That bug has been described on https://launchpad.net/ubuntu/+source/evolution/+bug/78199

"When trying to make a listserv consisting of 600 people and using the "select " option to make the list each name on the list is duplicated 4 times, one of which has the e-mail address. Also, only one address seems to show when attempting to draft/send a message.Version is Evolution 2.6.1.
...
> Thank you for your bug. What do you call "listserv"? Could you describe some easy steps to trigger the problem from a stock installation?
...
Thank you for responding to my report. I should have used contact list
instead of listserv. Everyone I know uses listserv which may be a term
from Outlook Express. Sorry for causing the confusion.

When trying to setup a contact list, I have been successful in making
short lists of 10 to 20 addresses where each is added individually or
perhaps several at a time but the list I am working on now has 660
people and when copying and pasting that many it does not seem to create
the whole list. Also, when creating the list it will show 4 of each
person's name only one of which has the email address. The others have
street addresses or no information about the person. There is only one
card for each person In the contact list. I created the list from an
Excel file which was converted to a .csv file and then imported to
Evolution to setup the contact list.

The steps to that I am following are:
Select evolution "contacts"
Select mailing list ( ie: Personal List or other created list)
Select "new > contact list
In contact list editor:
Type name for List name
Click on "Select"
In Contact list Editor
Click on an address and Ctrl A
Click on Add
Return to contact list editor:
Left click "add" and "ok"

I hope this helps to clarify the problem I encoutered.

Thanks,
Scotty Michaelsen"