It's possible to edit:
the name of the campaign
the address that replies should be forwarded to
the links in the campaign
To access the Summary page:
Go to Campaigns > Email.
Select the Sent tab.
Select the campaign's Summary (page) icon.
Campaign summary page
The campaign summary page lists the details of the campaign.
Edit the campaign name
In the upper left corner, the campaign name is shown.
Select the name.
Enter your changes.
Select the tick.
Edit the forwarding address
To edit the address that replies are forwarded to, select EDIT for Forward replies to.
Replies may be forwarded to one address at a time only.
If the field is blank, replies won't be forwarded.
Edit links
You can edit links after a campaign has been sent. To do this, select VIEW / EDIT for Hyperlinks.