Does MI Shield slow down sending?

No. MI Shield is designed to analyse each email in under 50ms before it leaves your sending environment, so protection happens without adding meaningful delay to your send flow.

Does MI Shield work with SMTP and API sending?

Yes. MI Shield runs at the infrastructure level, so it protects every workload sent through Mission Inbox, whether you connect through SMTP, API or an integrated sending tool.

Do I need to configure anything?

No. MI Shield is included with every Cube and runs automatically. There is no separate setup, tuning or maintenance required.

What happens when a risky email is blocked?

The send is stopped before it leaves your infrastructure, so the issue can be reviewed and fixed before it creates negative signals against your domain or dedicated IP.

Does MI Shield replace my mailbox provider's spam filters?

No. Gmail, Outlook and other mailbox providers still make their own filtering decisions. MI Shield helps protect your reputation before your email reaches them by catching risk earlier in the sending chain.

Is email data used to train MI Shield?

Yes. MI Shield is trained on a consented dataset of more than 100 million emails and learns from inbox placement outcomes across the platform.

Infrastructure / MI Shield

AI protection that stops spam-risk emails before they’re sent.

MI Shield analyses every outgoing email before it leaves your sending infrastructure, catching content, link, authentication and sending-pattern risks that could trigger spam filters, throttling or reputation damage.

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100%

Pre-send Checks

<50ms

Per-email Analysis

100M+

Emails In Training Data

32%

Lower Blacklisting, Fleet-wide

We don't beat the spam filter. We are the filter.

No one filters outgoing email. That's why the ecosystem drowned in spam, and why the giants left. MI Shield screens every message before it leaves our network. Bad traffic never ships.

Every email is screened before SMTP handoff.

Nothing leaves your Cube without clearing MI Shield first, so the filtering happens on our side of the network, not the mailbox provider's.

How MI Shield Protects Your Reputation

Six layers of protection before every send.

Most email protection tools tell you something went wrong after the message has already been sent. MI Shield works earlier in the chain. It checks the message before it leaves your Cube, so risky sends can be stopped before they reach mailbox providers and damage your domain or dedicated IP reputation.

Pre-send Enforcement

Stops preventable damage before the email leaves

Traditional filters usually react after delivery problems appear. MI Shield sits before the send. It checks each message and blocks risky sends before they reach Gmail, Outlook or other mailbox providers.

100% Pre-send Checks

Blocked before sending

<50ms per-email Analysis

Continuously Trained AI

Learns from inbox vs spam outcomes

MI Shield is trained on 100M+ emails and real placement outcomes, so it can learn from the signals that matter: inbox placement, spam placement, bounces, deferrals and provider response patterns.

Learns from real sending outcomes

Adapts as mailbox filters change

Improves with every send

Network Effects

Every customer helps sharpen the protection layer

As more customers send through Mission Inbox, MI Shield sees more patterns across content, sending behaviour, authentication, routing and outcomes. That gives the model a wider view of what mailbox providers accept, flag or throttle.

Shared signal learning

Collective Protection

Auto-adapts

Keeps up without manual tuning

Spam filters change constantly. MI Shield monitors placement outcomes and provider signals, then updates its protection logic automatically. Your team does not need to rebuild rules every time Gmail or Outlook changes how they filter email.

Detects changing provider behaviour

Updates risk models automatically

No manual rule tuning required

Infrastructure Protection

Protects the assets your email depends on

Your domains and dedicated IPs are not disposable. MI Shield protects them at the infrastructure level by stopping risky sends before they create negative signals against your Cube.

Domains Protected

Dedicated IPs

Reputation Protected

Mailbox Provider Alignment

Built to Gmail and Microsoft's own standards

Rather than guessing at what mailbox providers want, MI Shield enforces Gmail and Microsoft sending standards by design, so every message that clears the check already meets the bar providers hold senders to.

Gmail Standards Enforced

Microsoft Standards Enforced

Included with every Cube.

No separate subscription. No extra setup. No bolt-on spam checker. MI Shield runs inside every Cube, protecting outbound campaigns, product email and API/SMTP workloads from the same infrastructure layer.

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MI Shield FAQs

Protect your sending reputation before the first email goes out.

MI Shield is included with every Cube, so every workload gets pre-send protection from day one.

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