Eudora Pro has the capability to define and use multiple email accounts and email servers. While this is quite helpful, there is no mechanism in Eudora Pro to facilitate changing these account settings depending on your network settings. While NetSwitcher does have the ability to modify your Windows networking settings, the settings for email servers are application specific and therefore each individual email client program must be supported. While we are working on adding support for the most popular email clients into NetSwitcher, many users have asked for assistance in this.
This FAQ describes a method of switching the default mail account in Eudora Pro V4.x using the NetSwitcher RunCommand feature. This method may be useful with other Eudora versions but no attempt to verify the accuracy of this with other versions has been made.
Step 1: Eudora Pro stores its SMTP and POP server information in its INI file. This file is found in the same folder as the Eudora.EXE program file. By default, this will be:
C:\Program Files\Qualcomm\Eudora Mail\Eudora.ini
Please locate this file and note that your file location may be different depending on how you installed Eudora.
Step 2: Create a folder called Configs under C:\Program Files\Qualcomm\Eudora Mail and copy your current Eudora.ini file into it. Rename this copied file (not your original Eudora.ini file) to some name relating to its configuration. In my case, I used NETSW.INI to reflect the mailserver at netswitcher.com.
Step 3: Start Eudora and configure it for your alternate mail server configuration. If you are just having trouble sending mail due to SPAM prevention measures on your ISP (i.e. you are getting the "Relaying Denied..." message) all you usually need to change is the SMTP server address. Once you've changed this, exit Eudora and then copy the now updated Eudora.ini file to the Configs folder. Rename it to some name relating to its configuration. In my case, I used WR.INI to reflect another email server I use.
Step 4: To make this simpler in the NetSwitcher user interface, we setup a Windows BAT file as follows and store it in C:\Program Files\Qualcomm\Eudora Mail\Configs:
@ECHO OFF
SET EUPATH=C:\Progra~1\Qualcomm\Eudora~1\Configs\%1
SET INPATH=C:\Progra~1\Qualcomm\Eudora~1\Eudora.ini
SET CPCMD=COPY /Y %EUPATH %INPATH
%CPCMD
Of course, your file may differ slightly depending on where the files for your Eudora Pro installation are stored.
Step 5: Start NetSwitcher and go to the Extensions tab. Configure one to look like:

Click OK on this dialog and then SAVE this configuration with the SAVE button.
Now configure the another to look like:

And then save this configuration out under another name.
Step 6: That's all there is to it..... Test the setups out to make sure you have everything correct and then.... Enjoy!