Duobox SharedInbox

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Duobox:

About

Duobox is hosted business email for small teams that want to use addresses on their own domain. It provides personal and shared inboxes such as sales@, support@ and billing@, with shared message history and access for multiple team members. Users can connect a domain they already own or register one through Duobox, then create inboxes, aliases and forwarding rules. The service includes up to 10 inboxes of 50 GB each per person and supports additional domains. Teams can access mail in a web browser or configure a phone's mail app. Duobox also offers an MCP connection for clients such as ChatGPT, Claude and Cursor, using OAuth and configurable permissions to read mail, save drafts, send messages, or manage the team, plan and inboxes. A free tier includes one person, one inbox, one domain and 10 GB; additional people cost $2 per month each.
SharedInbox:

About

Manage customer support and communication directly from Slack. Collaborate effectively on shared emails like support@your.domain without sharing passwords among team members. SharedInbox connects to any email you currently use. You can also get an @in.sharedinbox.co email you can setup forwarding to. Just hit the command SharedInbox /compose and send emails to anyone. On any email thread, Just hit Reply Mail. Each incoming or outgoing email creates a new Slack Message Thread, easily tag teammates and discuss. Every account comes with a support site your users can send and manage their support requests from. No new installation or application required. Use a tool your team is already familiar with Slack. Know when your email is delivered and when it is opened. See files and pictures attached to your emails directly in Slack. Create a custom signature to attach to your emails. Set a custom message that is automatically sent once you get an email.
Duobox:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
SharedInbox:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
Duobox:

Audience

Small companies and teams that want email on their own domain, with shared inboxes like sales@ and support@, and teams that want their AI agent to work in that inbox.
SharedInbox:

Audience

Companies requiring a solution to manage customer support and communication directly from Slack
Duobox:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
SharedInbox:

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported
Duobox:

API

Offers API Supported
SharedInbox:

API

Offers API Not Supported
Duobox:

Screenshots and Videos

No images available
SharedInbox:

Screenshots and Videos

Duobox:

Pricing

$2/person/month
Free for one person, one inbox, one domain and 10 GB, with no card required. Paid access is $2 per added person per month in US dollars, with no contract; each person can have up to 10 inboxes of 50 GB each. The first domain is included; each additional domain costs $5 per month for hosting, and domain registration is charged separately by the registrar.
Free Version Supported
Free Trial Not Supported
SharedInbox:

Pricing

$5 per month
Free Version Not Supported
Free Trial Supported
Duobox:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
SharedInbox:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
Duobox:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
SharedInbox:

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
Duobox:

Company Information

Duobox
Founded: 2026
Argentina
duobox.io/en
SharedInbox:

Company Information

SharedInbox
Founded: 2018
India
sharedinbox.co
Duobox:

Alternatives

No Alternatives
SharedInbox:

Alternatives

SharedBox

SharedBox

Everygood
5.0 out of 5 stars
SharedInbox:
SharedInbox:
Spark Mail

Spark Mail

Readdle
1.5 out of 5 stars
SharedInbox:
MyColdInbox

MyColdInbox

Clustox LLC
Duobox:
SharedInbox:
Duobox:

Categories

Email Hosting Supported
SharedInbox:

Categories

Help Desk Supported
Duobox:

Integrations

ChatGPT Supported
Claude Code Supported
Cursor Supported
Gmail Not Supported
Google Cloud Platform Not Supported
Microsoft Outlook Not Supported
Model Context Protocol (MCP) Supported
Slack Not Supported
Yahoo! Mail Not Supported
SharedInbox:

Integrations

ChatGPT Not Supported
Claude Code Not Supported
Cursor Not Supported
Gmail Supported
Google Cloud Platform Supported
Microsoft Outlook Supported
Model Context Protocol (MCP) Not Supported
Slack Supported
Yahoo! Mail Supported
Duobox:
Claim Duobox and update features and information
Claim Duobox and update features and information
SharedInbox:
Claim SharedInbox and update features and information
Claim SharedInbox and update features and information