Mail Vault!

Mail Vault downloads all your mail and allows for fast searching for online and offline access. Several years worth of emails can be searched quickly. Key features Download and store email from nearly all IMAP accounts Search To/From/Cc/Bcc/Subject View your email by folder Reply, Forward, and Compose new mail Delete Mail on the Phone or Server Multiple Accounts HTML email viewing View many attachment types View raw mail HTML, Plaintext, and Headers Support seen message flag Only show attachments view Bulk message delete in search