Digital Approval Workflows for Packaging Planning: How to Replace the Email Chain for Good

Why an email chain is not an approval workflow

Email is a means of communication, but it is not a reliable system for packaging approvals. An email can distribute a draft, but it does not clearly answer key process questions: Which version is current? Who still needs to review it? Has a print run been completed? Which packing instructions apply at Plant A, and which at the supplier’s facility? As soon as CAD files, container data, material specifications, cost estimates, and feedback from multiple departments come together, a situation with multiple versions of the same document can easily arise.

The problem therefore lies less in the volume of messages than in the lack of status control. An attachment named “final_v7_new” can be forwarded without any technical changes, even though a correction has already been approved. Responses can be taken out of context, responsible personnel and email distribution lists change, and approvals are not clearly tied to the exact, verified data status. Operationally, this risks follow-up inquiries, delayed production starts, or the use of outdated packing instructions. At the same time, the effort required for quality management and audits to reconstruct the decision-making process at that time increases.

What a digital approval workflow must truly achieve

A digital approval workflow is valuable when it provides structured support and documentation for the technical development of the packaging concept from the outset. The starting point is reliable CAD component data and clearly defined packaging requirements. Based on this, the creator first develops one or more packaging concepts and compares them with one another. This results in a concrete work product that does not yet go directly into the approval process but is first reviewed by a specialist.

The initial step thus focuses on the actual concept development. Alternative solutions—such as on a pallet, in a reusable container, or in a carton—are simulated and evaluated in terms of fit, protective effect, empty space, weight, material usage, and logistical suitability. Obvious weaknesses—such as unnecessary empty space, excess weight, insufficient component protection, awkward handling, or inefficient use of materials—are identified and corrected by the creator during this phase. This prevents half-baked proposals from being submitted for review too early and ensures that the approval process does not become a substitute for technical development work.

Only once the packaging proposal is technically sound and any identifiable problems have been corrected is the concept shared with the relevant stakeholders via a secure web link. All participants then have access to the same up-to-date data and the same version to be approved. As a result, internal and external reviewers discuss the same component, the same constraints, and the same packaging concept, rather than relying on screenshots, local files, or attachments that may be interpreted differently.

Comments, questions, and change requests are recorded directly on the packaging concept to be approved. If further adjustments are necessary, the workflow guides the process back to simulation and revision in a controlled manner. Once all requirements are met, the exact, reviewed version is approved. This closed-loop process is the core of a robust approval workflow: concept development, internal preliminary review, review, modification, and decision-making remain traceably linked.

From CAD Model to Approval: The Workflow in Six Steps

Step 1: Use the Component’s CAD Data as the Technical Basis

The workflow begins with the existing CAD data for the component. This data serves as the technical starting point for packaging planning. Based on the component’s geometry, dimensions, and other relevant parameters—such as weight, quantity, material, protection requirements, and logistical constraints—the packaging solution can be digitally designed.

Step 2: Simulate and compare packaging options

Based on the CAD data, various packaging options are developed and simulated. Depending on the specific requirements, it is possible to determine how many components fit into a particular container, which container is suitable for a given quantity, which multi-level packaging strategy is most appropriate, or how packaging units can be arranged on a pallet. In doing so, different containers, packing methods, protective materials, and packaging hierarchies can be compared with one another. The simulation reveals which solution makes the most sense in terms of fit, capacity utilization, weight, empty space, material usage, handling, and logistical suitability.

Step 3: Resolve Identified Packaging Issues Before the Review

The simulation serves not only for visualization but also for a preliminary technical review. The designer identifies obvious weaknesses and corrects them before the concept is shared with other stakeholders. Typical problems include unnecessary empty space, excess weight, poor volume utilization, insufficient component protection, unsuitable container sizes, or a solution that is impractical for transport, storage, or handling. Adjustments to packing density, layout, container selection, packaging method, or protective material are simulated and evaluated again. This transforms an initial draft into a verifiable packaging proposal.

Step 4: Share the packaging proposal via a secure web link

Only once the packaging proposal has been technically reviewed, validated, and sufficiently refined is it shared with the relevant stakeholders. This eliminates the need to send a draft via email or to share a separate file, screenshot, or local copy. Instead, the current proposal is made available via a secure web link, serving as a central single source of truth. All participants access the same data, review the same version, and provide comments directly on the packaging concept to be approved. This reduces misunderstandings, prevents version conflicts, and facilitates collaboration between internal and external reviewers.

Step 5: Stakeholders review and comment on the proposal

In the next step, the involved departments review the packaging proposal from their respective perspectives. These may include packaging planning, logistics, quality, production, purchasing, occupational safety, sustainability, customers, or suppliers. Comments, questions, and requests for changes are recorded directly on the shared proposal. This avoids a confusing email coordination process and instead creates a traceable review process based on a central set of data.

Step 6: Approve the packaging concept or revise it as needed

Once all requirements have been met and outstanding issues resolved, the packaging concept is approved. The approval applies to a clearly identifiable version and provides a traceable record of who reviewed the proposal and when the decision was made. This transforms the reviewed concept into a binding version for packing instructions, operational implementation, and subsequent processes.

