A Mystery Greeter in Toastmasters meetings is a non-traditional, custom role designed to assess and ensure a welcoming environment for all attendees, especially guests. This role is not officially listed in Toastmasters International's standard handbooks like The Navigator, but it is adopted by various clubs to enhance the member and guest experience and foster a positive first impression.

The primary responsibility of a Mystery Greeter is to anonymously observe and report on how well members welcome and interact with others, particularly new guests, during a meeting. This individual acts as an incognito observer, assessing whether members are friendly, approachable, and actively contribute to creating a positive atmosphere. For instance, they might monitor if members shake hands with everyone or if guests are promptly greeted and introduced to others. At the end of the meeting, the Mystery Greeter typically provides a report, often revealing their identity at that point, to share their observations and highlight areas where the club excelled or could improve in terms of hospitality. This feedback helps clubs ensure that their meetings are inclusive and that every person feels welcomed and comfortable, which is crucial for guest retention and member satisfaction.

This role is an example of how Toastmasters clubs can introduce unique meeting roles to "spice things up" and add their own signature to the standard meeting format, moving beyond the traditional roles like Ah-Counter or Timer. The flexibility within Toastmasters allows clubs to create their own unique personality and address specific needs, such as ensuring a strong, welcoming community. The Mystery Greeter role contributes to building a strong foundation for successful club meetings by emphasizing the importance of making guests feel part of the group from the moment they arrive.

While the Mystery Greeter's primary function is observation and feedback on welcoming practices, other non-traditional roles also exist to enhance meetings, such as the Quiz Master, who tests listening skills, or the Watcher, who provides tips on virtual meeting presence. These custom roles, including the Mystery Greeter, serve to develop members' skills in fresh ways and keep meetings engaging and educational.