Yes, you can! However, we don't recommend using images in your sequences, as the main purpose of most cold emails and follow-ups is to look like they're 100% handwritten. When you send regular emails, you usually don't include images. You just send your customer an email with a human message.
If you still need to add an image, please contact [email protected] or our Live Chat support agents and we’ll enable this option for you.
P.S. Try to avoid using an image with spaces in the name. Some email clients make auto-replacing "-" to "+" and it can break the link.