The fastest promise you can keep.
Not padded, because Amazon takes the setting over. Not late, because your account health pays for it. SLAyer holds the line in between, every day, as your week moves.
Monitor-only to start. Nothing writes to your account until you say so.
SLAyer sits between your warehouse and Amazon's promise.
You run a shipping schedule. Amazon runs one number per product. SLAyer is the layer that keeps the two in agreement, every day, without you opening Seller Central.
Your shipping schedule
- Ship days Mon to Wed
- Cutoff midnight
- Closed Thu, Fri
- Holidays and 3PL pickup days
Marketplace SLAyer
Works out the handling time each day requires, per product, and keeps it current as the week moves.
One handling time, per product, per day
- Today 1 day
- Wednesday after cutoff 3 days
Every day you pad costs a sale. Every day you miss costs your account.
Sellers used to pad handling time and ship early. Amazon closed that door. There is one position left to hold.
Amazon takes the setting
Confirm shipments well ahead of your own promise, week after week, and Amazon decides it knows your handling time better than you do. Automated Handling Time takes over the number.
The fastest promise you can keep
A date that reflects the days you really ship. No padding to buy safety, no exposure to a flag. Tight enough to win the sale, honest enough to survive the week.
Your account takes the hit
Miss a ship-by date and Late Shipment Rate climbs toward the 4% threshold, even when the only thing you missed was a day your warehouse was closed.
“Every one day improvement in promised delivery time leads to an average 5% increase in sales.”Amazon · seller notice, June 2026 handling time requirement
Your shipping SLA running inside Amazon
Amazon can't see the days you don't ship. SLAyer translates your real shipping calendar into the settings Amazon does read, and updates them as your week moves.
Ship day
You pack and ship. Handling time counts from here.
Amazon has you closed
Amazon already knows this day is off. Nothing to cover.
You're closed, Amazon isn't
Amazon still counts this as an operating day. We cover it with handling time.
Each day shows the handling time before your cutoff, the cutoff itself, and the handling time after it. Sample account: ships Monday to Wednesday, midnight cutoff.
Keeps the schedule current
Ship days, cutoffs, closures and holidays become the handling time Amazon reads, recalculated as the week moves.
Keeps you clear of AHT
Amazon watches how fast you actually ship, and if it decides it knows your handling time better than you do, it takes the setting over. SLAyer tracks the gap between what you promised and what you shipped, by day of week, so you can see a takeover building instead of discovering it.
Nothing goes live unseen
Dry-run preview before any change reaches Amazon, an audit log of what was set and when, 24-hour rollback, and a kill switch that stops everything.
How the rules changed
Four steps that put every merchant-fulfilled seller in the same corner.
Late was always punished
Miss a ship-by date and Late Shipment Rate climbs. Even when the day you missed was a day you were closed.
So everyone padded
Add a day or two of handling time and ship early. Safe account, and a quiet tax on every order, because a later date loses the sale.
Amazon closed it
Automated Handling Time watches how fast you really ship. Beat your own promise often enough and Amazon takes the setting over.
One place left to stand
Not late. Not padded. The fastest promise you can actually keep, recalculated as your week changes. That is what SLAyer does.
Three ways sellers end up here
The delivery promise was the deciding factor for all of them. Only the timing is different.
Fighting the calendar every week
You ship two, three, four days a week. Amazon assumes seven. You have been adjusting handling time by hand before every long weekend, or paying someone to, and one missed update turns into a flag.
You already know the problem. You want it to stop being your Wednesday night.
Walked away over the promise
The flags kept landing on days you were closed. Rather than keep bleeding account health, you pulled the listings and put the energy into your own site. You assumed it was permanent.
It was a settings problem the whole time, and your account is probably still there.
Did the math and said no
You looked at what Amazon would promise buyers, compared it to a warehouse that ships Monday to Wednesday with a cold chain and a 3PL calendar, and decided the platform was not built for what you sell. You were not wrong about the default.
The default is not the only setting. Your schedule can be described accurately before you list a single product.
Eight founding accounts. Then we close the door for a while.
We are onboarding a small group of perishable and specialty food sellers by hand. You get the product and a person. We get the feedback that decides what ships next.
