Yahoo!
Open a message from the desired sender.Now click Add contact next to the From name and address.
Open a message from the desired sender.Now click Add contact next to the From name and address.
Open a message from the desired senderClick Mark as safe next to the From name and addressNow click Add contact
Go to Options and select Block Senders.In the Safe List, type your trusted address or domain.Click OK.
In your hard drive, find your Spam Assassin folder. Click the folder.Open the file named user_prefs with a text editor or Notepad. (If the file does not exist you can create it using the instructions on Spam Assassin’s website.)Make a new line with the text whitelist_from and the trusted address or domain you wish to
Open a message from the desired sender In the From field, right-click the email addressClick the Add to Address Book link in the menuClick the OK button
Open a message from the desired sender In the From field, right-click the email addressClick the Add to Contacts link in the menuClick the OK button
Open a message from the desired sender.Go to the Actions option in the top tool bar.Select Junk E-mail from the drop down menu.Select the Add Sender to Safe Senders List option.
Go to the Status & Settings tab and click AntiSpam.Click Configure and go to the Allowed List tab.Click Add and type the trusted address or domain in the Email Address box.Click OK.
Click on Help & Settings Click Email Settings Click on Safe List In Add an item to this list, type the specific email address or use @xxxx.com to whitelist the domain (note: xxxx has to be replaced with the domain)Click Add
Go to Friends and click Add.Type the trusted address or domain in the space provided. Click OK.