What Problem Is SourceDay Built to Solve?

SourceDay started in 2013 in Austin and has been focused on one thing since: PO lifecycle management. Tracking what happens after the purchase order leaves your ERP.

Supplier confirms a delivery date. Date slips. Price changes. Partial shipment. SourceDay catches all of that and pushes the update back into SAP, Oracle, NetSuite, Epicor, Infor, or Acumatica. Their ERP integration depth is real, and the platform is purpose-built around the PO lifecycle.

But it's a platform built in 2013. The AI layer (SourceDay Intelligence) was added later, on top of a system that was designed around supplier portals and EDI. It can flag which PO lines look risky. It doesn't read a supplier's email, understand the context, extract the delivery update, and act on it automatically.

That's the architectural difference. And it starts at the PO. Nothing upstream.

Where Does Everything Before the PO Go?

This is the question most comparison pages skip. Your buyer doesn't wake up with a purchase order ready to track. She wakes up with a requirement from engineering, a list of potential suppliers, and a lot of emails to write.

They creates an RFQ, sends it to six suppliers. Three respond within 48 hours, two a week later, one never (you'll follow up twice before giving up). The quotes come back as PDFs in completely different formats. One supplier puts pricing in a table buried on page four. Another sends a one-liner email with a number and nothing else, no breakdown, no lead time, no payment terms. Your buyer opens each PDF separately, scrolls around, copies unit prices into column F of the comparison spreadsheet she built in 2022, adds freight estimates, then manually calculates landed cost with whatever tariff adjustment is current this month. The whole thing takes a morning.

That entire morning? SourceDay doesn't exist for it.

Lumari does. Lumari sends the RFQ, follows up with non-responders, extracts pricing from whatever format the supplier uses (PDF, Excel, email body), normalizes it all into a comparison, and tracks the PO after you award it. One system from "we need quotes on this" through "it arrived at the dock." We've written about how much time manual RFQs actually cost, and the numbers are ugly.

Does SourceDay Handle Supplier Follow-Ups?

Yes, for POs. If a supplier hasn't confirmed an order acknowledgment, SourceDay can help. Some companies struggle with the supplier adoption to get things fully working.

For anything upstream? No. Your buyer chasing three suppliers who haven't responded to an RFQ? That's still Gmail and calendar reminders. The quote that came in with the wrong part number? Manual clarification email. The supplier who quoted but forgot to include lead times? Another email. SourceDay's follow-up engine only kicks in once a PO exists.

Lumari handles follow-ups across the full cycle. RFQ reminders, quote clarification requests, PO confirmations, ship date updates. All through email, all automated. We covered this problem in depth in our post on why procurement teams can't stop chasing suppliers.

The Supplier Adoption Question

Here's where the architectural difference matters most.

SourceDay gives suppliers three options: a portal, EDI, or email-based workflows. But all three still require the supplier to do something they weren't doing before. Log into an account. Update a field. Respond through a specific channel. That's extra work on their side, and most suppliers won't do it consistently. Especially the smaller, faster-moving ones you're counting on for quick-turn parts.

G2 reviewers have called this out directly: one noted "getting people to use another portal is challenging, with a number of suppliers refusing." The platform can't track what suppliers don't report to it. And the suppliers who are least likely to adopt a portal are often the most important ones to track: the ones with tight lead times, the ones prone to slipping dates, the ones you're chasing by email every week anyway.

Lumari works through email, and that's the whole point. Your suppliers don't create accounts. They don't log into anything. The regional fastener distributor who replies to everything as a PDF scan? The contract manufacturer in Shenzhen who responds on his phone at 11pm? They're in Lumari from the first interaction without knowing it, because they're just replying to email.

That changes your coverage from 60-70% of suppliers to 100%.

How Does ERP Integration Work?

Lumari connects to SAP, Oracle, NetSuite, Epicor, and others, and we build the integration around what you actually need. Supplier sends a quote? Lumari reads it, extracts the data, and writes it back to your system. PO confirmation comes in? Same flow. The ERP stays current without your buyers toggling between systems all day.

The difference is philosophy. SourceDay's integration model was built for portal-based workflows: suppliers update a field, the platform syncs it to your ERP. Lumari's model reads what suppliers actually send (emails, PDFs, whatever format) and maps that into your system automatically. You're not configuring which portal fields map to which ERP fields. Lumari figures out what the supplier said and puts it in the right place.

