This is a menu to customize setting of MailStudio.
You can set how to bring server mails, to which e-mail address to set your home mail, how many contents per page can be viewed in each menu, setting of SMTP server to be used for sending mails, and how to encode mail subjects and text.
Now, we will go further into each setup in details.
Server Mail
When SMTP server like Sendmail receives a mail from the external, the primary mail storage area is called Spool, where mails are saved sequentially for each ID.
This mail is called a server mail(spool mail). This server mail is referred to when POP3 server or MailStudio searches for a new mail, and may be brought to the log in or deleted instantly depending on user option.

Default of the server mail is [New Mail Only] and [Delete]. When the mail is used either in web-driven or the old POP method, it's no problem at all.
But when POP mail clients such as Eudora and Outlook are used together with web-driven method, mails to be brought to the server mail should be set to [New Mail Only], mails brought to [Leave].
Likewise, the mail clients such as Eudora and Outlook Express should be set to [Save Mail Copy in Server].
In this case, the web-driven method can be used together with POP3 method. However, when "Leave" is selected, lots of mails are stacked in spool, which then troubles for sending mails.
So, when you select "Save Mail Copy in Server" in Eudora or Outlook Express, you are required to select the menu "Delete in 5 Days". The figure below shows the display of [Save Mail Copy in Server] selected via [Tool]->[Account]->[Properties]->[Enhanced] in Outlook Express.
REPLY-TO

As free e-mail account services are provided in many sites recently, it is common to have multiple e-mail addresses.
Suppose that you have e-mail addresses of Yahoo Mail, Hot Mail and MailStudio. If you have send a mail from Yahoo Mail or Hot Mail and want to receive a responding mail to the e-mail address of MailStudio, you only need to enter the e-mail address of MailStudio in REPLY-TO.
PAGE Size

This item sets the size of the page for contents listed in all menu of MailStudio. For example, if you want to make your folder to display 10 mails in a page, you only set 10 in Page Size.
SMTP Server

SMTP server delivers to the other SMTP server when you actually send a mail from MailStudio. SMTP server may be a server in MailStudio or SMTP server in other external locations.
If SMTP server in MailStudio is down and you need to send a mail right away when there is no way to make a contact with the sysop, you can send a mail by setting to another SMTP server.
If you want to set to the original SMTP server again, you need to click on [Local SMTP Server] and [Save]. SMTP server may be set SMTP server name or IP address.
As most relays are blocked recently, sometimes you can't use SMTP server outside.
So, when you are checking if there is another SMTP server in your network where MailStudio is installed, it is recommended that you take memo in case.
Encoding
The major reason of encoding mails is to prevent breakdown of 2 byte character sets such as Chinese, Japanese and Korean. To prevent from this happening, the mail header or the text is encoded by BASE64 or QP(Quoted Printable).

As the mailer in SMTP server supports ISO-2022-(JP, KR), and ESMTP protocol supports 8 bits recently, 8 bit setting is no problem for sending. But in any mail client, encoding by BASE64 or QP is recommended to prevent 2 byte characters from breaking down in sending, this method is also not available if the receiving mail program can't decode the encoded mails correctly. But this is not a serious problem because most mail clients(Messenger, Outlook Express, other Web mail programs, and etc.) basically support QP or a BASE64.
The basic encoding value of MailStudio is 8 bits because foreign web mail service providers, such as Yahoo Mail and Hot Mail do not support the header decoding for QP and BASE64.