What you get
- A personal walkthrough of your own Handling Time report and Fulfillment Insights, on the first call
- Your promised-vs-actual handling time by day of week, from your own order history
- Monitor-only to start. SLAyer reads your account and tells you the truth. It writes nothing until you turn that on
- The scheduler, once you are ready: your ship calendar written to Amazon every day, with dry-run preview, audit log, 24-hour rollback and a kill switch
- Direct line to the founder. Same-day answers
What we ask
- One 30-minute onboarding call
- A 15-minute feedback call every two weeks
- Permission to quote you anonymously
Who fits
- Brand-owned seller in the US (Sold by is your brand)
- Perishable, frozen, refrigerated or temperature-sensitive product
- Merchant-fulfilled on at least some SKUs
- Ship two to four days a week, or through a 3PL with a fixed schedule
- Roughly 5 to 50 ASINs
Apply for a founding spot
Five fields. Jesse reads every application and replies personally, usually the same day.
One plan is live. Two are on the way.
SLA Scheduler is what founding beta accounts run today. Operations Sync and Demand Alignment are the roadmap, at the prices we intend to launch them at.
SLA Scheduler
Your ship calendar, written to Amazon every day.
Free for 12 months for founding beta accounts
- Handling time automation from your ship calendar
- One ship calendar: ship days, closures, safety buffer
- Intraday cutoff handling
- Per-SKU include and exclude, FBA excluded by default
- Dry-run preview before any live write
- Audit log and 24-hour rollback
- Kill switch
- Pre-filled Amazon Support cases
- One marketplace · 1 seat
Operations Sync
For more than one schedule, and for seeing trouble before it lands.
Everything in SLA Scheduler, plus:
- Multiple ship calendars: a product group is a calendar
- Per-SKU and per-category schedules
- Predictive at-risk alerting
- Unlimited seats, roles and invites
- Full audit log, per-SKU detail and job history
- Read-only MCP access for your own AI tools
- Webhooks and external triggers
- Origin weather and inventory advisories
- Multi-location handling times · Walmart
Demand Alignment
Stop paying for demand on days fulfillment cannot win.
Everything in Operations Sync, plus:
- Amazon Ads API integration
- Campaign pause and resume by SLA state
- Budget and bid multipliers by operational readiness
- Signals to external PPC tools
- Demand pacing dashboard
- Write-capable MCP and API access
Roadmap prices can change before launch. Founding beta accounts hear first and keep their founding terms.
The things sellers ask first
What access do you need to my Amazon account?
Beta accounts start read-only. SLAyer can see your settings and your orders, and it cannot change anything. When you are ready for the scheduler, you authorize write access to handling time and shipping settings only. Either can be revoked at any time from Seller Central.
Does this touch my listings or products?
No. SLAyer updates handling time and shipping settings, the same values you would adjust by hand in Seller Central. Titles, descriptions, images, pricing and inventory are never touched.
How does this work with Amazon's Automated Handling Time?
Since June 29, 2026, Amazon expects handling time to be accurate, meaning your actual handling consistently matches the value you configured. Ship faster than you promise for long enough and Amazon may take the setting over itself. SLAyer's job is to keep the configured value honest so that does not happen, and to tell you when it already has. Some perishable categories qualify for an exemption; onboarding covers whether yours does, and gives you the support case language to file it.
What if I need to stop it immediately?
Kill switch in the dashboard. Handling time reverts to your preset default, the audit log shows exactly what changed and when, and any change inside 24 hours can be rolled back.
How many SKUs can it handle?
All of them. You choose which products SLAyer manages, FBA products are detected and excluded by default, and you can leave any SKU group out entirely.
I left Amazon over this. Can I come back?
Usually. A dormant account is generally still there, and what drove you off was settings behavior rather than a permanent verdict on your business. Book a call and we will look at what the account actually says before you decide anything.
I have never sold on Amazon because the delivery promise looked impossible.
That is a fair reading of the defaults. Amazon assumes a warehouse that operates every day, and nothing in the standard setup describes a business that ships three days a week behind a cold chain. Describing the schedule accurately from the start is a different exercise than trying to repair it after the flags arrive, and it is the easier one. Worth a conversation before you list anything.
Does it work for Walmart Marketplace?
Not yet. Walmart is on the roadmap after the Amazon scheduler is out of beta. Tell us on the call if Walmart matters to you; it shapes the order we build things in.
What does it cost after the beta?
Founding beta accounts get SLA Scheduler free for 12 months from the day the scheduler goes live on their account. After that it is the standard $49 a month, and you can leave at any time. Operations Sync and Demand Alignment are on the roadmap at the prices shown; founding accounts hear about those first.
Amazon is already deciding what your handling time should be.
Stay ahead of it. Fifteen minutes with your own Handling Time report on screen is usually enough to know whether this is your problem.
Every call is with Jesse Ness, who runs a frozen fish brand on Amazon MFN and built SLAyer for it.
Eight founding spots. No credit card. Not affiliated with Amazon.com, Inc.