Topicbox for organizations

Turn your team discussions into shared knowledge.


Price per user:

Basic includes:

  • Unlimited private groups
  • Unlimited public groups
  • Powerful search within any group
  • Attachments up to 1 MB
  • Email and chat support

New user special

Get your first 10 users for
only $10 – on either plan!


Price per user:

Plus includes:

  • Unlimited private groups
  • Unlimited public groups
  • Powerful search within any group
  • Organization-wide search
  • Attachments up to 20 MB
  • Phone, chat and email support
  • Use your own domain
  • Customizable branding​*

Topicbox for Communities

Power public discussion with Topicbox. Host up to 150 users for:


Add more users at $5 / month per 50 users.

For organizations that host public discussions, get the power of Topicbox at a discounted rate.

It’s perfect for community groups, user and hobby groups, conferences, events and other community-based organizations that have a large public engagement component.

More than 10,000 users? Talk to us

Communities includes:

  • Unlimited public groups
  • One private group for your community organizers (up to 10 members)
  • Powerful search within any group
  • Attachments up to 1 MB
  • Email and chat support for admins

Frequently Asked Questions

What’s the difference between a public group and a private group?

In a private group, the discussions and member list are only visible to the group’s members. With a public group, discussions are public (no login required) and the member list is visible only to admins.

Do you offer a free trial?

Yes. We offer a one month free trial of Topicbox with up to 20 users, equivalent to our Plus plan.

Are there any limits on the trial?

The trial is equivalent to our Plus plan for up to 20 active users.

What types of payment do you accept?

We currently accept Visa, MasterCard and American Express.

Do I need to sign a long-term contract?

No, you can cancel your account at any time and there will be no further payment required. Please note: we do not offer refunds for unused subscriptions, so please use your free trial to make sure Topicbox is right for you.

Is there a discount if I pay yearly?

Yes, accounts that prepay for their users get 12 months of service at the cost of 10 months – two months free!

Can I switch between monthly and yearly billing?

Yes, you can switch billing frequency at any time. The new billing rate will take effect on your next renewal date.

Can I move existing group mail/listserv lists from another provider to Topicbox?

Yes! Please contact Topicbox support and we will help you directly with bringing over existing groups to Topicbox.

What if my needs change later?

You can upgrade or downgrade your plan at any time; the new plan instantly comes into effect. A pro rata credit for the remaining time of your previous plan will be deducted from the cost of your new plan. You can also add or remove users at any time, with a pro rata credit for any unused subscription.

Can I use my own domain with Topicbox?

You can use your own domain for your Topicbox email addresses. Once you’ve started a trial, contact support to get set up.

What other limits are there?

All of our account limits – including those for sending and receiving mail – are based on your account plan, and are documented in our help.

Do I have to use the web interface to access Topicbox?

Users can read and respond to group messages through their preferred email program, or answer them on the web. You will need to visit to confirm any admin, user and security settings for the organizations and groups you manage or join.