Compressing your email, saving $:
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you depend upon remote satellite or HF radio services for your
email, you may have heard of "compression" and
asked: how does it work, and how does it help?
increasing number of HumaniNet field partners are using the UUPlus
email service for controlling costs and improving reliability. Their
service achieves up to 75% compression of text and most attached
files, thus reducing the cost of email over satellite significantly.
As a rule of thumb, if your monthly airtime costs for data are over $50, you should consider UUPlus or a comparable service. For example, if you pay $1.50/minute for airtime (data) and your statement shows 40 minutes, that is $60 of usage. With UUPlus service compressing by 75%, your airtime would be around 10 minutes, resulting in usage costs of $15 for airtime and $35 for the UUPlus service = $50, or a savings of $10.
We have asked Jeremy Bonnett, business manager at UUPlus, to
explain their service, which is especially popular with remote
users who send and receive email over Iridium, Thuraya, and RBGAN. For
more information, contact Jeremy at firstname.lastname@example.org and
mention this article.
UUPlus Email software provides a full featured
email distribution solution for exchanging Internet mail and
data files over virtually any available data capable connection.
Though UUPlus is highly configurable and versatile enough to
meet the demands of data communications in infrastructure challenged
areas, the software presents both administrators and users with
friendly, easy to use configuration and operational interfaces.
As well as being able to function as a stand-alone system, UUPlus
is designed to seamlessly plug into any existing email network
to provide secure email access beyond the reach of traditional
UUPlus supports all major satellite networks including: Inmarsat RBGAN and other services, Iridium, Thuraya, Globalstar, Mobile Satellite Ventures, Optus Mobile Sat, and ACeS. In addition, UUPlus supports:
- Standard PSTN land lines (conventional telephone "dialup")
- GSM, CDMA, and GPRS mobile phones
- Codan, Pactor III, and HAL HF modems
- IP based data networks including VSAT, MPDS, leased line, local ISP dialup, and broadband.
sending mail over any connection type, UUPlus batches, compresses,
and encrypts the data to make the transfer secure and the transfer
size as small
as possible. Typically non uniform text will compress by a ration
Any attachments associated with email messages are removed from
prior to the batching process, saved into their native format
compressed. By eliminating the MIME encoding necessary to place
file in an ASCII file, we reduce the transmission size of that
one-third. Compression on message attachments is highly dependent
type of file. Image file types such as GIF, and JPEG have their
compression algorithms and do not compress much if at all. Microsoft
Word and Excel files can potentially compress up to 12:1.
A bi-directional, error and latency tolerant variant of the UUCP transport protocol is used. Unlike TCP/IP, which requires a relatively high bandwidth, low latency, and error free connection, UUPlus' protocol is largely unaffected by the speed or latency of the connection, and will tolerate an error rate of up to 30% packet loss. When using IP based connections the same batching, compression and encryption is used. Rather than using a lock-step, chatty, uncompressed protocol such as POP or SMTP with SSL or TLS encryption, UUPlus encrypts at the file level to greatly reduce the overhead required for a secure connection. Even when used over high speed VSAT connections, UUPlus was able to connect during low bandwidth availability times when POP, SMTP, and Web based protocols failed.
UUPlus offers a Satellite Email Service with the UUPlus software
or licenses the software for use in private networks. The United
Nations World Food Programme uses UUPlus software as an integral
link in their Deep Field Messaging System. The governments of
Morocco, Nigeria, and Afghanistan use UUPlus software in their
HF data links. Numerous NGOs such as Médecins
Merlin, New Tribes Mission, and Wildlife Conservation Society
use UUPlus software for their HF and Satellite email needs.
For further information and assistance, contact us at email@example.com.
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