> For the complete documentation index, see [llms.txt](https://docs.clockworkhq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.clockworkhq.com/help/frequently-asked-questions.md).

# Frequently Asked Questions

***How do I upload user data into Clockwork?***

You can easily add new user data through our CSV uploader or the API. Please reach out to us for BETA API access.

***Can we segment customers in Clockwork and outreach to specific groups of users?***

Yes, we allow for sophisticated customer segmentation that will allow you to find the right group of users to engage with at the right time.

***Will Clockwork blast our whole customer list?***

No, Clockwork's algorithms will send emails out in timed batches based on your study criteria to make sure we don't annoy your customers.

***When does Clockwork actually engage our customers?***

Your customers will only be contacted during work hours 10am - 5pm in local time for your customers.

***Can we reschedule or cancel scheduled appointments using Clockwork?***

Yes, there are rescheduling and cancel appointment links available on the calendar invites and in the confirmation emails.

***Is it possible to accidentally contact the same customer in two different studies?***

No. Once a customer has been contacted, Clockwork will not be able to reach out to the same customer again for a certain period of time. The current default Do Not Contact time setting is 60 days.

***Is it possible to know when a customer was last contacted?***

Yes. Clockwork automatically tracks the last date of contact and the number of times a customer has been contacted and is visible to everyone on your team.

***What are the available Clockwork variables to use when creating recruiting and reminder emails?***

```
Variables relating to your customers:
{{first_name}} 
{{last_name}} 

Variables relating to the study leader in Clockwork:
{{my_company_name}} 
{{my_first_name}} 
{{my_last_name}} 
{{my_job_title}} 
{{my_company_name}}

Variables related to scheduling in Clockwork:
{{scheduling_link}}
```

## Bonus: Best Practice Tips

> **Find your baseline first** - Use your initial study to get familiar with our tool and establish a baseline for your conversion rates. We suggest 1) using our default template and 2) target customers who show high levels of engagement with your product for your first study.
>
> **Keep your calendar open** - Give your customers more options to book a time with you. Aim to keep your calendar availability high during your studies.
>
> **Archive Often** - kicking off a new study is super easy in Clockwork. We allow customers to edit live studies but it's often easier to archive stale studies and create a new one.