Large files can pose several risks: 1. Loading Time: Emails with large attachments or embedded files take longer to load, which can frustrate recipients and lead them to abandon the email. 2. Inbox Quota: Many email service providers have a limit on the size of incoming emails. If your email exceeds this limit, it may not reach the recipient's inbox at all. 3. Spam Filters: Emails with large files are more likely to be flagged by spam filters, reducing your chance of reaching your audience. 4. Mobile Users: A significant portion of email is read on mobile devices. Large files can consume excessive data and take longer to download, leading to a poor user experience.