Dualog® Business Mail

Maritime email solution

A robust email service optimised for the maritime sector

Dualog® Business Mail is a reliable and user-friendly email service designed to handle all your business mail requirements. The mail service works regardless of carrier or communication system and is easily configurable to any number of email accounts. Users have access to their email history even when communication is down. 

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Unlimited email accounts

With Dualog® Business Mail it's simple to set up standardised email addresses for all employees. An unlimited number of email accounts per fleet ensures excellent scalability. Automatically updated distribution lists streamline company communication. 

Read more: Why email is still business critical in the shipping industry


Full control

Optimised for the maritime industry

Dualog® Business Mail allows companies to set individual size limits for each user and carrier, giving a prioritised and controlled email flow. The vessel side software is configurable from anywhere, and our web portal gives complete access to all communication sessions, data transfer statistics and history.

Management reports give an in-depth overview of the fleet status and help companies make qualified decisions based on real-time data. If communication is down, users can still read their email history. The service utilises automatic compression and decompression of all transferred data to reduce airtime costs. 


Read more: How Dualog® Business Mail secures your fleet email



Choose your email domain

The service makes it easy to set up email addresses with your specific domain. There is also the option to create your subdomains to allow for any corporate configuration or policy. 

The Dualog Mail service is flexible enough to accommodate whatever domain-name combination, including a global fleet domain (e.g. acmefleet.com), fleet sub-domains (e.g. fleet.acmetankers.com), ship specific domains (e.g. acmevoyager.com, acmetrader.com) or ship specific sub-domains (e.g. voyager.acmetankers.com, trader.acmetankers.com) and the seafarer's name or any other role-specific identifier as the user portion of the address.


Modern webmail

Accessible through webmail in your browser

Log into Dualog® Business Mail through your standard web browser and enjoy all the functionality you've come to expect from modern email clients. Receive emails or create new messages just like you are used to doing. 


Maritime-optimised, multi-layered email security gateway

Stop advanced email threats with MailDefence

A central part of the Dualog Cloud environment, Dualog® MailDefence™ is an enterprise-grade security solution that integrates with Dualog® Business Mail, Dualog® Crew Mail or other cloud-based mail solutions to protect your business & crew accounts from phishing, spoofing, malware, ransomware, zero-day viruses and other malware. The state-of-the-art cloud email security gateway is purposely built to mitigate any attack relayed by email. Each message sent to your ships goes through an extensive security check that includes scans by multiple antivirus engines, anti-spam scoring mechanisms, email fingerprint analysis, phishing checks and domain sanity checks.

Read more: Learn how Dualog MailDefence can improve email security


Optimised bandwidth

Reduce costs - ensure uptime

Automatic compression of all transferred data and sophisticated protocols and rule-sets optimises bandwidth usage across communication channels. From the administrative interface, it is easy to set and manage rules to block, restrict or allow email per network, computer, user group or individual user. You can also set size limits and priorities to make sure traffic is managed both according to operational and cost-benefit targets.


Main features


Mail server connects via all standard protocols including SMTP, POP3, IMAP4 and LDAP

SMTP Relay

To support external mail server on board

Automatic compression

Automatic compression of all transferred data

Optimised bandwidth

Sophisticated protocols and rule-sets optimises bandwidth usage across communication channels


Webmail interface with great functionality

Multiple users

Supports any number of users/e-mail accounts per ship

Maintains service

Maintains service to/from all on board e-mail user accounts via all communication carriers

On board mail storage

Each ship’s mail store is on board and therefore available irrespective of the external (communication equipment) connection status

10 GB free of charge shore message archive

Dualog managed and operated

Branded e-mail

Company’s choice of e-mail domain(s)


Antivirus and spam filtering of messages from shore to ship/ship to ship

Breakpoint restart

In case of circuit drop/switch during data transfer

Cost control

Filtering mechanism in both directions for effective cost control

Statistics overview

Ships’ connections and message transfer statistics available via Dualog® Cloud

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My life has become easier

Holger Börcher and Briese Schiffahrt based in Leer, Germany, chose Dualog® Business Mail for their fleet of 130 ships.

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