This page is part of #9032 and is under construction.
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## Integration of blobs into bitmask.mail (on demand download of message bodies)
A client-encrypted blobs system was added to Soledad Client and Server mainly to solve two things: performance issues of crypto and network operations when dealing with large binary chunks of data, and the ability to control when this kind of data will be transferred.
The first user of this system will be `bitmask.mail`, which implements an IMAP backend using Soledad traditional JSON-based documents. The application has to be modified to store email payloads as blobs, and to allow for on-demand downloading of email content.