NiceJob does not allow for sending out bulk review invites, which is designed in order to protect your hard-earned reviews!
The last thing we want is for a happy customer's review to be removed. We are very careful in meeting our review sites' terms of service to ensure your reputation is built up and maintained!
Google's terms of service does not allow bulk sending and will reject reviews that do not follow these terms. Even though it could save you time, it is seen as mass solicitation and can jeopardize your reviews.
The best strategy is to upload your contacts (see linked help article), then invite a few each day. Doing it manually is still a "one click" process, as shown below.
You simply find the contact you want to request a review from and click the "Invite" button! You can then review the campaign messages, or click "Send".