Invite links are open links that you can add to emails or your website (or basically anywhere), that allow anyone with the link to create a plan.
Invite links are not enabled by default but you can enable them in template settings.
Open a template and click Template settings on the main template page. Then choose the Invite link tab. Toggle Enable invite link and you'll see a unique invite link for this template:

Remember to click Save changes when you're done.
Copy the link and give it to people when you're ready for them to start a plan.
Tip: A common use case is to provide this link in an email as part of other workflows.
After clicking the link, the participant will need to verify their email address using a one-time code. Once that's done, they'll see a page asking them if they want to join the plan. If they confirm, the plan starts just as it would if you'd manually created a plan for them.
Note: A participant can only use invite links to create one plan of each type. If they try and create a second plan, they'll be directed back to the existing one. This is helpful if participants try to use the same link to return back to a plan after creating one.
To enable integration with your CRM, when a template has a CRM associated and a plan is created through an invite link, we'll look for a match in the CRM by email address and link the correct CRM record if we find one.
You'll find more information about that in linking templates to your CRM.