An incorrect link in an email has happened to just about every marketer. Thankfully, you can correct those broken URLs after sending them.
Before you start
Things you need to know:
You cannot change default links, such as Unsubscribe, Double opt-in, and View in the browser.
You cannot change the link text or images, only the destination URL of the link.
You cannot change links created using the Links to a page tool.
Change the linked URL in a sent email campaign
Go to Campaigns > Email > Sent and find the campaign.
Select the Summary (page) icon for the campaign name.
On the summary page, select View/Edit next to Hyperlinks.
From the link editor, select the Edit (Pencil) icon next to the link.
Update the URL. When done, Select the Save (tick) icon to save.