Re-sent Sent Email In Outlook 2010 Showing as Being Sent to the Previous Recipient

Question

When re-sending a previously sent item from within Outlook 2010, after a few seconds, the newly re-sent email is showing as being sent to the last recipient who the email is sent to. For example;
I send an email to [email protected] I then want to send the email to [email protected].. so I click Sent Items, double click the email I have just sent, on the Message tab in the Move group, I click Actions and then click Resend This Message.
I remove the original recipient and add the new recipient and click Send.
I check my sent items a few seconds later and the newly sent email ([email protected]) is showing as being sent to [email protected] However, the re-sent email has actually be sent to the correct recipient. 
I would appreciate any advice on this. 

Answer 1

Hi,
I assume this issue is related to the corrupted nickname cache. Does this issue occur with certain recipients? If so, I suggest you remove the nickname cache entries of these recipients:
Open a new email message.
Type the first few characters of the nickname cache entry that you want to remove from the cache.
When the entry appears in the list of suggested names, move your mouse pointer over the name until it becomes highlighted, but do not click the name.
When the “X” icon appears next to the highlighted name, click X to remove the name from the list.
If this happens to all recipients, we can consider to reset the whole Outlook nickname cache for Outlook 2010:
Open Outlook 2010.
On the File tab, click Options. 
Click the Mail tab. 
Under Send Messages, click Empty Auto-Complete List.
Click Yes.
I hope the information is helpful to you.
Regards,
Melon Chen
TechNet Community Support
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