Zeplo

Message queue as a URL prefix, adding retries and delays to any HTTP request

As of 31 August 2026, Zeplo has a free plan and paid plans start at $39/month. A hosted queue you use by prefixing any URL with zeplo. Softwr lists it under APIs. Zeplo is available on Web, Cloud.

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Overview

What Zeplo does

Zeplo is a queue-as-a-service for HTTP requests. Rather than provisioning a broker and writing a consumer, you send a request to a Zeplo-prefixed URL with query parameters describing the behaviour you want: retry counts and backoff, a delay before delivery, a cron schedule, a concurrency limit, or a deduplication key. Zeplo accepts the request immediately, then calls your endpoint according to those rules and records every attempt in a searchable log. The distinguishing property is how little integration it requires. There is no SDK to adopt, no broker to run and no consumer process to deploy; a single URL change turns a fire-and-forget HTTP call into a durable, retried job. That fits Vercel, Cloudflare Workers, Netlify and other environments where long-running background processes are awkward or impossible, and where the alternative is standing up a separate always-on worker just to hold a queue. Pricing is per request: a free Developer tier with 500 requests a month, a Company tier at 39 US dollars a month for a million requests, and additional volume at 10 dollars per million. That is cheap for the value at moderate scale. The trade-off is dependence: Zeplo sits in the execution path of your background work, it is operated by a very small team with no published SLA on the lower tiers, and if it is unavailable your jobs simply do not run. Extra team members cost 15 US dollars each, and the free tier allows only one.

What people use it for

A Vercel or Cloudflare Workers application that needs retried background jobs without deploying a separate always-on worker
A team that wants a webhook receiver protected by a concurrency limit so a burst does not overwhelm a downstream API
A small product needing cron jobs against HTTP endpoints without adding a scheduler to its infrastructure
A developer adding idempotent retries to an unreliable third-party API call with a one-line URL change

Where it falls short

Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Zeplo.

Zeplo sits directly in the execution path of your background work, so an outage at a very small vendor means your jobs do not run at all, and there is no published SLA below Enterprise.
The free Developer tier includes only 500 requests a month and one team member, so it is a demonstration allowance rather than a usable free plan for anything real.
Overage on the Developer tier is 20 US dollars per 100,000 requests, two hundred times the marginal rate on the Company tier, so exceeding the free allowance without upgrading is expensive.
Team members cost 15 US dollars each beyond the plan allowance, which is an odd charge on an infrastructure product billed by request volume.
Log retention is 30 days on both published tiers, so anything requiring longer audit trails on job execution has to be logged separately.

Cross-shopped

What people choose instead of Zeplo

Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.

Zeplovs
Upstash
Upstash: If you want a serverless-friendly queue and Redis from a larger vendor with more infrastructure behind it
Zeplovs
Inngest
Inngest: If you need durable multi-step workflows and event-driven functions rather than single retried requests
Zeplovs
Svix
Svix: If the specific job is delivering webhooks to your customers rather than queuing your own work

Pricing

What Zeplo costs

Taken from the vendor's own pricing page. Prices move, so check before you buy.

Developer

Free

500 requests a month included
$20 per additional 100,000 requests
1 team member
30 day log retention

Company

$39 /mo

1,000,000 requests a month included
$10 per additional million requests
Up to 3 team members
30 day log retention
$15 per extra team member

Enterprise

On request

Volume discounts
Custom team size
Support with SLA
Everything in Company

Capabilities

Features

URL prefix interface
Prefix any endpoint with zeplo.to to queue the request, no SDK required
Retries with backoff
Configurable attempt counts and backoff strategy via query parameters
Delayed delivery
Schedule a request for a fixed delay or a specific time
Cron scheduling
Recurring calls to an endpoint on a cron expression
Concurrency limits
Cap simultaneous in-flight requests per queue to protect downstream services
Deduplication keys
Suppress duplicate jobs with the same key within a window
Request logs
Searchable history of attempts, responses and failures
Team workspaces
Shared projects with per-member billing

Answered, with sources

Questions people ask

Each answer names the page it came from, so you can check it rather than take our word for it.

How does Zeplo work?

You prefix your endpoint URL with zeplo.to and add query parameters for retries, delay, cron or concurrency. No SDK or broker is needed.

What does it cost?

Free for 500 requests a month; 39 US dollars a month for a million requests, then 10 dollars per additional million.

Is it suitable for critical jobs?

It is a small vendor in your execution path with no published SLA below Enterprise, so weigh that against the convenience.

Does it work with serverless platforms?

Yes, that is its main use, covering Vercel, Cloudflare Workers, Netlify and similar environments that lack long-running workers.

Keep looking

Where to go from Zeplo

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Softwr does not host reviews and shows no star rating for Zeplo, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.

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