Master Inbox vs Front: Which Is Right for Outbound? (2026)
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Start your free 7-day POC and see your own outbound replies in one labeled inbox.
Why trust this comparison?
This comparison is written by the Master Inbox team and reviewed by our founder, Abdul Mukati. It was first published on 27 February 2026 and rewritten on 28 October 2026. Every Front fact comes from Front's own pages, read on that date, and the sources are listed at the bottom. Master Inbox is one of the two products compared, so we only state what is published, we show the arithmetic and we mark vendor claims as the vendor's. Front is a strong product for the support work it was built for, and we say so where it matters.
What Front is
Front describes itself as an AI customer operations platform. It combines shared inboxes, ticketing, a knowledge base and AI agents across email, chat, SMS and WhatsApp. Its core is collaboration: @mentions, escalations and handoffs, with the full history of a customer in one place.
Front lists customer support, operations, inbound sales, account management and customer success teams as its audience. Its AI line includes Copilot for agents, Autopilot for AI agents, Smart QA and Smart CSAT. Its homepage states 160-plus out-of-the-box integrations, and the vendor lists SOC 2 Type II, ISO 27001, GDPR, CCPA and HIPAA. Pricing is per seat. Details are in our Front pricing guide.
What Master Inbox is
Master Inbox is the reply management platform for outbound teams and agencies. It gives every email and LinkedIn reply from every sequencer, LinkedIn tool and inbound form one AI-labeled inbox. Reply Agents answer, follow up and book meetings on a real calendar, with a human in the loop first and autonomous when you are ready.
It works alongside the sequencer, CRM and support desk a team already uses. Keep Smartlead or Instantly for sending, and let Master Inbox handle what comes back. Plans are priced on connected mailboxes and client workspaces, with unlimited users on every plan, and every plan starts with a free 7-day POC. The product tour shows the inbox in action.
Front vs Master Inbox side by side
1. Reply capture
Front connects mailboxes and channels to shared inboxes and keeps every conversation with a customer in one history. It also offers Sequences on Professional and above: mail merge plus a scheduled series, where each sequence reaches up to 200 recipients and a sender channel is chosen per sequence. Master Inbox reads the mailboxes themselves, so it also threads forwards, CC replies and new-address replies that a sequencer's own inbox does not show. Master Inbox internal data: roughly 12% more replies captured than a sequencer reports. Replies from LinkedIn tools sit in the same thread as email for each prospect.
Fit: Master Inbox is built to catch every reply from every outbound mailbox and LinkedIn account.
2. Labeling and AI
Front's AI is aimed at support work: Copilot assists agents, Autopilot resolves conversations, and Smart QA and Smart CSAT score quality and satisfaction. Copilot is $20 per seat per month on Starter and Professional and included in Enterprise. Autopilot starts from $0.05 per conversation. Master Inbox applies AI labeling to every email and LinkedIn reply by intent as it lands, with thirteen default labels or your own taxonomy, running on your own OpenAI, Anthropic or OpenRouter key. Reply Agents then answer every outbound reply, follow up and book meetings.
Fit: Master Inbox is built to turn a pile of replies into labeled, routed, answered conversations.
3. Integrations
Front states 160-plus out-of-the-box integrations, an API and a no-code integration builder. Its CRM connections include Salesforce, HubSpot and Microsoft Dynamics 365, and its Slack integration lets teams manage Slack channels inside Front. Its integrations directory did not list a LinkedIn integration when checked on 28 October 2026. Master Inbox connects the outbound stack: Smartlead, Instantly, EmailBison, Reply.io, Lemlist, HeyReach, Expandi and Aimfox, plus HubSpot, Pipedrive, Attio, GoHighLevel, Salesforce, Slack, Cal.com, Calendly, Clay, Zapier and n8n. A REST API with 150-plus endpoints and webhooks for every event is included on every plan.
Fit: Master Inbox is built to sit between your sequencers, LinkedIn tools and CRM.
4. Time to set up
Front offers a 14-day free trial of Professional features with no credit card. Setup centers on connecting channels, then building the automation rules and macros your support process needs, with limits by plan: up to 10 rules on Starter and up to 20 on Professional. Master Inbox starts with a free 7-day POC and onboarding is done with you. You connect your sequencers and mailboxes, the thirteen default labels are ready on day one, and a client workspace can be cloned in one click.
Fit: Master Inbox is built to go live on your outbound replies with a team setting it up beside you.
5. Interface and team work
Front's inbox has Open, Later and Done states, @mentions, escalations and handoffs, and its July 2026 digest adds a redesigned mobile app and a Mentions view. That is a strong model for a team answering customers together. Master Inbox gives every rep one queue with a thread per prospect across email and LinkedIn, label-triggered workflows such as Slack cards with an approve button, and client workspaces with logins scoped to a client's own inbox. Reporting tracks SLA on every reply, reply coverage and missed replies.
Fit: Master Inbox is built for outbound reps, account executives and client managers working the same reply queue.
