You can use your Yahoo email account on a desktop mail client or on your mobile device through an app to receive and send messages with your Yahoo Mail address and access the account on the web using a browser. The Yahoo IMAP settings make sure that you are able to access mail in all your Yahoo folders both on the email program and browser. Along with this, you will need to configure SMTP settings to send mail using your account.
The Internet Mail Access Protocol (IMAP) administers the receiving and viewing of messages and Simple Mail Transport Protocol (SMTP) administers the sending of outbound messages. When you configure IMAP, you will also be required to configure SMTP. Yahoo also supports Post Office Protocol (POP) that is an email standard responsible for governing the receipt of messages. POP retrieves a message from the server, then deletes it from there, so it is available only on the device onto which it was downloaded. However, IMAP sync messages with the server, so you will see the same thing on all the devices you use to connect to your Yahoo mail account.
In order to use your Yahoo account flawlessly in an email program, you need to set the yahoo mail server settings. Firstly, open the new account wizard of the email program and then enter the settings listed below:
Yahoo SMTP Server: smtp.mail.yahoo.com
These were the important Yahoo mail server settings that you need to implement.
Yahoo also supports application passwords and these one-time-use passwords let a specific program to access your Yahoo Mail account, without needing the use of your account password, if you have enabled two-factor authentication. Sometimes you may face problems in accessing your account if you have forgotten about the two-factor authentication you have set for your account. If you have enabled two-factor verification, you will be required to log into your Yahoo account to create an app password for every PC or mobile device that you are going to use.