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EspoCRM VS InboxAgent

Compare EspoCRM VS InboxAgent and see what are their differences

EspoCRM

EspoCRM is open source CRM (Customer Relationship Management) software that allows you to see, enter and evaluate all your company relationships regardless of the type.

Rating
5.0 · 3 reviews
Pricing
Open source Free Free trial
Promote on VibeVoted
Alternatives Is it good?
InboxAgent

InboxAgent uses AI to read your shared mailboxes, like info@ and sales@, plus everyone's own inbox, on Microsoft 365, Gmail, Zoho Mail or IMAP. It finds the sales leads and gives each an owner on a board. Never sends from your mailbox.

Rating
5.0 · 1 review
Pricing
Paid Free trial $20 / Monthly
1 VibeVoted session
Alternatives Is it good?
PDFGate
Generate, process, and sign documents with a single API. sponsored

Which is more popular?

user rating
5.0 vs 5.0
CRM popularity
100% vs 0%
alternatives listed
240+ vs 30

Base details

Website, pricing, platforms and company facts side by side.

EspoCRM
InboxAgent
Website espocrm.com goinboxagent.com
Pricing
Open source Free Free trial
Paid Free trial $20 / Monthly Official pricing
Platforms
REST API PHP JavaScript NGINX +1
GMail M365 Zoho Hubspot +1
Company Startup from Ukraine · 2014 —
Listed in
CRM Open Source Sales Sales Workflow Marketing Customer Support Business Management +4
Email Productivity Team Inbox Lead Management Small Business CRM Productivity Sales Email Management Leads +5

About EspoCRM and InboxAgent

In their own words, as submitted to SaaSHub.

EspoCRM
InboxAgent

EspoCRM is a web-based application designed with the needs of startups, small and mid-size companies in mind. The software offers a wide range of features for automating every aspect of your business - from simple management of customer interactions and monitoring of the deal progress to advanced...

Read more about EspoCRM

Leads arrive at info@, at sales@, and in each salesperson's own inbox, mixed in with client questions, invoices and noise. On a busy day some are never answered, and you are the one answerable when a real lead goes quiet. InboxAgent watches the mailboxes you already have, on Microsoft 365,...

Read more about InboxAgent

Features and specs

What each product offers, as listed by its team.

EspoCRM 8 features
InboxAgent 11 features
  • Sales management
    Quotes, Sales Orders, Invoices
  • Marketing Automation
    Campaigns, Email Templates, Target Lists
  • Customer Support
    Customer Portals
  • Inventory Managment
    Products & Product Catalogs
  • Telephony
    Voip Integration, Voice Messages, Inbound & Outbound Calls
  • Team Collaboration
    Real-time Notifications, Stream, Shared Calendars
  • Reports & analytics
    Grid & List Reports, Revenue Forecasts
  • Data Synchronization
    Google Contacts & Calendar, Outlook Contacts & Calendar
  • Triage-based inbox system
    Every email is sorted into one of three things: a sales lead, something else that needs a person, or noise. Leads land on a Leads board and everything else on Follow-ups, each with an owner and a stage. Read-only throughout, nothing is moved.
  • AI Classification
    AI works out what each email is once the rules have cleared the obvious noise. Anything it is not confident about is marked Needs review and waits for a person. Your team's corrections stick and become rules and sender signals you can see.
  • Pricing Model
    $20 a month for your whole organization, including the first mailbox. $5 for each additional mailbox. Users are free, no per-seat charge and no overage. 7-day free trial.
  • Noise Filtering
    Newsletters, bulk mail, known marketing senders and auto-replies are caught by rules you control and set aside before the AI is ever called. Every decision is recorded so you can see what was filtered and why.
  • Gmail Integration
    Reads Gmail and Google Workspace mailboxes, shared and individual, read-only and Google-verified. Each person authorizes their own. Nothing is moved and your team keeps working in Gmail.
  • Outlook Integration
    Reads Microsoft 365 mailboxes, including shared mailboxes like info@ and sales@, read-only. Each person authorizes their own. Nothing is moved and your team keeps working in Outlook.
  • zoho crm
    Sales inquiries become leads in your Zoho CRM as they arrive, matched to an existing record where there is one rather than creating a duplicate. Zoho Desk is supported alongside it for service requests.
  • HubSpot Integration
    Sales inquiries flow into HubSpot as contacts and deals, matched against existing records. Works on HubSpot's free tier, so there is nothing extra to buy.
  • IMAP Support
    Connects to any standard IMAP mailbox, not just the major providers. Read-only, with the same Leads and Follow-ups boards as everywhere else. Four mailbox types in total: Microsoft 365, Gmail, Zoho Mail and IMAP.
  • Follow-up Automation
    Anything that needs a person and is not a sales lead is detected and placed on the Follow-ups board with an owner, and stays open until it is marked done. Invoices, renewals, contracts, supplier requests, legal notices. The automation is in the finding and the routing. InboxAgent never sends email on your behalf.
  • Read-Only Access
    Read-only access to every connected mailbox. InboxAgent does not move, migrate, archive or delete anything. Two-factor authentication, role-based per-mailbox access, CASA security assessment completed.

