Yes! When you're ready to send out an email marketing campaign, you will have the opportunity to update the sender information if needed. To start, navigate to the campaign you'd like to send under the campaign builder portion of your marketing tool. Click on the name of the campaign, then click on the send button at the top right of the page.
Select the contacts you'd like to send the contact to and click on continue to access the Sender Info section.
Here, you can update the From Name and email address, as well as the email subject.
For the full instructions on sending a campagin, click here.