Here are some things to consider when sending attachments in emails:

1. Check with your email provider to see what the file size limit is for attachments.
2. Compress or shrink the file size if it exceeds the limit. Most file types can be compressed.
3. Consider using a cloud storage system, like Google Drive, if the attachment exceeds the limit.
4. Confirm that the recipient can open the attachment type.
5. Provide written documentation or instructions to the recipient on how to open the attachment.