I'll be picking up the iPad Air in the next few days and am wondering what email app I should use for attachments. This will be my first iPad. My work uses a Gmail hosted email service, and I'm a Gmail user myself, so ideally it would have multi-account support with separate inboxes.

In my work I use the usual mix of .doc, .xls and .pdf documents. From what I understand the default Mail app is not suitable for attachments other than pictures or videos. I'm a big Dropbox user if that makes any difference.

I hear good things about the Mailbox app (by Dropbox), the Gmail app by Google, and about Sparrow.

Any suggestions? Much appreciated.