Fastmail

Fastmail

4.0 out of 5 stars
Duobox Fastmail

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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.
Fastmail:

About

Email you can feel good about. features you’ll love. You get 100% of our efforts and expert support when you need it. Email holds the details of your life. Here, your story is protected, not monetized. Thoughtful and speedy email, calendars, and contacts; all ad-free. Built with you in mind, you’ll love our intelligent features. Internet companies use your data as a way to get rich. But it doesn’t have to be this way. Take back your privacy and get a better email experience. With your email on your side, you spend more time doing what you love. Use Fastmail in your web browser, on mobile devices, and on desktop apps (Outlook, Thunderbird, Mac Mail). Breeze through your day with email, calendars, and contacts all in one app. Seamlessly import your data. Keep your life organized with a full-featured inbox. Bring all your calendars together. Share with your favorite people. Use your custom domain, and own your email address forever.
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
Fastmail:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android 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.
Fastmail:

Audience

Anyone that wants an ad-free and secure email service provider
Duobox:

Support

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

Support

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

API

Offers API Supported
Fastmail:

API

Offers API Not Supported
Duobox:

Screenshots and Videos

No images available
Fastmail:

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
Fastmail:

Pricing

$3 per user 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
Fastmail:

Reviews/Ratings

Overall 4.0 / 5
ease 5.0 / 5
features 4.0 / 5
design 5.0 / 5
support 5.0 / 5
Fastmail:

Pros & Cons from Real Users

Pros

  • Easy to use. Email Masking. Integration with other email providers. 30GB of storage. can use your own domain.

Cons

  • Doesn't have proper email encryption. Doesn't allow you to encrypt emails with passwords.
Duobox:

Training

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

Training

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

Company Information

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

Company Information

Fastmail
Founded: 1999
Australia
www.fastmail.com
Duobox:

Alternatives

No Alternatives
Fastmail:

Alternatives

Proton Mail

Proton Mail

Proton AG
4.6 out of 5 stars
Fastmail:
Greatmail

Greatmail

5.0 out of 5 stars
Fastmail:
Fastmail:
Thunderbird

Thunderbird

Mozilla Foundation
4.2 out of 5 stars
Duobox:
Fastmail:
Duobox:

Categories

Email Hosting Supported
Fastmail:

Categories

Email Clients Supported
Email Hosting Supported
Email Management Supported
Duobox:

Integrations

1Password Not Supported
All-in-One Messenger Not Supported
ChatGPT Supported
Claude Code Supported
ClearMyInbox Not Supported
Cursor Supported
Fluxmail Not Supported
Franz Not Supported
GroupNews Not Supported
Keeper.sh Not Supported
MailRoute Not Supported
Mailspring Not Supported
Model Context Protocol (MCP) Supported
Postbox Not Supported
Pronnel Not Supported
Remindlo Not Supported
SavvyCal Not Supported
Shopify Not Supported
SimplyMeet.me Not Supported
Thunderbird Not Supported
Fastmail:

Integrations

1Password Supported
All-in-One Messenger Supported
ChatGPT Not Supported
Claude Code Not Supported
ClearMyInbox Supported
Cursor Not Supported
Fluxmail Supported
Franz Supported
GroupNews Supported
Keeper.sh Supported
MailRoute Supported
Mailspring Supported
Model Context Protocol (MCP) Not Supported
Postbox Supported
Pronnel Supported
Remindlo Supported
SavvyCal Supported
Shopify Supported
SimplyMeet.me Supported
Thunderbird Supported
Duobox:
Claim Duobox and update features and information
Claim Duobox and update features and information
Fastmail:
Claim Fastmail and update features and information
Claim Fastmail and update features and information