Scheduling Reminders
Ethnio allows you to automatically remind your participants of study times via email, text message, or phone call. You can set these up in Scheduling › Reminders.
Text messages come from the Ethnio (415) phone number and work in any country in the world, depending on individual carrier restrictions. If anyone replies, they will not get any response. More info: https://help.ethn.io/article/564-sms-replies

Reminder types and timing
In Scheduling › Reminders, you can turn on an email reminder, a text message reminder, a phone call reminder, and a consent reminder, which asks participants who have not completed your consent form to do so before their session.
The timing you choose for each reminder is counted back from each participant's own scheduled session time, not from the moment you turn the reminder on. For example, a reminder set to 24 hours before a session that starts at 2:00 PM on Thursday goes out at 2:00 PM on Wednesday.