Unblock picture downloads for a single message
You can unblock downloads of linked pictures and other external content for a single message that comes from a trusted source.
Choose the InfoBar at the top of the message, and then click Download Pictures.
When you click Download Pictures in a message that you're previewing in the Reading Pane, the message is saved automatically and displays the pictures again the next time that you open the message. But if you click Download Pictures in an open message and want the images to display the next time that you open the message, you must save the message.
Unblock picture downloads for all messages
If you are using an old version like Outlook 2007, please follow the below steps.
On the Tools menu, click Trust Center > Automatic Download.
Clear the Don't download pictures automatically in HTML e-mail messages or RSS items check box.
If you are using the newer versions of Outlook, please follow the below steps.
On the File tab, choose Options > Trust Center.
Under Microsoft Outlook Trust Center, click Trust Center Settings.
Clear the Don't download pictures automatically in HTML e-mail messages or RSS items check box.
Unblock picture downloads for all messages from a particular email address or domain
In an open message that was sent from a particular email address or domain, right-click a blocked item.
Do one of the following:
a) Click Add Sender to Safe Senders List.
b) Click Add the Domain @domain to Safe Senders List.
Follow the below steps to add the domains to safe sender list
Connect to Exchange Online
Import-Module ExchangeOnlineManagement
Connect-ExchangeOnline -UserPrincipalName <username> [Example:
Retrieve all user mailboxes
$mailboxes = Get-Mailbox -RecipientTypeDetails UserMailbox -ResultSize Unlimited
Apply the trusted sender configuration to each mailbox
foreach ($mailbox in $mailboxes) {
Set-MailboxJunkEmailConfiguration -Identity $mailbox.Name -TrustedSendersAndDomains @{Add=("linktologin.com","linktosso.com")}
}
Verify changes for a sample mailbox
Get-MailboxJunkEmailConfiguration -Identity <username> [Example: “abc”]