For most teams, that's actually more flexible. You're not locked into a fixed integration schema built around a portal workflow that half your suppliers won't use anyway.

Side-by-Side Comparison

How to Actually Decide Between Them

Here's the honest breakdown.

SourceDay is a good fit if your primary pain is on the PO side specifically: planners walking to your desk four times a day asking "is this shipping on time?" and you don't have a real answer. If you're running SAP or Epicor and need tight two-way ERP sync, and if you already have a sourcing process that works fine, SourceDay does what it promises. You do need to budget time for supplier onboarding; getting your supply base onto the platform takes months, not days.

Lumari fits better when the pain starts before the PO, or when it's spread across both sides. If your team runs dozens of RFQs a month and spends meaningful time collecting, comparing, and chasing quotes — that's work SourceDay doesn't touch, regardless of your supplier mix. If you want one system from sourcing through PO tracking instead of stitching three tools together, Lumari covers the full cycle. And because it runs through email, every supplier is in from day one without any onboarding, you're live in days, not months.

The supplier type question is real but it's not the main reason to pick Lumari. The bigger reason is that most procurement pain doesn't start at the PO. It starts at the RFQ. SourceDay doesn't help with that half of the job.

Can You Run Both Tools?

Some teams do. SourceDay for PO tracking on their top 50 suppliers (the ones willing to use the portal), Lumari for sourcing, RFQs, and the long tail of smaller suppliers. It's not ideal since two tools touching supplier communication creates overlap, but it works if SourceDay is already embedded in your ERP workflow and you don't want to rip it out.

Most teams we talk to prefer consolidating. One system, one data source, one place to check when a planner asks about a part. The fewer handoffs in your procurement workflow, the fewer places data falls through the cracks.

AI-Native vs AI-Added: Why It Matters for PO Tracking

SourceDay Intelligence predicts which PO lines will have problems based on historical patterns: price variances, lead time anomalies, delivery risk. That's useful for exception management.

But there's a difference between an AI layer added to a portal-based system and a system built AI-first from the ground up. Lumari was designed from day one to read unstructured supplier communication in any format, understand context, and take action. A supplier emails a delay notice with no subject line, in broken English, as a reply to a thread from three weeks ago? Lumari reads it, identifies the affected PO, updates the ERP, and flags it for the buyer. SourceDay's model requires that same supplier to log in and update a field.

That matters for PO tracking just as much as it matters for RFQs. The failure mode in PO management isn't that you don't know what's at risk in theory. It's that 30% of your supply base isn't in your tracking system and the other 70% updates their data days late. Lumari reads what your suppliers actually send, in real time, without requiring them to do anything differently.

Both tools do PO tracking. The question is whether your PO tracking is built on portals and forms, or on the email your suppliers are already using.

FAQ

Can SourceDay handle RFQs? No. SourceDay is a PO lifecycle tool. It doesn't do RFQ creation, quote collection, or quote comparison. That work happens outside the platform.

How long does SourceDay actually take to implement? The ERP integration itself takes a few weeks. The real timeline is supplier adoption. Getting 60-70% of your supply base actively using the portal or EDI typically takes 3-6 months, and that's if you're pushing hard. Lumari has no supplier onboarding phase, so teams go live in days, but the right comparison isn't which one launches faster, it's which one covers more of your supply base once it's running.

Does Lumari replace SourceDay completely? Yes. Lumari covers the full cycle and we build the ERP integration around your actual workflow, not a portal model. If you're already deep in a SourceDay rollout, we can talk through what migration looks like. But teams typically find Lumari covers everything SourceDay does plus everything SourceDay doesn't.

Is SourceDay worth it if I also need sourcing support? If sourcing is a real pain, you'd need to add a separate tool for RFQs and quote management. We've seen teams run SourceDay plus a sourcing tool plus a comparison spreadsheet. It works, but you're maintaining three things where one could cover the whole cycle.

Which one has better AI? Different problem, different AI. SourceDay Intelligence focuses on PO-specific predictions: delivery risk, price variance, lead time anomalies. Lumari's AI covers the full cycle and is built AI-native, reading supplier emails in any format across sourcing and PO stages, extracting data, taking action.

Your procurement workflow doesn't start when the PO hits the ERP. It starts with the first RFQ email, and everything between that email and the delivery receipt is where your team's time actually goes. Lumari handles the full cycle through email, so you're not stitching together a PO tool, a sourcing tool, and a prayer that your suppliers will log into a portal.