Configuring Mozilla Thunderbird IMAP
For the following instructions, we will use a fictitious
person. Please substitute your own personal information when you
configure Thunderbird on your computer.
Full Name: Ned Nash
Ned’s e-mail address is: firstname.lastname@example.org
Ned’s network username is: NEDN
Ned’s secure IMAP server at USC is:
imap.mail.sc.edu and uses port 993
Ned’s authenticated and secure SMTP server at USC
is: asmtp.mail.sc.edu and uses port 2525
- Open Thunderbird and select create new account
- Select Email Account and click Next
- Enter your name and e-mail address then click Next
- Select IMAP
- Enter imap.mail.sc.edu for the Incoming Server
- Enter asmtp.mail.sc.edu for the Outgoing
Server and click Next.
- Enter your username in the Incoming User Name and
Outgoing User Name fields and click Next.
- Enter a name for the account in the Account Name
field and click Next then Finish
- On the menu bar go to Tools -> Account settings
- Select Outgoing Server (SMTP), select your
outgoing asmtp server then click Edit.
- For the description enter USC SMTP server (or
some other description to identify these settings to you
- Enter the following information for the following
- Server Name: asmtp.mail.sc.edu
- Port: 2525
- Check the box for Use name and password. This is
- For User Name enter your network user id. (e.g. NEDN)
- Select the radio button for TLS. This is required.
- Then click OK.
- On the Account Settings screen, select the
Server Settings screen for the account you just created
- For Security Settings select SSL. This
is required. The port number above should change to
- For Server Settings select the options there as
you like. Generally the defaults are adequate; however, you
can read about the options for deleting messages in the
section titled “Managing Deleted Messages” that comes later.
- For Local Directory the default is fine unless
you know you want to store your Thunderbird profile some
place else. If you do then make that selection. Do NOT click
Composition & Addressing
- Now select the Composition & Addressing screen.
It is recommended to uncheck “Compose messages in
HTML format”, but not required. This is your option.
- Also it is recommended to select, “Automatically
quote the original message when replying” and to change
the option to be “start my reply above the quote”
- The settings for Offline & Disk Space, Return
Receipts, and Security are at the discretion of
the user. Generally, the default settings are adequate to
- Click OK when done
- Then in the Folders column click Inbox for the
e-mail settings you have configured (e.g.
- It will then attempt to connect and prompt you for your
password. Enter your password and click OK.
- For further assistance with Thunderbird on the menu bar
go to Help -> Mozilla Thunderbird Help. You can also
find additional help on the Internet through a web search
engine such as google.com.
Managing Deleted Messages
By default, Thunderbird moves deleted messages to the
trash folder instead of actually deleting them. This is so
you can get them back if you delete something by mistake.
However, these messages in the Trash folder still take up
space in your mailbox, thus to really make them go away so
you can reclaim that space, you must right click the
Trash folder and then select Empty Trash.
You can also
change how deleted messages are handled. Instead of having
them moved to the Trash folder you can choose two other
settings, Mark it as deleted, or Remove it
“Mark it as deleted” leaves the message where it is,
but puts a line through it and a red “X” on it to mark it as
deleted. It is now up to you to force the removal of these
messages by right clicking the folder and selecting
Compact this folder. You will have to do this for every
folder that contains messages that are marked for deletion.
“Remove it immediately” does just as the words imply.
The message is removed and frees that space for new
You can select these various options for deleting messages
from the menu bar by going to Tools -> Account Settings
then choosing Server Settings. For the option
“When I delete a message:” make your choice.
If you have any problems using these instructions,
please contact the University Technology Services Help Desk at
(803) 777-1800. You can also schedule an appointment in the
iCARE Center at
your convenience for additional support.