Analysis

An editorial look at what each product does well and who it suits.

EspoCRM
InboxAgent

Overall verdict

  • EspoCRM is a robust and versatile CRM solution that is well-suited for organizations looking for an open-source option with customizable features. It is generally positively reviewed for its ease of use and the value it provides at a competitive cost.

Why this product is good

  • EspoCRM is considered a good choice because it offers a user-friendly interface, a variety of features that cater to small and medium-sized businesses, and it is highly customizable. It allows businesses to manage their relationships and automate workflows effectively. Additionally, it is open-source, which provides flexibility in terms of development and integration with other tools and systems.

Recommended for

  • Small to medium-sized businesses
  • Organizations looking for an open-source CRM solution
  • Companies requiring a customizable CRM system
  • Businesses that need workflow automation and efficient relationship management
  • Teams looking for an easy-to-use interface with good community and support options

No analysis of InboxAgent yet.

Videos

Walkthroughs and reviews on video.

EspoCRM 3 videos + Add
InboxAgent 1 video + Add

Using EspoCRM

More videos

  • - EspoCRM - General Overview | CRM
  • - Workflow in EspoCRM | Powerful Automation in your Business

InboxAgent: never miss a lead in your business inbox

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
EspoCRM
InboxAgent
100% 100%
CRM
0% 0%
0% 0%
Productivity
100% 100%
100% 100%
Sales
0% 0%
92% 92%
Small Business CRM
8% 8%

Questions & Answers

As answered by people managing EspoCRM and InboxAgent.

What makes your product unique?

InboxAgent's answer:

It is read-only. InboxAgent reads the mailboxes you already have and never sends mail from them, never moves a message, and never files or deletes anything. Most tools in this category work by forwarding your mail into their own system, after which your own mailbox stops being the record of what arrived. Nothing here changes your mailbox.

For Microsoft 365, Gmail and Zoho Mail that is enforced by those providers rather than promised by us. The permissions we request are read-only, so you can check it on the consent screen before you click Allow.

Why should a person choose your product over its competitors?

InboxAgent's answer:

  • Nothing to migrate and no new app for your team to adopt. They keep working in Outlook or Gmail exactly as before.
  • Priced per organization, not per seat. $20 a month including your first mailbox, $5 for each additional mailbox, unlimited users.
  • It covers shared addresses like info@ and sales@ as well as everyone's own inbox, on Microsoft 365, Gmail, Zoho Mail or any IMAP mailbox.
  • A salesperson can act on a lead without being given the mailbox, which usually also holds bank correspondence and password resets.
  • It works with or without a CRM. If you use Zoho CRM, Zoho Desk or HubSpot, leads flow there as well.

How would you describe the primary audience of your product?

InboxAgent's answer:

Businesses whose sales inquiries arrive by email, at shared addresses like info@ and sales@ as well as in individual inboxes. Typically service businesses that sell by email: agencies, professional services, trades and field service, suppliers and distributors.

It fits particularly well where email is the main source of leads and there is no proper place to manage them. Every lead lands on a board with an owner and the original email attached, moves through stages you name yourself, carries up to ten fields of your own, and can be exported to CSV at any time.

What's the story behind your product?

InboxAgent's answer:

Sales inquiries arrive in the same mailbox as invoices, supplier mail and noise. Everyone can see them and nobody owns them, so on a busy day some are never answered, and the business often finds out only when a customer goes elsewhere.

InboxAgent exists to answer one question about that mailbox: who owns this email, and has anyone actually dealt with it.

Which are the primary technologies used for building your product?

InboxAgent's answer:

.NET on Microsoft Azure App Service. Microsoft Graph, the Gmail API, the Zoho Mail API and IMAP for mailbox access, all with read-only permissions. OpenAI for classification.

User comments

Share your experience with using EspoCRM and InboxAgent. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

EspoCRM 5.0 · 3 reviews
InboxAgent 5.0 · 1 review
  • Intuitive CRM for small teams
    SaaSHub review
    · Nov 2026

    We needed a system for our sales team of 5 managers, where they could log quotes, sales order deliveries, and customs paperwork. EspoCRM offers good tools for managing your sales process, we use Sales Pack to track...

  • Open-source solution that truly meets your needs
    SaaSHub review
    · Aug 2025

    We’ve been using EspoCRM for over a year already and so far it has met all of our needs. The ability to shape the system around our work processes has been the biggest advantage for us. We’ve customized fields,...

  • A convenient CRM platform for lead management and marketing
    SaaSHub review
    · Mar 2025

    We use EspoCRM to solve many tasks. In particular, the marketing department actively uses this platform for lead storage, contact management and email automation.

  • Sales leads sorted
    SaaSHub review
    · Sep 2026

    My emails are organized now. I dont have to scroll through emails. nice delegate agent I would say.

Alternatives to EspoCRM and InboxAgent

When comparing EspoCRM and InboxAgent, you can also consider the following products.

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