Mailvio allows you to make custom unsubscribe pages.
An unsubscribe page is the page recipients are redirected to if they wish to unsubscribe from your newsletters.
You must create an unsubscribe page in SendinBlue as you can’t use your own unsubscribe links.
In order to make or modify an unsubscribe page, go to the "Settings" tab then personalize under the 'Unsubscribe page' card.
Once you are on the Unsubscribe page panel, you will be able to edit the default unsubscribe page, or create a new one.
Regardless of which option you will choose, you will be redirected to a page builder where you will be able to change colors fonts, insert links, even edit the source code.
Once you have created an Unsubscribe Page, send yourself a test email to make sure that your links are working properly.