Less Risk

  • Never lose your email
  • Secure service, even in crisis
  • No equipment to maintain
  • No compatibility issues
  • Scalable to meet your needs
  • Upgraded regularly

More Benefits

  • Web-based administration
  • 24/7 access
  • Completely secured connections
  • Manage users and accounts
  • 1 GB email storage
  • Custom configurations available

Do you have an on-premise Exchange Server and appear to be missing e-mails since January 1st? It is likely that your system is being affected by what is now known as the Y2K22 Bug.

Are you receiving unwanted e-mails that contain Microsoft Office files with macros? As you may know, these macros can do virtually anything that any other executable file can. Given this, the potential for malicious content is extremely high and blocking these files is strongly recommended. But, this feature is optional because there are still many people that exchange legitimate files containing macros.

If you would like to enable this protection, please contact us and request that we enable the OFFICE_MACRO rule-set for your account.

Please support Big Shoulders Fund

Submitted by Robert Sanderson on Tue, 04/07/2015 - 12:57

Here is an awesome letter that I received from John Moran at Big Shoulders Fund this morning.  They are doing incredible things for the children in the neediest areas of Chicago.  They deserve your support too!





What happens if there is a catastrophe?

Submitted by admin on Mon, 05/10/2010 - 07:13

It's impossible to predict the unknown. Disasters, both large and small, can cripple your business. Whether catastrophes are through natural disaster or from equipment failures, ETRN keeps you protected.

Trust ETRN to keep your data, email, contacts and correspondence safe, accessible and available 24/7 365 days a year. We know to expect the unexpected (we've experienced it many times) and assure you that if you face a dire circumstance, ETRN will be here to help you through it.

Try our services for 30 days free

Click HERE to find out more

We Answer Your Questions: FAQ

Q: What is the maximum e-mail attachment size?

A: The ETRN.com e-mail servers do not limit the size of individual e-mail attachments. The ETRN.com e-mail servers do impose a 400 MB maximum total message size limit. Individual customers can choose a smaller message size limit. We can also customize the handling of "over-sized" e-mails. Please contact us to discuss your specific needs. A couple of important facts:

1. Attachments are typically encoded in what is called Base64[1]. As a result, the actual length of MIME-compliant Base64-encoded binary data is usually about 137% of the original file size.

2. E-mails often contain both plain text and HTML components. This also increases the overall size of the e-mail.


“The thoroughness and expertise that I have experienced with ETRN gives me peace of mind that our E-mail is going to function properly. I believe that we are receiving the full value of their services. I have yet to experience any issues in service that has resulted in mail interruption.”

Matt Mogenis, Knaack Manufacturing Company

“Outsource Solutions Group has partnered with ETRN.com since 2000 to provide exceptional web and e-mail services to our growing and dynamic customer base. ETRN.com’s service offering goes way past traditional commodity e-mail and hosting services enabling Outsource to deliver customized solutions that meet customer specific requirements. The greatest benefit in partnering with ETRN.com is their world class technical support. Our customers demand 24X7 availability for electronic communications and ETRN.com’s support allows us to deliver on that promise every time.”

Don Sofolo, President, Outsource Solutions Group, Inc.