Goldcast vs ON24: Tactical Platform Choice for B2B Webinar ROI
By Ashutosh Kumar Singh · Published · 5 min read
Quick answer: Goldcast offers a modern, API-first experience with built-in multi-channel reminders and lower per-attendee cost, while ON24 provides enterprise-grade analytics and a larger native audience network. If your priority is tight control over reminder sequencing and a sub-$0.30 CPM, Goldcast wins; if you need deep brand-level reporting and integration with large event sponsors, ON24 is the safer bet.
1. Core architecture – where the platforms diverge
| Feature | Goldcast | ON24 |
|---|---|---|
| Deployment model | Cloud-native SaaS, API first | Hybrid SaaS with optional on-prem add-on |
| Native reminder engine | No (requires external workflow) | Built-in 5-touch email series |
| Audience network | None, you bring the traffic | ON24 Marketplace (average 254 attendees per webinar) – ON24 https://www.on24.com/blog/key-takeaways-from-the-webinar-benchmarks-report/ |
| Real-time engagement | Polls, Q&A, live chat, breakout rooms | Polls, Q&A, hand-raise, virtual booth |
| Pricing granularity | $0.25 per attendee + flat fee | Tiered enterprise contracts, often $1-$2 per attendee |
Key Takeaway: Goldcast is cheaper per head but demands you build the reminder workflow; ON24 bundles analytics and audience reach at a higher price.
2. Building a 11-touch reminder sequence without native support
Goldcast does not ship an 11-touch sequencer, so you must orchestrate it via an automation platform (e.g., Make, Zapier) or a purpose-built tool. ShowUpAI solves this gap by generating an 11-touch reminder sequence timed from about three weeks before the event to after it; channels are email, LinkedIn, Facebook, Instagram, WhatsApp/SMS, Circle.so and calendar invites; the host reviews and approves messages before they send; it tracks attendance by channel. Learn more at https://showupai.live.
Below is a ready-to-paste schedule that works for a 500-registrant B2B webinar:
Day -21 : Email – "Save the date – {Topic}" (subject)
Day -14 : LinkedIn post – teaser video (copy)
Day -10 : Email – "Early-bird download – {Lead Magnet}" (subject)
Day -7 : SMS – "Webinar in 7 days – join link" (copy)
Day -3 : Email – "3-day reminder + agenda" (subject)
Day -1 : WhatsApp – "Tomorrow at 10 AM – add to calendar" (copy)
Day 0 09:00 : Calendar invite – "Live now" (title)
Day 0 09:30 : Email – "Live now – click to join" (subject)
Day 0 10:30 : SMS – "First half-hour replay available" (copy)
Day 0 11:30 : Email – "Replay link + slide deck" (subject)
Day +1 : LinkedIn – "Thank you + CTA" (copy)
Message templates (copy/paste)
Subject: Save the date – How AI is reshaping B2B demand gen
Body: Hi {{first_name}},
Mark your calendar for {{date}} at {{time}}. We'll reveal 3 tactics that lift webinar attendance by 15-20%.
[Add to calendar]
SMS: {{first_name}}, your spot for "{{topic}}" is confirmed for {{date}} {{time}}. Join link: {{url}}
WhatsApp: Reminder – {{topic}} goes live tomorrow at {{time}}. Tap to add to your calendar: {{calendar_link}}
Related reading: Why People Register for Webinars but Don’t Attend – The Real Reasons · Best Time to Send Webinar Reminder Emails for Maximum Attendance
3. Attendance-rate math – Goldcast vs ON24
Example: You run a 500-registrant webinar.
- ON24 benchmark: 60% conversion (ON24 https://www.on24.com/blog/key-takeaways-from-the-webinar-benchmarks-report/)
- Goldcast baseline (no extra reminders): conversion rate comparable to industry averages.
ON24 attendees = 500 x 60% = 300 Goldcast attendees = 500 x 48% = 240
If you add the 11-touch sequence (average lift observed in some B2B tests), Goldcast rises to 60%:
Goldcast boosted = 500 x (48%+12%) = 500 x 60% = 300 attendees
Thus, with the same registration pool, both platforms can deliver 300 live viewers, but Goldcast does it at roughly half the CPM.
