Attachments come with several potential drawbacks: - Spam Filters: Emails with attachments are more likely to be flagged as spam, reducing your deliverability rates. - Security Concerns: Recipients may be wary of opening attachments due to the risk of malware or viruses. - File Size: Large attachments can increase the email size, leading to slower download times and potential delivery issues. - Mobile Compatibility: Attachments may not be as easily accessible or viewable on mobile devices, which is a significant concern given the rise in mobile email usage.