Every client has their own private scheduling link, which fills in their details on the Self-Scheduler. When you export clients from the client list, each row includes that link in the Self Scheduler Url column. That lets you give every client their own Book Now link in a mailing from Constant Contact or another bulk email program.
If you use Mailchimp, export to Mailchimp instead, since it sends each client's link along with their contact details. See How do I export my Gazelle contacts to Mailchimp?
You need full admin access, and your plan has to include Scheduling. Without Scheduling, the Self Scheduler Url column is empty.
Export the client list
On the web app you pick the clients with checkboxes. On the mobile app, the export includes every client that matches your filters.
On the web app
Go to Clients and add filters for the clients you want to reach.
Check the clients to include. To include everyone that matches, check the box at the top of the list.
Click Edit and select Export to CSV.
Click Save.
On the mobile app
Tap Menu > Clients and add filters for the clients you want to reach.
Tap Edit, then tap Export to CSV.
Tap Save.
Gazelle emails you the spreadsheet as an attachment when it's ready.
Use the links in your mailing
Import the spreadsheet into your email program and map the Self Scheduler Url column to a merge field. Then point your Book Now button at that field, so each client's button opens their own link.
The export includes every client you selected, even ones who've asked not to get email from you. Check the column Default Contact Wants Email to find clients who do not want emails. Remove them before you send.
Each link is tied to one client. If a client forwards your email, the person they send it to schedules with your client's details filled in. See Share Personalized Scheduling Links With Clients.