Mission Inbox

Contents

1. 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
2. 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
3. 03What it doesIts main features, where it runs, what it works with and who makes it
4. 04Where it standsIts grades against its category, and whether to keep it or make your own
5. 05The alternativesThe tools it is most often weighed against, side by side
6. 06Quick answersThe questions people ask about it, each answered in a line or two
7. 07About ToolGPAWho made this guide, what else is on the site, and how to cite it

ToolGPA put this guide together from Mission Inbox’s own pages, its app-store listings and our grades. Every fact in it is on Mission Inbox’s page too, where it is kept up to date. Checked Nov 13, 2026.

1. 1

   Best for dedicated mailboxes and IPs for cold email

   Mission Inbox provides dedicated mailboxes and IP addresses for cold email, with a pre-send scan.

2. 2

   Paid plans start at $50 a month

   As its pricing page puts it: $50 per month for 15 mailboxes and 5,000 sends.

3. 3

   It runs on Web

   Web.

4. 4

   Dedicated IP addresses

   Each mailbox sends from IP addresses reserved for the account instead of a shared pool, so other senders' habits do not affect its reputation.

5. 5

   MI Shield pre-send scan

   The vendor's own AI checks content, headers and DNS before each outbound send to catch problems before a campaign goes live.

6. 6

   Automatic DNS and mailbox setup

   Mailboxes are created in one step and DNS records are configured automatically, so they can be connected to a sequencer afterwards.

7. 7

   A 1.6 GPA, above 5 of 81

   That is against the other cold outreach tools we grade, on value, the free plan, features, ease of use and platforms.

8. 8

   Keep it

   To replace Mission Inbox you would be making a network of real inboxes that open and answer your emails. That is not a weekend's work, with an AI app builder or without one.

• Lite

  $50

  per month for 15 mailboxes and 5,000 sends

  Dedicated IP addresses, MI Shield protection, analytics and sending logs. A fixed plan: it pauses at the send limit until you move to Scale.

• Scale

  $199

  per month for 30 mailboxes and 10,000 sends

  Aimed at agencies and companies sending for clients. Dedicated IPs, MI Shield, analytics and logs; more mailboxes and sends can be added.

Read from missioninbox.com on Nov 13, 2026.

Dedicated IP addresses

Each mailbox sends from IP addresses reserved for the account instead of a shared pool, so other senders' habits do not affect its reputation.

MI Shield pre-send scan

The vendor's own AI checks content, headers and DNS before each outbound send to catch problems before a campaign goes live.

Automatic DNS and mailbox setup

Mailboxes are created in one step and DNS records are configured automatically, so they can be connected to a sequencer afterwards.

Cubes for separating clients

Cubes split clients, brands and campaign workloads into separate sending environments, which matters for agencies.

Premium warmup add-on

Mailbox warmup is a paid add-on, billed in credits per mailbox. You can instead warm up with your own tool or skip warmup.

API and SMTP access

An API and SMTP sending give campaign or product email traffic its own sending reputation, with documentation linked from the site.

Mission Inbox is made by Mission Inbox Inc.

Mission Inbox's GPA of 1.6 is higher than 5 of the 81 other cold outreach tools we grade, and level with 12.

It stands best on platforms and integrations (B, above 17 of 81) and worst on free plan and trial (F, above 0).

Its paid plans start at $50 a month, against a middle price of $39 for the category: 47 of the 73 others that charge start lower.

On features, ease of use and platforms it scores 2.0 out of 4. 30 tools score higher and cost less.

Part 05 · Alternatives

The alternatives

The tools it is most often weighed against, side by side

Mailforge, Maildoso, Mailreef, Hypertide and Infraforge

The 5 tools Mission Inbox is most often weighed against, with where each one differs from it.

• 

  1.6GPA

  Mailforge

  From $3/mo

  Shared-IP domains and mailboxes built for cold email sending.

  • Mailforge also covers dMARC.

  Mission Inbox and Mailforge compared in full
• 

  1.4GPA

  Maildoso

  From $75/mo

  Cold email mailboxes and domains sold by the mailbox.

  • Mission Inbox also covers inbox warm-up.
  • Maildoso also covers dMARC.

  Mission Inbox and Maildoso compared in full
• 

  1.4GPA

  Mailreef

  From $240/mo

  Dedicated mail servers and mailboxes for cold email.

  • Mailreef also covers dMARC.

  Mission Inbox and Mailreef compared in full
• 

  1.6GPA

  Hypertide

  From $3.30/mo

  Automated Google and Microsoft inboxes for cold email senders.

  • Mission Inbox also covers inbox warm-up.
  • Hypertide also covers dMARC.

  Mission Inbox and Hypertide compared in full
• 

  1.6GPA

  Infraforge

  From $4/mo

  Private cold email infrastructure on dedicated IPs.

  • Infraforge also covers dMARC.

  Mission Inbox and Infraforge compared in full

The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.

ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.

Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.

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