Slido is great. But do you need all of it?

Slido fits large multi-day conferences with polls, surveys, and analytics. If you run a seminar, webinar, or internal event, Postwalls gives you the same moderated wall outcome with a one-time payment, no login, and no subscription.

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Postwalls vs Slido

FeaturePostwallsSlido
Pricing modelOne-time payment per eventBoth one-time and annual available
One-time price (excl. VAT)€39.90 (incl. VAT)Professional one-time: €240 + VAT (~€301 incl. VAT)
Annual subscription (excl. VAT)No subscription requiredEngage €180/yr, Professional €720/yr
Participant registrationNot requiredNot required
Organizer registrationNot requiredRequired
Full moderation modeOptional (available on all plans)Professional+ (€720/yr annual or €240+VAT one-time)
Automatic content filteringYesYes
Disruption controlIP blocking❓ Not verified
Participant limitsNo hard cap100–5,000 (plan based)
Data exportIncludedFrom Engage tier (€180/yr or €60+VAT one-time)
EU servers / GDPREU data handlingCisco infrastructure (verify for your use case)
Custom logo and colorsIncludedProfessional+ (€720/yr annual or €240+VAT one-time)
OBS / vMix supportTransparent screen + JSON feed❓ Not verified
Video embedPro Video (plan based)From Professional tier (embed video into Slido)
Polls & votingNot supportedYes

Comparison updated October 2026. Slido pricing based on official pricing page (slido.com/pricing), excl. VAT.

Using OBS or vMix? See the broadcast setup →

When to choose Postwalls or Slido

Choose Postwalls when:

  • You run a single event and do not want subscriptions
  • A moderated message wall is exactly what you need
  • OBS or vMix integration matters
  • Strict GDPR requirements are non-negotiable
  • Fast setup is critical

Choose Slido when:

  • You run events continuously all year
  • You need polls, surveys, and broader participation formats
  • A large conference budget is available
  • Advanced analytics are a key requirement
  • A production team manages the full stack

Postwalls in one sentence

One message wall, one payment, one event.

Postwalls is a browser-based moderated message wall for live and hybrid events. Participants send messages without an app or login, while moderators decide what gets shown on screen. Ready for production: works directly with OBS and vMix via JSON feed.

Most useful differences in practice

Lower one-time price: Postwalls Pro €39.90 (incl. VAT) vs Slido Professional one-time €240 excl. VAT (~€301 incl. VAT).
Full moderation is available on all Postwalls plans. Slido requires Professional tier.
No organizer account is required to start with Postwalls.
EU-focused data handling is easier to justify for public sector procurement.
No hard participant ceiling for one-off events on Postwalls.

Need a secure message wall for one event?

Start free for 30 minutes. No account. No credit card.

Try Postwalls freeView pricing
New to Postwalls? See how it works →

FAQ

Does Postwalls work like Slido?

For message walls and moderation, yes. Postwalls does not include Slido-style polling, surveys, or broad analytics by design.

Does Slido offer one-time pricing?

Yes, as of 2026. Slido offers both annual subscriptions and one-time event pricing (7-day access). For example, Professional one-time is €240 excl. VAT.

Why choose Postwalls over Slido?

Lower one-time price (€39.90 incl. VAT vs ~€301 incl. VAT for Slido Professional), no organizer registration required, EU data handling, and direct OBS/vMix integration via JSON feed.

Is Postwalls suitable for public sector use?

Yes. Data is handled in the EU and the service is built with GDPR requirements in mind.

Can I try it before paying?

Yes. You get a free 30-minute trial with no login and no credit card.