Skip to content
Cambium AppsCambium AppsCambium Apps Help Center

Going live

Verify your domain, accept the Acceptable Use Policy, and subscribe to start sending from your own domain.

Overview

Section titled “Overview”

Live sending means your emails go out from your own verified domain instead of the sandbox address, and the 20-send sandbox limit no longer applies. Three things have to be true:

  1. Your sending domain is verified.
  2. A Super Admin has accepted the Acceptable Use Policy.
  3. Your Base subscription is active.

You can do them in any order. Live sending starts the moment the last one is done.

Before you begin

Section titled “Before you begin”
  • The Super Admin role in HubSpot.
  • A sending domain added in Settings → Sending domain. Verification can finish before or after you subscribe. See Setting up your sending domain.
  • Payment details for Stripe checkout.

Steps

Section titled “Steps”
  1. Open Settings → Billing. In HubSpot, go to Marketplace apps → Transactional Email and open Settings.
  2. Click Review and accept the policy. Read the Acceptable Use Policy and click I accept. Billing then shows which version you accepted and when. The full policy is at cambiumapps.com/transactional-email/acceptable-use.
  3. Click Subscribe for $89/month. Stripe checkout opens in a new tab with your HubSpot email address filled in.
  4. Complete checkout. Enter your payment details and confirm. The email you use here becomes your billing email.
  5. Return to HubSpot and refresh App Home. Billing shows the Base plan as Active.
  6. Set your auto-buy budget (optional). In Settings → Billing, enter how much auto-buy may spend on extra emails each month under Monthly auto-buy budget ($), and click Save budget. It starts at $0 (off). Extra emails are billed on your next monthly invoice. See How your email allowance works.

Once your domain is also verified, you’re live: Sending status on App Home shows Live, from your domain, and the Get set up checklist shows Setup complete.

What happens next

Section titled “What happens next”
  • You get a confirmation email. “You’re live: sending from <your domain>” when everything is in place, or “Your Transactional Email subscription is active” if your domain still needs to verify.
  • Warm-up starts. Day 1 is the day you go live. Your new domain sends up to 100 emails a day in the first week, rising until it’s uncapped from day 31. See How warm-up works.
  • Your billing period starts. Base includes 1,000 emails per billing period, starting on the day you subscribed.
  • The sandbox sender stops. Workflow actions set to Sandbox sender (sandbox only) fail with sender_invalid. Switch them to one of your sender profiles in Settings → Sender profiles before you subscribe.

Common questions

Section titled “Common questions”

I paid, but sends still come from the sandbox address. Your domain isn’t verified yet. Until it is, sends stay in sandbox mode and count against the 20 sandbox sends. Check Settings → Sending domain. This only happens before you first go live: once you’ve been live, a domain that stops verifying makes sends fail with sender_invalid instead of going back to the sandbox.

I don’t see the Subscribe button. Accept the Acceptable Use Policy first — the button appears once it’s accepted. Only Super Admins see it.

Can I pay annually or by invoice? No. Base is a monthly subscription paid through Stripe, one per HubSpot account.

Section titled “Related articles”