Yes for sure you can use hbase for this, you can have
1. different fields of mail in different column of a column family and
attachment as a binary array also in a column.
2. you can keep whole message in columns in hbase and the attachments are
large enoug on the hdfs and some reference to it in hbase table.
3. schema you can decide, you can have a matrix how you store values to
that you can decide.
* Shashwat Shriparv*
On Tue, Feb 25, 2014 at 12:55 PM, Upendra Yadav <[EMAIL PROTECTED]>wrote: