Softwr

APIs · head to head

Svix vs Volt

Svix logo

Svix

APIs

Outbound webhook sending as a service, with retries, signing and a customer-facing portal

From
Free
Rated
-
Full reviewWebsite
Volt logo

Volt

APIs

Account-to-account pay by bank across Europe, the UK, Brazil and Australia

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Svix has a free tier, so it costs nothing to try first.
  • Each has a real cost: Svix the Professional tier at 490 US dollars a month includes the same 50,000 messages as the free tier, so the upgrade buys SLA, throughput and retention rather than volume, which is a jarring step for a growing product.; Volt account-to-account payments carry no chargeback mechanism, so consumers lose scheme dispute protection and merchants lose a familiar framework for handling claims.
  • They diverge on capability: Svix covers Automatic retries, Volt covers Pay by bank.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Svix and Volt actually diverge.

Attributes where Svix and Volt differ
AttributeSvixVolt
Starting priceFreeOn request
Pricing modelPer month by message countquote
Free tierYesNo
PlatformsWeb, Cloud, DockerWeb, REST API

Identical on both: user rating (Not yet rated), category (APIs).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Svix

  • Automatic retries
  • Payload signing
  • Consumer portal
  • Event types and filtering
  • Delivery logs and replay
  • Rate limiting
  • Static source IPs
  • Language SDKs

Only in Volt

  • Pay by bank
  • Circuit Breaker
  • Virtual IBANs
  • Payouts and refunds
  • Verify
  • Stablecoin checkout

What people use each for

The jobs each tool is most often brought in to do.

Svix

  • A SaaS company adding webhooks to its API that does not want to build retry, signing and a customer debugging UI from scratchnot Volt
  • A payments or fintech product whose customers need signature verification libraries in several languages they did not writenot Volt
  • An engineering team drowning in support tickets from customers whose endpoints silently failed and who need self-service delivery logsnot Volt
  • A platform with a small number of very slow customer endpoints that must not delay deliveries to everyone elsenot Volt

Volt

  • A travel seller with high average order values paying percentage card fees it wants to replace with flat transfer feesnot Svix
  • An iGaming operator needing fast deposits and payouts where card acceptance is restrictednot Svix
  • A merchant with heavy card fraud that wants strongly authenticated irreversible paymentsnot Svix
  • A marketplace verifying seller bank accounts before paying outnot Svix

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Svix

  • The Professional tier at 490 US dollars a month includes the same 50,000 messages as the free tier, so the upgrade buys SLA, throughput and retention rather than volume, which is a jarring step for a growing product.
  • Only attempted messages count toward usage, but a customer with many subscribed endpoints multiplies a single event into many billable messages, and forecasting that fan-out before launch is difficult.
  • The open source server is MIT licensed but trails the hosted product in features, so self-hosting is a fallback position rather than a genuinely equivalent option.
  • Routing outbound customer traffic through a third party puts a vendor in the delivery path for events your customers may treat as contractual, which some security reviews will not accept.
  • Payload retention is 30 days on the free tier and 90 on Professional, so anyone needing longer delivery history for audit must pay for Enterprise or log independently.

Volt

  • Account-to-account payments carry no chargeback mechanism, so consumers lose scheme dispute protection and merchants lose a familiar framework for handling claims.
  • Refunds are outbound payments rather than reversals, which changes treasury handling and means a refund can fail for reasons a card refund never would.
  • Conversion is lower than a stored card because the shopper must complete a bank authentication journey, and drop-off varies significantly by bank.
  • Core pay by bank pricing is per transaction but refunds, payouts, virtual IBANs, Verify and fraud tooling are billed separately, so the real cost is a stack of line items.
  • Bank API availability and quality vary across markets, and an outage at a major bank removes a slice of your checkout with no fallback unless you keep cards live.

Pricing, plan by plan

Svix

Free
  • FreeFree
    • 50,000 messages a month included
    • Overage at $0.0001 per message
    • 99.9% uptime SLA
  • Professional$490/month
    • 50,000 messages included, same as free
    • 99.99% uptime SLA
    • 800 messages per second
  • Enterprise$undefined/year
    • Custom volume and rate limits
    • 99.999% uptime SLA
    • Custom retention

Volt

On request
  • Volt pay by bank$undefined/year
    • Per successful transaction fee, quoted by volume and market
    • Separate charges for refunds, payouts, virtual IBANs and Verify
    • Circuit Breaker fraud tooling priced as an add-on

Which should you pick?

Choose Svix if

  • You need automatic retries.
  • You want to start without paying.
  • You work on Web, Cloud, Docker.
  • You also want payload signing.
Svix review

Choose Volt if

  • You need pay by bank.
  • You work on Web, REST API.
  • You also want circuit breaker.
Volt review

Questions people ask

Is Svix or Volt better?
Neither clearly leads. Svix starts at Free and Volt at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Svix or Volt?
Svix has a free tier; the other does not. Paid plans start at Free for Svix and On request for Volt.
Does Svix or Volt run on more platforms?
Svix runs on Web, Cloud, Docker. Volt runs on Web, REST API.
Can I use Svix for free?
Yes. Svix has a free tier, so you can try it without paying. Volt starts at On request.
What is Svix best used for?
Svix is most often used for a saas company adding webhooks to its api that does not want to build retry, signing and a customer debugging ui from scratch, a payments or fintech product whose customers need signature verification libraries in several languages they did not write, an engineering team drowning in support tickets from customers whose endpoints silently failed and who need self-service delivery logs, a platform with a small number of very slow customer endpoints that must not delay deliveries to everyone else. Of those, a saas company adding webhooks to its api that does not want to build retry, signing and a customer debugging ui from scratch and a payments or fintech product whose customers need signature verification libraries in several languages they did not write are not what Volt is typically brought in for.
What can Svix do that Volt cannot?
Svix covers Automatic retries, Payload signing, Consumer portal, Event types and filtering. Volt covers Pay by bank, Circuit Breaker, Virtual IBANs, Payouts and refunds.

Answered from the vendors’ own pages

Svix: How much does Svix cost?

Free up to 50,000 messages a month; Professional starts at 490 US dollars a month with the same included volume but better SLA and throughput.

Volt: Are there chargebacks?

No. Bank transfers are irrevocable, so disputes are handled commercially between merchant and customer, not through a card scheme.

Svix: Can I self-host it?

Yes, there is an MIT licensed server, but it lags the hosted service in features and has no SLA.

Volt: How do refunds work?

As a separate outbound payment initiated by the merchant, which Volt charges for separately from the inbound transaction.

Svix: What counts as a message?

Attempted or transformed deliveries. Retries and messages filtered out because no endpoint subscribed are not charged.

Volt: Which markets are covered?

Europe and the UK, plus Brazil and Australia, on a single API integration.

Svix: Does it handle inbound webhooks?

Its focus is outbound sending on behalf of API providers, not receiving webhooks from third parties.

Share

Related pages

More on Svix

More on Volt

Keep looking

Other head to heads