For large RAW deliveries, use a file-transfer or cloud-sharing service rather than email attachments. Community suggestions included Dropbox or similar shared-folder services, temporary large-file services like Dropsend or YouSendIt, and hosted file servers such as Egnyte. These let clients download files directly and often offer private sharing, access control, and larger transfer limits than email.

Another option is an FTP server: create a client account with read-only access to a folder containing their images. That can be quick to set up and easy to automate if you already manage hosting.

In practice, the easiest solution for most photographers is a private shared folder or file-transfer service, since it requires less technical setup than FTP and is simpler for clients to use.