dedicated platform.
3. Run a mailing list without double opt-in. Any list you send to from MailSprout must use double opt-in: the recipient signs up, then confirms via a click in an email. Lists imported from elsewhere without double-opt-in records are not allowed.
4. Spoof the From header. You may only send mail with a From address on a domain you own or have authorization to manage. No sending as a third party.
5. Use “warmup” services such as instantly.ai, Mailwarm, Lemwarm, Warmbox, or similar automated-reply networks.
6. Send cold outreach at scale. One-off founder-to-prospect emails are fine. Sequenced cold-outreach campaigns are not.
7. Send SMS through email-to-SMS gateways.
8. Phish, defraud, or impersonate. No fake-bank notices, no impersonation of brands or people, no social-engineering attacks.
9. Distribute malware, link to malicious sites, or send content designed to compromise a device or account.
10. Violate the law. This includes CAN-SPAM (US), CASL (Canada), GDPR and the e-Privacy Directive (EU/UK), and any other anti-spam, anti-fraud, privacy, or export-control laws that apply where you or your recipients are.
11. Harass, threaten, dox, or target individuals on the basis of who they are.
12. Send sexually explicit content involving minors. This results in immediate permanent termination and reporting to law enforcement.
13. Infringe intellectual propertyor send content you don't have the right to send.
14. Add domains you don't own or have written authorization to send mail from.
15. Send to consistently invalid recipients or to recipients who have unsubscribed or reported your prior messages as spam.
16. Run a leak forum, adult forum, or counterfeit-ecommerce operation on a domain you connect to MailSprout. These categories are categorically refused service by our upstream provider.
17. Use v2board or similar account-distribution platforms with MailSprout addresses.
18. Resell MailSprout as a service to third parties without our written permission.
19. Probe, scan, or attempt to disruptMailSprout's infrastructure, our subprocessors' infrastructure, or our other customers' accounts.
20. Send hundreds of emails at a time to a single mail provider (for example, qq.com), where the pattern looks like an automated blast.

DNS requirements

Every domain you connect to MailSprout must have valid SPF and MX records as published in your domain detail page. We won't enable an account on a domain that's missing either one. If you remove or alter those records after activation, your domain will fall out of compliance and outbound mail will be suspended until you fix it.

What happens when a recipient reports your message as spam

Our upstream mail provider auto-blocks outbound mail to any address that clicks “Report Spam” on a message from your account. This block is per recipient and is not under our control. Repeated spam reports against your account will trigger a review and likely suspension.

What happens if you violate this policy

We reserve the right to suspend or terminate any account that violates this AUP, that we reasonably believe poses a legal or operational risk to MailSprout or other customers, or that puts our shared deliverability reputation at risk. Depending on severity we may:

• Send you a warning and ask you to stop the activity.
• Suspend outbound sending on the offending account or domain.
• Suspend the whole MailSprout account pending investigation.
• Terminate the account permanently and refuse future signups.
• Bill you an incident fee when your account triggers a penalty charge from our upstream provider. Intentional unsolicited marketing currently triggers a $1-per-email charge to us from MxRoute. We bill that back to your account at $2 per offending email ($1 covers the upstream fee, $1 covers our incident-response, customer-communication, and reputation-recovery costs). The fee is charged to your card on file when we confirm the violation. The charge appears on your Stripe invoice history. Incident fees are not capped; you are responsible for the full amount assessed against your account.
• Chargebacks trigger termination. Opening a payment dispute with your bank or card issuer harms our payment-processing standing and triggers immediate termination of your account. Email support@mailsprout.io first if you have a billing problem; we resolve real issues without disputes.
• Report the activity to law enforcement or the relevant authorities.
• Share your account information (name, email, phone, address, IP, signup domain, billing email) with anti-fraud databases including FraudRecord.com, as required by our upstream provider's terms.

For severe or illegal activity (CSAM, active phishing campaigns, malware distribution, credible threats of violence) we'll act immediately and without notice. Accounts terminated for AUP violation are not eligible for the 30-day money-back guarantee.

Reporting abuse

If you receive a message from a MailSprout account that violates this policy, email abuse@mailsprout.io with the full message including headers. We review every report and aim to respond to credible abuse complaints within one business day.

Changes

We may update this AUP from time to time. Material changes will be emailed to active subscribers at least 30 days before taking effect. Continued use of MailSprout after changes take effect constitutes acceptance. The current version is tracked at the top of this page. When you signed up you agreed to the version in effect at that time, and you'll be asked to re-accept material changes via a dashboard prompt.

Contact

Florida Sound Man LLC d/b/a MailSprout
Abuse reports: abuse@mailsprout.io
General support: support@mailsprout.io

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