6. Pricing
Front is priced per seat. On front.com/pricing on 28 October 2026: Starter $25, Professional $65 and Enterprise $105 per seat per month, billed annually. Ten seats on Professional is $650 a month, 25 seats is $1,625 and 50 seats is $3,250. Add-ons such as Copilot are extra, so the bill follows headcount. Master Inbox is priced on connected mailboxes and client workspaces: Reply Agent from $599, Agency $599 for up to 3,000 mailboxes and 15 client workspaces, and Team $799 for up to 2,000 mailboxes. Adding a rep does not change the bill.
Fit: Master Inbox is built for teams whose volume comes from mailboxes and clients, not headcount.
7. Support and security
Front's vendor-listed posture includes SOC 2 Type II, ISO 27001, GDPR, CCPA and HIPAA, and Professional adds SSO and SCIM. Master Inbox is EU-hosted in Finland and Germany, GDPR-ready with data processing agreements on file, and onboarding is white-glove: our team sets it up with you. The Unlimited plan includes priority support. Agencies that give clients a login get a workspace scoped to that client's inbox only, which keeps each client's replies separate.
Fit: Master Inbox is built for EU-hosted outbound teams who want hands-on onboarding.
Comparison table
| Criterion | Front | Master Inbox |
|---|---|---|
| Built for | Support, operations and customer success teams | Outbound teams and lead generation agencies |
| Pricing model | Per seat: $25, $65, $105 per month, billed annually (28 October 2026) | Mailboxes and client workspaces, from $599 a month, unlimited users |
| Reply capture | Shared inboxes and channels with full customer history | Reads the mailboxes, threads forwards, CC replies and new-address replies |
| AI | Copilot, Autopilot, Smart QA, Smart CSAT | Intent labels on every reply, Reply Agents |
| Integrations | 160-plus vendor-stated, API, Salesforce, HubSpot, Slack | Sequencers, LinkedIn tools, CRMs, Slack, booking tools, REST API |
| Trial | 14-day free trial of Professional features | Free 7-day POC with onboarding done with you |
| Security | SOC 2 Type II, ISO 27001, GDPR, CCPA, HIPAA (vendor-listed) | EU-hosted, GDPR-ready, DPAs on file |
Want to see your own replies in the Unibox? Start your free 7-day POC.
Who Front suits
Front suits support, operations and customer success teams that share one company inbox and need ticketing, macros, a knowledge base and AI agents across email, chat, SMS and WhatsApp. If each person on your team works customer conversations all day and headcount is stable, a per-seat model matches the work. Front's integrations, security posture and AI tools are built for that job. For a wider view, see seven Front alternatives compared, or Missive pricing if you are weighing another shared inbox.
Who Master Inbox suits
Master Inbox suits outbound sales teams and lead generation agencies that send from many mailboxes and LinkedIn accounts and need every reply in one queue. It labels intent with AI, routes hot replies to Slack, syncs to HubSpot and other CRMs, and gives each client a workspace. It is a unified inbox for the replies cold outbound produces. See the Front vs Master Inbox summary page for a quick view.
How teams use both
The two products connect to different parts of the stack, so they sit side by side without overlap. A common setup looks like this:
- Sequences go out from Smartlead, Instantly or EmailBison. Keep them for sending.
- Every reply lands in Master Inbox, labeled by intent. Hot replies go to Slack and sync to the CRM.
- A reply agent or a rep books the meeting on the real calendar.
- Once the prospect becomes a customer, their support conversations live in Front, with tickets, macros and the knowledge base.
Outbound replies and customer support are different queues with different owners. Master Inbox covers the first, Front covers the second.
Frequently asked questions
Is Master Inbox a Front alternative?
For working the replies cold outbound produces, yes. Master Inbox is built for that job, while Front is built for support desks. The Front alternative page covers the fit in detail.
Can I use Master Inbox and Front together?
Yes. Many teams keep Front for customer support and use Master Inbox for outbound replies from Smartlead, Instantly, EmailBison and LinkedIn tools. The two do not overlap.
How much does Front cost compared with Master Inbox?
As of 28 October 2026, Front lists $25, $65 and $105 per seat per month, billed annually. Master Inbox plans start at $599 a month, based on mailboxes and client workspaces, with unlimited users.
Is Master Inbox priced per seat?
No. Master Inbox is priced on connected mailboxes and client workspaces, and every plan includes unlimited users. Adding a teammate does not change the bill.
Does Front connect to LinkedIn?
Front's integrations directory did not list a LinkedIn integration when checked on 28 October 2026. Master Inbox connects HeyReach, Expandi and Aimfox and shows those conversations next to email in one thread per prospect.
Does Master Inbox have a free trial?
Every plan starts with a free 7-day POC, and onboarding is done with you. Front lists a 14-day free trial of Professional features.
Which is better for a lead generation agency?
Master Inbox is built for agencies: one workspace per client with its own mailboxes, labels and members, and client logins scoped to their own inbox. The Agency plan is $599 a month for up to 3,000 mailboxes and 15 client workspaces.
Sources
Facts about Front checked on 28 October 2026 from Front's own pages:
Master Inbox pricing comes from our pricing page. Start your free 7-day POC on the pricing page today. Front is a trademark of its owner. Master Inbox is an independent product and is not affiliated with Front.