Best SatPhone Email System ?

[svrevelations]

We have a Thrane & Thrane Sailor 150 FleetBroadband satellite phone onboard. We plan on using this to send a few daily emails, download GRIB files and send the odd SMS. Due to Iridium's high cost, I have been looking around for PC software allowing email compression to save download time thus saving costs. There a quite a few companies offering these services such as; XGate, Ocens, UUPlus SOHO, etc. However, all these companies charge a fee of about $30 per month for this service. These costs are in addition to Iridium's fees.

Are there any software available without paying monthly fee's?
What do you use when sending/receiving emails?

[hellosailor]

"Are there any software available without paying monthly fee's?"
Moose, compression has to take place before the email goes into the Iridium system for it to make any difference on your end. Which means you'll need a host service which compresses any email that hits their server, which means a monthly service fee.
I don't know anyone offering those services but I'm sure there are some out there. The problem still being--you've got to run it on your end as well, to send or decrypt the incoming. And pay for someone's server to encrypt your incoming.

If you--and your penpals--all make a point to use plain text instead of "webmail" and HTML, you will save some 80-90% on file size every time. That's an option in most email clients but it requires human intelligence to select it.