There’s a Topicbox plan for every type of organization.

Topicbox for organizations

Scale your subscription to fit your organization size.

$10/month for up to 10 users


$10/month for up to 10 users
Add even more users:
$2/month per user

Basic includes:

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


$10/month for up to 10 users
Add even more users:
$3/month per user

Plus includes:

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

Early adopter special

Buy now and you can pay for Basic
but get Plus for your first two years.

Topicbox for Communities

$15/month for up to 150 users

Add users: $5 / month per 50 users.

This plan is designed for organizations and other groups that host public discussions amongst their members.

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
  • Max 1 MB attachment size
  • Powerful search within any group
  • Searchable public archives for retired groups
  • Chat support for admins
  • Private communication for organization owners and group admins

Frequently Asked Questions

Do you offer a free trial?

Yes. We offer a one month free trial of Topicbox with up to 10 users, equivalent to our Plus plan.

Are there any limits on the trial?

The trial is equivalent to our Plus plan for up to 10 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.

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.