Mailguard - How to merge user accounts

When Mailguard automatically creates user accounts, a user with multiple e-mail addresses will likely end up with multiple Mailguard accounts.  These account can easily be merged in to a single account.  This can be done by either the domain administrator or by the user.


User instructions:

  1. Login to Mailguard using the account you want to designate at the primary address.
  2. Go to Settings (Settings).
  3. Under "E-mail Addresses": Enter the Username: and Password: from one of the additional "Welcome to ETRN Mailguard" e-mail(s) and click "Add E-Mail Address".
  4. Repeat for any additional addresses.


Domain administrator instructions:

  1. Login to Mailguard as a domain administrator.
  2. Go to Admin (Admin) => Users.
  3. Under "Link E-mail Address / Alias":
    1. Select the account you want as the primary address in the "User account:" section.
    2. Select the additional e-mail address(es) in the "E-mail address / alias:" section.
  4. Click "Link E-mail Address/Alias"to complete the process.


Thank you for being a ETRN customer. Please contact us if you have any questions.

We Answer Your Questions: FAQ

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

A: The e-mail servers do not limit the size of individual e-mail attachments. The 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.