Mission Inbox vs. Mailgun

BLUF

Mailgun is a developer-first transactional email API — great for receipts and notifications, but terrible for cold outreach. It restricts cold email via compliance filters, uses shared IPs, and offers no domain protection.

Feature Comparison

Mailgun's Limitations

Built for Receipts, Not Prospecting

Mailgun is a developer-first API for transactional emails: password resets, order confirmations, notifications. Their compliance filters flag cold email as "unsolicited" and restrict accounts.

Cold Email Restrictions

Mailgun's Terms of Service restrict "unsolicited emails." Cold outreach gets flagged and volume gets limited automatically.

Strict Compliance Filters

Built for transactional use cases, Mailgun blocks non-compliant sending patterns that are common in sales outreach.

Shared IP Pools

Users share IP addresses with other senders. Blacklists and reputation issues from other senders affect your deliverability.

How Mission Inbox Differs

Outreach-Friendly Policy

Mission Inbox is built for cold email outreach. No policy violations, no bans, no restrictions on legitimate prospecting.

Isolated Infrastructure

Every customer gets isolated servers and dedicated IPs. Your reputation is never affected by other senders.

MI Shield™ AI Protection

Every email is scanned by MI Shield before it leaves the server. Spam patterns are blocked proactively.

Fast Setup

Connect SMTP credentials and authenticate your domain. Under 5 minutes from signup to first send.

When to Choose Each

Updated on: 27/02/2026