A bunch of really useful email contacts: PDF converter, invisible personal assistant, scanner (for real), quick document sharing, and an excellent group conversation starter.
(1) PDF@koolwire.com
Koolwire is a simple, no-login required PDF conversion service. Simply send the document (DOC, PPT, XLS, JPEG, GIF, RTF, and TXT.) to ‘PDF@koolwire.com’ and shortly after get it back as PDF.
(2) WHATEVER@drop.io
Drop.io lets you create so called drops and use them as private file storage boxes. Drops can be shared with others on a variety of access levels (viewer, contributor, etc.). Best of all, each drop gets its own email address, so everything emailed to that email will be added to the drop.