In the Toolbar options at the top, click the Safe Lists drop-down. Note: This is located in the "Junk Email" section
Select "Add sender to Address book"
Click OK
2.Outlook 2010:
In Outlook, go to the Home tab
Click the Junk button
Choose "Junk E-Mail Options" from the drop-down list
Go to the Safe Senders tab
Type in either the email address or the domain name you wish to add
Click OK
3. Outlook 2013:
In Outlook, go to the Home tab
Click Junk > Junk Email Options
Select the Safe Senders Tab and click Add
In the Add address or domain box, enter the email address or the domain name you want to whitelist
Click OK and close the window
4.Outlook 2014:
In Outlook, go to the Home tab
Click the Junk button
Choose "Junk E-Mail Options" from the drop-down list
Go to the Safe Senders tab
Type in either the email address or the domain name you wish to add
Click OK
5.Outlook 2016:
Open Microsoft Outlook 2010/2013
In the home tab, click the Junk drop down menu
Then click Junk Email Options
Navigate to the Safe Recipients tab
Click the Add button
Type in the email address or domain you want to whitelist, then click OK
6.Office 365 Exchange:
In the Exchange admin center click on Mail Flow
Next create a new rule by clicking on the + icon and click Bypass spam filtering
Select "*Apply this rule if…" for "The sender… domain is"
Add the domain you wish to whitelist
Select "Stop Processing more rules" and then click save
7.Outlook.com (Formerly Hotmail):
Open your Outlook mailbox
Select Options from the top right (next to the question mark)
Select More options > Safe and blocked senders (under Preventing junk email) > Safe senders
In the space provided, enter the address. Example: You can either enter a specific email address or use *xxxxx.com or @xxxxx.com to whitelist the domain (replace the xxxxx with the domain name)
Select Add to list
Ensure the safe mailing lists box has the address you entered, and select OK
From the E-mail settings screen, select Junk E-mail Guard
Select Safe List
Enter the email address. Example: You can either enter a specific email address or use *xxxxx.com or @xxxxx.com to whitelist the domain (replace the xxxxx with the domain name)
Select "Add"
9. Yahoo! Mail:
Click the "Addresses" button
Select "Add Contact"
Save the desired e-mail address to your contacts list
10. Gmail:
Click "Contacts" along the left side of any Gmail page
Click the plus button in the bottom right hand corner of the screen, which says "Add Contact" when hovered
In the primary email address box, type the e-mail address that you want to add
Click "Save"
11. AOL Mail:
Click Contacts in the right toolbar
Click Add Contact
Enter email address and additional information if you wish
Click Add Contact button in the popup to finish
12. Mail for iOS (iPhone/iPad/iPod Touch):
In the email, tap the sender
Select either "Add Contact" or "Existing Contact"
Enter the email address and other information
13. Default Mail client for Android:
In the default mail client, touch the picture/placeholder of the sender