Email infrastructure for agencies

Run client outreach without sharing sender reputation

Give every client separate domains, mailboxes and sending infrastructure while managing everything through Mission Inbox.

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Built for outbound agencies

Give every client their own sending environment

Scale your client roster without mixing domains, IPs or sender reputation across accounts.

Onboard new clients without infrastructure chaos

Set up client domains, mailboxes and sending routes in one place, then connect them to the sequencer your agency already uses.

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Keep every client completely isolated

Use separate Cubes for each client so poor performance from one account does not damage every campaign your agency manages.

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Catch risky sends before they cause damage

MI Shield checks content, authentication and sending behaviour before emails leave, helping protect each client’s domains, IPs and reputation.

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Explore Features

Everything your agency needs to manage client sending

Separate infrastructure for every account, managed from one platform.

Isolated client Cubes

Separate each client’s domains, mailboxes and sending routes to contain reputation risk.

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Reliable SMTP mailboxes

Connect client mailboxes to Smartlead, Instantly, Apollo, EmailBison and other outbound tools.

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Dedicated IPs

Give clients controlled sending infrastructure without relying on unknown senders in a shared IP pool.

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Central delivery monitoring

Monitor sending activity and infrastructure health across every client account from one place.

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Platform View

A look inside Mission Inbox

Email dashboard showing send requests, credits used, domains, mailboxes, and email activity graph.

Mission Inbox dashboard showing outgoing messages with subjects, dates, sizes, and statuses like Sent, Pending, SoftFail.

Mission Inbox dashboard showing 5 total and active projects with project names, domains, mailboxes, and creation dates.

Dashboard of Mission Inbox showing 716 mailboxes, all associated with Anthony Baltodano and currently disabled.

A look inside Mission Inbox

Mission Inbox interface showing API Sending panel with email sending form, curl command, and API key details.

Mission Inbox API Sending page showing Inbound Webhook setup, prerequisites, and API key management.

Mission Inbox interface showing sent outgoing messages with subjects, dates, sizes, and statuses in dark mode.

Mission Inbox Platform API settings showing live API key and analytics cube configuration details.

Email infrastructure for agencies: frequently asked questions

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Testimonials

We always deliver

Teams that rely on email, run on Mission Inbox. See what changed after they moved away from shared sending infrastructure.

"Mission Inbox deliverability is now neck & neck with G-suite and microsoft infra, and in our case, 2x better."

Ali Syed

Founder

"Deliverability used to be my #1 problem. Now, it's like 2009-2012 again; just bogged down with unlimited leads and meetings
"

Dmitriy Katsel

Owner

"85% open rates across our client campaigns"

Hussain Hazari

Founder

"Always-there support and above-and-beyond deliverability"

Usama Saif

Head of Growth

"Best-in-class support with seamless onboarding"

Alp A.

"Feels like part of our internal team"

Jayson D

Founder & CEO

"Makes complex deliverability easy to understand"

Alp Aysan

"A platform we’re glad finally exists"

Freek de Bresser

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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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