Hello, Serhii;
I apologize for not responding sooner.
I may be over thinking your request, but I'm a bit confused as to what you mean with your statements
"The format of email address that displaying in Discovery Accelerator is: "<Name Surname> email". For example, "Serhii Kohan skohan@example.com".
If the Last Name is not specified, the EV in the search results in the FROM: or TO: fields, write skohan@example.com. "
Would it be possible for you to do the following and post the results so I can have a clearer idea of the display issue you are experiencing?
1. Look in the DA preview pane for a message with the display similar to "Name Surname email" and note its DiscoveredItemID number in the upper right of the preview panel.
2. Look again in the DA preview pane for a message with the display similar to 'skohan@example.com' and note its DiscoveredItemID.
3. Run the following SQL query against the DA customer database, replacing 'DisoveredItemID#1' with the DiscoveredItemID of the item in Step 1 and replacing 'DiscoveredItemID#2' with the DiscoveredItemID of the item in Step 2, saving the output of the query to a file with the '.rpt' file extention:
SELECT DiscoveredItemID
, Author
, Recipient
FROM tblIntDiscoveredItems
WHERE DiscoveredItemID IN (DiscoveredItemID#1, DiscoveredItemID#2);
4. Copy the contents of the '.rpt' output file into a new entry to this post with a brief explanation of the search criteria used to find those items. If necessary to meet security requirements, change the names and addresses, but keep the formating so I can see exactly what you're describing.