Warmup Inbox5.0 out of 5 stars |
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Related Products
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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.
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Warmup Inbox:
About
Warmup Inbox automatically raises your email sending reputation through our network of inboxes that talk to each other. The process of preparing an email address for general use or email outreach is commonly referred to as “Warming Up” an inbox, where you take a number of steps to ensure that an email address does not become deactivated, blacklisted, or automatically marked as spam when it begins to send outgoing messages to other recipients. This process is typically done with newly created email addresses but also benefits older email addresses who have been having issues with email deliverability, in that a noticeable portion of their outgoing mail is either landing in a spam folder or blocked entirely by an email server due to either being blacklisted or associated with a domain that has a poor reputation. Warming Up an email inbox essentially is recreating the way a typical person will use an email address.
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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
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Warmup Inbox:
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
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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.
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Warmup Inbox:
Audience
Businesses looking for an email deliverability solution
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Duobox:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Warmup Inbox:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Duobox:
API
Offers API
Supported
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Warmup Inbox:
API
Offers API
Supported
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Duobox:
Screenshots and VideosNo images available
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Warmup Inbox:
Screenshots and Videos |
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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
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Warmup Inbox:
Pricing
$19 per inbox per month
Free Version
Not Supported
Free Trial
Supported
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Duobox:
Reviews/
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Warmup Inbox:
Reviews/
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Warmup Inbox:
Pros & Cons from Real UsersPros
Cons
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Duobox:
Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Warmup Inbox:
Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Duobox:
Company InformationDuobox
Founded: 2026
Argentina
duobox.io/en
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Warmup Inbox:
Company InformationWarmup Inbox
www.warmupinbox.com
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Duobox:
AlternativesNo Alternatives
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Warmup Inbox:
Alternatives |
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Warmup Inbox:
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Warmup Inbox:
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Warmup Inbox:
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Duobox:
Categories |
Warmup Inbox:
Categories |
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Warmup Inbox:
Email Deliverability Features
Deliverability Alerts
Supported
Deliverability Reporting
Supported
DMARC Analytics
Supported
Email Address Verification
Not Supported
Email Content Testing
Supported
Email Previewing
Not Supported
Inbox Placement Testing
Supported
IP Blacklist Monitoring
Not Supported
Reputation Reporting
Not Supported
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Duobox:
Integrations
Amazon SES
Not Supported
ChatGPT
Supported
Claude Code
Supported
Cursor
Supported
Gmail
Not Supported
Google Workspace
Not Supported
Mailgun
Not Supported
Microsoft 365
Not Supported
Microsoft Outlook
Not Supported
Model Context Protocol (MCP)
Supported
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Warmup Inbox:
Integrations
Amazon SES
Supported
ChatGPT
Not Supported
Claude Code
Not Supported
Cursor
Not Supported
Gmail
Supported
Google Workspace
Supported
Mailgun
Supported
Microsoft 365
Supported
Microsoft Outlook
Supported
Model Context Protocol (MCP)
Not Supported
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Duobox:
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Warmup Inbox:
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