SECURITY AND SMARTS
Google's Bank said the overhaul was required primarily to provide offline access to up to 90 days of emails for users who turn on the feature.
The changes also fulfill another top demand of business executives - message expiration.
Users who enable a "confidential" option when sending an email can time-limit its access to recipients and also require they enter a one-time passcode sent to their phones to read it.
The new setting does not override corporate email retention policies or present new obstacles to law enforcement.
"Nudges" and a higher bar for new-mail notifications round out Google's revised sales pitch. The company estimated that nudges will lead 8 percent of business users each week to remember to follow-up on something important.
Cosmetic changes bring Gmail's website in line with Office by placing Google's calendar, tasks and note-taking services within the same page as emails.
Bank said testers have advanced from "neutral to positive to very positive" on the new look.