When NOT to use Goldcast
- If you rely on ON24’s Marketplace to source 100+ external registrants per event.
- When you need built-in compliance reporting for regulated industries (ON24 offers SOC-2, ISO-27001 out of the box).
4. Deep-dive on analytics & ROI reporting
| Metric | Goldcast | ON24 |
|---|---|---|
| Engagement time (avg) | 42 min (custom report) | 49 min – ON24 benchmark https://www.on24.com/blog/key-takeaways-from-the-webinar-benchmarks-report/ |
| Export formats | CSV, JSON via API | CSV, Excel, PowerBI connector |
| Attribution | Requires third-party UTM stitching | Native multi-touch attribution dashboard |
If your CFO demands a clean ROI sheet, ON24’s native dashboard reduces manual labor. If your growth team prefers API data to feed a BI stack, Goldcast’s JSON endpoints win.
5. Integration ecosystem – plug-and-play vs custom code
- Goldcast: 30+ pre-built Zapier actions, open API for custom webhook to your CRM, marketing automation, or ShowUpAI.
- ON24: 15+ native integrations (Salesforce, Marketo, Eloqua) but most require enterprise admin to enable.
Sample Zapier flow (Goldcast → HubSpot)
flowchart LR
A[Goldcast webhook: attendee joins] --> B[Zapier filter: event_id = 123]
B --> C[HubSpot contact update: set "Webinar Attended" = true]
C --> D[Add to nurturing workflow]
*(Mermaid syntax works in many markdown renderers; replace with ASCII if needed.)*
6. Cost-per-attendee calculator
Assume a 6-month pilot of 4 webinars, each with 500 registrants.
- Goldcast: $0.25 per attendee + $1,000 flat monthly fee.
- ON24: $1.50 per attendee (enterprise tier) + $2,500 flat monthly fee.
Goldcast cost per webinar = (500 x 0.25) + 1000 = $1,125 ON24 cost per webinar = (500 x 1.50) + 2500 = $3,250 Total 4-webinar cost = Goldcast $4,500 vs ON24 $13,000
If both deliver 300 attendees (see math above), CPM (cost per attendee) is:
Goldcast CPM = $4,500 / 1,200 = $3.75 ON24 CPM = $13,000 / 1,200 = $10.83
Result: Goldcast can reduce CPM compared to ON24 when a robust reminder stack is used.
7. Decision matrix – pick the right tool for your use case
Key Takeaway: Align platform strengths with the single biggest friction in your funnel – either cost per attendee or reporting depth.
8. Tactical next steps
- Audit your current reminder workflow. If you’re on ON24 and using only the native 5-touch series, map gaps (e.g., missing WhatsApp).
- Run a split test. Duplicate the same webinar on Goldcast for one week, ON24 the next, keep registration sources identical. Track CPM, engagement time, and CTA clicks.
- Implement the tool for the Goldcast leg to close the reminder gap without building custom code.
- Export raw engagement JSON from Goldcast, load into your data warehouse, and build a custom attribution model that credits each channel’s contribution.
- Report ROI using the cost-per-attendee calculator above; present to finance with a simple two-column table.
9. Frequently asked questions (quick reference)
Frequently asked questions
Can Goldcast match ON24’s 49-minute average engagement?
Yes, if you enable interactive polls, live chat, and the 11-touch reminder stack; many customers report 42-45 minutes baseline, rising to 48+ with those tactics.
Is the ON24 Marketplace free to use?
Access is bundled in the enterprise contract, but you share revenue with ON24 for each external registrant.
Do I need a developer to integrate ShowUpAI with Goldcast?
No – ShowUpAI connects via simple API keys and provides a UI to map fields; the 11-touch flow is auto-generated.
What’s the minimum contract length for Goldcast?
Goldcast offers month-to-month plans; discounts apply at 12-month commitment.
How does GDPR compliance differ?
Both platforms are GDPR-ready, but ON24 supplies built-in data-subject request handling; Goldcast requires you to route requests through your own CRM.
Can I record on Goldcast and host the replay on a private landing page?
Yes – Goldcast provides a replay URL you can embed anywhere; ON24 also offers hosted replay pages with analytics.
Sources: ON24