TankerMails is an offline-first mail system built for vessels. Crew read and write as normal; the ship syncs whatever it can, whenever the satellite window allows, and picks up exactly where it left off.
Engineered resilience
Everything you expect from business mail, built to run over a link that is slow, expensive and frequently absent.
Large attachments transfer in chunks and resume after a dropout, so an interrupted window costs minutes rather than the whole message.
Browser webmail, the TankerMails desktop app, or Microsoft Outlook — all reading the same mailbox over the same connection.
Operators who need it get a dedicated database and mail store, kept separate from every other client on the platform.
A familiar inbox that behaves the same alongside the pier or mid-ocean. Crew change is frequent enough without adding training to it.
One console for vessels, mailboxes, delivery status and storage use, with per-message tracing when something does not arrive.
SPF, DKIM and DMARC on every outbound message, TLS in transit, role-separated administration and a full audit trail.
The workflow
How TankerMails bridges the gap between a disconnected vessel and the shore network.
Crew read and compose in webmail, the desktop app or Outlook. Nothing waits on the link — drafts and replies are held on board.
When a window opens, only what changed is exchanged — compressed, chunked, and resumable if the link drops part way through.
The shore server signs each message and hands it to the internet, then holds anything inbound ready for the next window.
Simple fleet pricing
Billed per vessel, per month, prorated by the days a vessel is actually in service. Every plan carries the same features — the rate steps down as the fleet grows.
For single vessels and smaller fleets getting connected.
The same platform at a lower per-vessel rate once your fleet passes ten.
For multinational cargo and tanker operators with their own requirements.
* Backup control is a paid option on every plan. Talk to us for pricing against your retention requirements.
Tell us how many vessels you operate and what they are running today. We will come back with a straight answer about whether this fits.
contact@tankermails.com →