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OCENSMail logo

Simple, Powerful, Reliable, Modern

Complete email solution for satellite and other low bandwidth connections.


  • Designed for satellite communications Including devices from: Iridium, Inmarsat, Globalstar, Thuraya, KVH, Intellion, VSAT
  • Works great over cellular or limited internet connections or standard network connections
  • Huge savings on airtime expenses due to advanced data compression and network optimization
  • Easy setup
  • Works with many clients: Thunderbird (included), Outlook, MacMail, others...
  • No limits on content or file size
    • Full support for attachments and HTML coding
    • Includes management tools to control incoming mail sizes
  • Web Mail Access - OCENSMail also gives you the ability to access your account from a local cafe via the web.
      This also gives you the power to tap into some advanced settings like:
    • Full user controlled Spam Filtering
    • User controlled White and Black listing options
  • Full technical support
  • Free Weather data and GRIB reader included
  • Includes free OneMessage SMS messaging service
  • Accessing your existing email account - While OCENSMail provides you with an [email protected] email address you can still gain access to emails from your existing account in one of two ways:
    • Use OCENS OneMail app on your smart phone to access your email directly
    • Setup auto forwarding of your existing email to your address



OCENS OneMail logo
OneMail in one world, connect with the other

OCENS OneMail email solution allows you to access YOUR Gmail, Yahoo, HotMail, Exchange*, and other email accounts via satellite phone or low bandwidth connections.


  • For iOS and Android
  • Designed for satellite communications Such as: Iridium GO, Globalstar SatFi, Thuraya IP, and others. (may require Sidekick device)
  • Works great over cellular or limited internet connections or standard network connections
  • Easy setup
  • Supports most email services: Gmail Exchange* Yahoo AOL iCloud, etc.
    *May not be compatible with 2FA accounts.
  • Emails are left on server for access later via your standard methods
  • Download only the messages that are important to you
  • Photo compression service: Powerful image optimization built in
OneMail via Iridium GO!
OneMail connecting directly to Wi-Fi enabled satellite device
OneMail via Sidekick and handheld satellite phone
OneMail connection to satellite phone via Sidekick Wi-Fi device

Use Sidekick with your phone...(click here) OCENS Sidekick Wi-Fi Router

What users are saying...


  • Check out this review of OneMail and the the Iridium GO! by Nature Tech Family
  • "Just a short note to tell you how impressed we are with OCENS mail and the support we have had from your company. We do appreciate great support people and a company that can respond quickly to customer problems. Again thanks for the great service."
    - Bruce & Carla Porter, Carlacat
  • "Just wanted to drop a note to you that the e-mail system is really really working great. The speed is nothing short of fantastic. Using Verizon cell, or Verizon wireless card, or Globalstar, or my "home wireless system" .... All work with such speed it is amazing. You should be selling this system to every boat that floats around the world !!!!!!
  • Just moved "True Grit" from Miami to Ocean City, NJ last week. I have been using the Verizon Broad Band wireless card for 2 months. Sitting in the marina at Coconut Grove, FL the speed of the Broad Band was almost like a cable modem. FAST! On the move to NJ most major areas had the coverage. If no Broad Band coverage card switched to the slower 14.4 Kb that had better coverage. Using the "data" connection (9,600 baud) of the Globalstar phone (where I have no Verizon connection) and using the "OCENS" e-mail compression software, I can down load 15-20 e-mails in less then a min. You prepare you e-mails "before sending" then send all at once. Same with reading e-mails, you down load them at one time, then read them off line."
    - Bob Wilkins, Ocean City, NJ

Not all compression is the same!

With the OneMail app - sending photos is more cost effective and reliable than ever.

We all take photos with our phones. When we travel taking these photos and showing them to others can be the most powerful way to communicate what we are experiencing. Sending photos allows us to instantly describe in detail what we are seeing or experiencing. Photos can also be a key tool for getting help and picture quality can be very important when taking a picture of a broken part that we need to get replaced.

Detail is key - but so is the cost to transmit that image via the satellite network. As the costs vary widely from satellite service to satellite service, one thing is constant - it cost a lot more to send data over satellite than over cellular. How can OCENS help with this?OneMail allows you send very high quality photos directly from your iOS or Android device over satellite connections, like the Iridium GO!, without the need to manipulate the image in any way to reduce the file size. Our app takes care of that for you - automatically. Look at the following examples to see for yourself how well this is done.

Photo thumbnails are all sized to the same dimension for comparison - you can click on the photo to download the full image for close examination.

Image taken with iPhone and sent via Apple Mail in full size: Same image sent via OCENS OneMail:
Photo uncompressed via iOS Photo compressed and sent via OCENS OneMail email service
2.1MB 38KB
3648 × 2736 pixels 853 × 640 pixels
300 pixels/inch 72 pixels/inch
Transfer time via Iridium GO:
about 145 minutes
Transfer time via Iridium GO:
about 3 minutes

Photo uncompressed via iOS Photo compressed and sent via OCENS OneMail email service
2.2MB 60KB
3648 × 2736 pixels 853 × 640 pixels
300 pixels/inch 72 pixels/inch
Transfer time via Iridium GO:
about 150 minutes

Transfer time via Iridium GO:
about 4 minutes

Send Pictures, not Postage Stamps!