The following articles were included in our Exchange Messaging Outlook (EMO) newsletter published on February 20, 2025.
EMO is a weekly publication. To receive your own copy of EMO by email, subscribe here.
Support Exchange Messaging Outlook Sponsors
Increase Your Productivity!
ReliefJet Essentials for Outlook is a set of more than 160 tools for performing a wide range of tasks in Outlook: processing email messages, contacts, appointments, meetings, tasks and other Outlook items.
Today's Highlights »
- New Outlook: Show To, CC, BCC in Replies
- Classic Outlook (and Office): Remove Tip Boxes
- New Outlook: Import EML files
- Classic Outlook: Permission To Send On Behalf Of Error
- Google Calendar Phishing Attack
New Outlook: Show To, CC, BCC in Replies
When you hit Reply or Reply All in new Outlook, the CC line is not visible, even if the message was CC’d to others. The BCC line is also not shown by default on replies when you have the option set to show it in Settings > Mail > Compose and Reply.
In addition, the To line may be truncated and appears to be part of the message body, with your account avatar or photo to the left of the address (and more prominent). It’s difficult to see where the header ends and the message begins as it all blends together, especially because the subject field is not shown in the reply. It doesn't help that the header scrolls, hiding the addresses.
It's a little better if you expand into a new window - the To and Subject lines are shown as separate lines, although the addresses are in the same "looks like plain text" format as in the inline reply.
If you want to see the To, CC, and BCC fields, either hover over an address for a few seconds until the contact card comes up or click on the address to show the address fields (including BCC if enabled in Settings) and addresses in yellow highlighting and you can add or remove addresses.
If you need to add addresses to the CC or BCC field and they aren't showing, click on the CC or BCC text on the right. This will show those fields.
Classic Outlook (and Office): Remove Tip Boxes
If you are annoyed by the tip boxes that come up in classic Outlook (and the other Office apps) after an update, you can disable them in the registry.
The tip boxes are in this key (and there are a lot!)
HKEY_CURRENT_USER > SOFTWARE > Microsoft > Office > 16.0 > Common > TeachingCallouts
You need to set the DWORD value to 2 to disable. If you want to enable the tips again, change the value to 1.
If you want to disable all on your own computer or to import into another computer, export the registry key and edit the .reg file in notepad. Search and replace 00000001 with 00000002.
Note: the list of callouts is likely to grow with each Office update, but even so, it’s a good start to export the registry so you have it if you need to reinstall Office and don't want to deal with the tips you've already seen.
New Outlook: Import EML files
New Outlook now has the option to import EML files. While this was added for Windows Mail users who exported their mail before switching to new Outlook, it's available for anyone who has EML files they want in new Outlook.
Only EML files can be imported and you can’t pick and choose which files to import – you select the folder where the EML files are and new Outlook Imports the entire folder. If your EML files are sorted into subfolders, you need to import each folder separately.
You can import the mail into either Outlook.com or IMAP accounts. The imported mail will sync back to the server.
The import feature is at View tab > View settings > General > Import. If it is not in your Outlook yet, it is coming.
Note: Messages in Classic Outlook's MSG format are not supported for importing into new Outlook, only EML files.
Screenshots and the latest information:
Classic Outlook: Permission To Send On Behalf Of Error
Microsoft is investigating an error in classic Outlook where Outlook.com accounts receive an error when they try to send mail: "You do not have permission to send on behalf of the specified user."
The problem is that the user is trying to send using the outlook.com account and should be able to send using their primary address or one of the aliases on their account.
This error is more common when the user has both an outlook.com and a Microsoft 365 business or school account.
Microsoft is investigating and until it is fixed, workarounds include using Outlook on the web or new Outlook. You could also create two separate profiles, with the outlook.com and work or school account in the other profile, but switching profiles is too cumbersome for many people.
Microsoft support article: Classic Outlook error when sending from Outlook.com "You do not have permission to send on behalf of the specified user."
Google Calendar Phishing Attack
If you use a Google account, you could be susceptible to a calendar phishing attack.
How it works:
The bad guys send an invitation that looks like a Google Calendar invite, modifying the email headers of the invite to make it look like it was sent by a legitimate company or person.
A link in the invite goes to a phishing page where victims are asked to complete a fake authentication process, share personally identifiable information and other information, which can be used for financial scams and other fraudulent activities.
Because Google scans were flagging the original malicious calendar invites as spam, the attackers started using Google Forms links in the calendar invite to get past the scans. The Google form has a link that leads to the phishing page.
To help avoid being scammed, Google recommends changing the “known senders” setting in Google Calendar.
1. Click the Gear icon on the top right of the Google Calendar, then click Settings.
2. On the left, click Event Settings. Click Add Invitations to My Calendar to access the drop-down menu.
3. Click Only if the sender is known.
This will allow invites from people in your contacts, who've sent mail to, or coworkers to be added to your calendar but keep events from people you don't know from being added to your calendar automatically.
Now if only Outlook had a similar setting to block meeting request spam…
New & Updated Outlook Support Articles
Classic Outlook jumps in the message list when clicking an email or scrolling
Classic Outlook mail merge hangs trying to initialize Word
Outlook icon on the Start menu is not updated to Outlook (classic)
Outlook 2016 MSI is not showing sender in search results
Unable to drag and drop emails to folders in classic Outlook
Users may experience an error when updating a meeting in their own or a shared calendar