This shouldn't have been removed from master, yet.

Revert "removed valhalla_mail"

This reverts commit 4ef76e4fcc14c06baabc645fdb30a7b703653605.
Dependencies shouldn't have been updated, yet.

Revert "updated dependencies after valhalla mail has been renamed"

This reverts commit 7eb8639f2205cf63605003df6f650f5987f467c3.