Problem:

I want to use Toolset to build a volunteer database with features including event creation, volunteer signups, profiles, reporting, email communication, and limits on volunteer signups for events.

Solution:

Toolset can handle most of your requirements, but some features may require additional plugins or custom development:

Event Creation with Volunteer Opportunities:

Use Toolset to create a custom post type for "Events."
Add custom fields or a related post type for "Volunteer Opportunities."
Volunteer Signups:

Use Toolset Forms to create signup forms that connect volunteers to events.
Volunteer Profiles:

Use Toolset to create a "Volunteers" custom post type with custom fields for contact and background information.
Reporting:

Use Toolset Views to generate reports showing the number of volunteers per event and their assigned roles.
Email Communication:

Toolset does not handle mass email sending. Use a plugin like WP Mail SMTP or integrate with a service like MailChimp.
Volunteer Limits per Event:

Custom code may be required to enforce signup limits.

Relevant Documentation:

https://toolset.com/course/wordpress-directory-and-classifieds-sites/

https://toolset.com/course/wordpress-membership-sites/