Marketing Email Policy

What we prohibit

You may not use MailSprout to send:

• Newsletters, regardless of opt-in status or recipient consent.
• Promotional campaigns, sales sequences, or product announcements at scale.
• Cold-outreach sequences. One-off founder-to-prospect emails are fine. Sequenced outreach is not.
• Anything an email-marketing platform exists to do.

What we allow

Normal human-to-human business email. Some examples:

• Replying to customers, quoting jobs, sending invoices.
• Team email between employees at your own company.
• One-to-one outreach a real person writes to a real other person.
• Transactional notes a person sends in the course of doing business (a contractor confirming an appointment with their customer, for example).

Why this rule exists

1. Shared IP reputation.Every MailSprout customer sends from the same pool of mail server IPs. One sender blasting newsletters from those IPs lowers deliverability for every other customer. The rule protects everyone else's inbox placement.
2. Our upstream provider enforces it. MxRoute, who runs the mail infrastructure beneath MailSprout, prohibits marketing email by contract and assesses a $1-per-email fee for unsolicited marketing they detect. We pass that fee through to the offending account at cost.
3. The product is built for a different job. MailSprout exists so a normal business can give every employee a real email address on its own domain. It is not built to send to lists, schedule campaigns, manage subscriber preferences, or report on campaigns. A marketing tool will serve you better.

Use these instead

If you need to send marketing email, these tools are built for that work:

• Klaviyo or Mailchimp for newsletters and promotional campaigns.
• Beehiiv or ConvertKit for creator newsletters.
• Postmark, Resend, or SendGrid for application-sent transactional mail (password resets, receipts, system notifications).
• Apollo, Outreach, or Lemlist (the outreach tool, not the Lemwarm warmup service, which is prohibited under the AUP) for sales outreach at scale, where it is legal where you and your recipients are.

You can run any of those tools alongside MailSprout. They send from their own infrastructure on a separate sending domain or subdomain. MailSprout handles your normal business email. The two do not conflict.

How we enforce this

When we detect marketing-pattern sending or receive complaints, we act in this order, depending on severity:

• Warn you and ask you to stop.
• Suspend outbound sending on the offending account or domain.
• Suspend the whole MailSprout account pending investigation.
• Pass through the $1-per-email fee from our upstream provider for any unsolicited marketing they detect.
• Terminate the account permanently.
• Refuse future signups.

For knowing or repeated violations, we will skip the warning. Accounts terminated for marketing-policy violations are not eligible for the 30-day money-back guarantee.

If you are not sure

Email support@mailsprout.io with a description of what you want to send and a sample. We will tell you whether it is allowed before you send. We would much rather answer the question in advance than enforce after the fact.

Related rules

This is one section of the broader Acceptable Use Policy, which also covers spam, fraud, malware, sending limits, and DNS requirements. The AUP is the authoritative document. This page exists to make the marketing rule findable on its own.

Read the full Acceptable Use Policy → · Terms of Service →