Editing existing e-mail accounts:

To edit e-mail accounts in Mozilla Mail, follow these steps:

On the Toolbar, click Edit and select Mail & Newsgroups Account Settings from the menu.

 

Highlight the name of the account.  In this example, We highlighted "Work".

To the right you'll see five fields.  We're concerned only about three of them:  Account Name, Your Name, and Email Address.

Account Name  =  Enter a name for the account.  It can be anything you wish.  Make is distinctive to help distinguish it from any other accounts you may create.

Your Name  =  Enter your name.
Email Address  =  Enter the e-mail address of the account.

Highlight Server Settings.

 

Server Type  =  This should be a POP Mail Server.

Server Name = The Incoming (POP3) mail server usually follows this format:  mail.ispname.com (or .net).  Replace the "ispname.com (or .net)" with your ISP's name.
User Name  =  Enter your e-mail username (everything before the @).
Port  =  This should be the default setting:  110.

Important:  Do not enable Use secure connection (SSL).

Highlight Outgoing Server (SMTP).

 

Enabling SMTP Authentication:

SMTP authentication is required to send e-mail.  Without this enabled, you cannot send e-mail.  SMTP authentication helps deter would-be spammers from spamming you.

Highlight Outgoing Server (SMTP).

To the right, you'll see three fields:  Server Name, Port, and User Name.

Server Name = The Outgoing (SMTP) mail server usually follows this format: mail.ispname.com (or .net).  Replace the "ispname.com (or .net)" with your ISP's name.
Port  =  The default port number is perfect:  25.

Check the box Use name and password.

User Name  =  Enter your e-mail username (everything before the @).

Click OK to close the window.