How can I send a link to one of my forms via email?

You may share the form via email following this guide: https://www.jotform.com/help/303-How-to-Send-a-Form-via-Email 

However, note that this feature has a limit. MAXIMUM FORM BUILDER EMAILS per DAY (Covers the following function: “Reply”, “Forward”, “Test Emails” and “Share via Email in Publish”) :

PAID accounts : limit is 1000/day

Free and Guest accounts  :  20 /day 

In order to avoid reaching the limit you may instead get the form URL and use your email address to share the form as a normal email, this guide will help you getting the form URL: https://www.jotform.com/help/401-Where-to-Find-My-Form-URL 

Thanks.