If changes are still required during the review, the concept is not informally modified but is systematically returned for revision. The feedback is incorporated, the packaging solution is adjusted, simulated again, and then resubmitted for review. This ensures that the entire process remains traceable: from the initial draft through corrections and re-evaluation to final approval.

Figure 1: A 6-step workflow from CAD design to approval of the packaging concept.

It is precisely this feedback loop that distinguishes a simple digital file exchange via email from a true workflow with a single source of truth. The process is intentionally kept simple: create, simulate, improve, share, review, and approve. Complexity arises only where it is technically necessary. This allows even larger organizations to define clear lines of responsibility without overburdening the actual packaging development process with additional administrative steps.

Separate audit trails, document control, and electronic signatures

Three terms are often confused in digital approval processes: document control, audit trail, and electronic approval. Document control ensures that an approved packaging version is unambiguously available, protected, and clearly identifiable by its status. An audit trail documents the relevant events along the workflow, such as creation, simulation results, comments, revisions, approval, and publication. An electronic approval or signature, on the other hand, serves to attribute a decision to a specific person and make it traceable.

For internal packaging approvals, a complex signature solution does not necessarily have to be the primary focus. It is often more important that it is clearly identifiable who was logged into the system, what role that person had, which version was reviewed, and what decision was made. An authenticated approval within the platform may be sufficient from an organizational standpoint, provided it is appropriate for the respective process, document type, and risk level.

For the audit trail, quality matters more than the volume of data. At a minimum, the following should be logged: project ID, version, user, role, timestamp, action, and old and new statuses. The correction loop is particularly important: It must remain traceable which feedback triggered a revision, what new status resulted from it, and to which version the subsequent approval refers. Reasons for changes, conditions, and comments should be documented in a comprehensible manner.

Additionally, access rights, retention periods, export options, and protection against undetected manipulation should be included in the technical concept. ISO 10013:2021 provides helpful guidelines for handling documented information and also takes into account digital media, protective measures, and automated process flows. In more heavily regulated industries, additional requirements may apply, such as those regarding access permissions, system validation, traceability, or electronic records.

PPWR Increases the Value of Reliable Packaging Documentation

The EU Packaging and Packaging Waste Regulation (PPWR) entered into force on February 11, 2025, and has generally been in effect since August 12, 2026. For manufacturers, it requires, among other things, conformity assessment, technical documentation, and an EU declaration of conformity for the relevant requirements. The regulation specifies retention periods of five years for technical documentation and declarations for single-use packaging and ten years for reusable packaging. Suppliers must provide the necessary information and documents in paper or electronic form.

A digital approval workflow does not guarantee PPWR compliance. However, it can significantly support the process discipline required for compliance. This is particularly relevant because the PPWR explicitly cites modeling and simulations (Regulation (EU) 2025/40, Article 10, Paragraph 4(c)) as possible sources for technical documentation when assessing packaging minimization. A structured workflow can thus link simulation results, identified optimization potential, decisions, and the final approved packaging version. To do this, it must be clearly defined which product, which packaging component, which packaging stage, and which supplier are affected, and which changes trigger a re-evaluation. The source and effective date of a document should be recorded, as should its approval status.

How to Make the Transition Without a “Big Bang”

Step 1: Select a Specific Pilot Case

A medium-sized company should not immediately overhaul all its packaging processes but should start with a clearly defined pilot case. A suitable example is a control unit that is regularly shipped to an automotive OEM and for which CAD data, unit quantities, packaging requirements, and initial findings from previous packaging trials are already available.

Step 2: Document the Current Manual Process

First, document how the current workflow operates. This includes, for example, who conducts the initial packaging trial, which containers are tested, how photos and packaging information are created, and to whom the documentation is emailed. For a control unit, the current workflow might look like this: The packaging planning team tests a KLT container, takes photos of the component inside the container, adds notes on ESD protection, and emails everything to Quality, Logistics, Purchasing, and Production.

Step 3: Identify typical pain points

Next, the company should honestly identify where the manual process causes problems. Typical weak points include unclear file versions, conflicting feedback, missing documentation, late objections from Quality Assurance, or rework shortly before the start of series production. In the case of the control unit, for example, it may become apparent that component protection for plug-in contacts is discussed too late, or that different people are working with different images and packing lists.

Step 4: Provide CAD Data and Packaging Requirements

In the digital process, the control unit’s CAD data forms the technical foundation. In addition, the relevant requirements are documented, such as quantity per shipment, component weight, sensitive contact surfaces, ESD requirements, permissible container weight, desired container type, and OEM requirements. This creates a solid starting point for packaging development.

Step 5: Digitally Simulate Initial Packaging Concepts

Next, various packaging concepts are digitally evaluated. For the control unit, for example, a KLT with compartments, a cardboard box with an insert, or a palletized reusable packaging solution can be compared. The simulation shows how many control units fit into each container, which orientation is most suitable, how well the available space is utilized, and whether weight, handling, protection, and stackability are generally feasible.

Step 6: Resolve Obvious Issues Before Coordination

Before involving other stakeholders, the designer reviews the packaging concept independently. If there is too much empty space, the connectors are not sufficiently protected, the gross weight is too high, or the packaging is difficult to stack, the concept is revised immediately. The goal is to ensure that Quality, Logistics, and Production do not have to review an immature design but instead receive a robust proposal.

Step 7: Share the review-ready proposal centrally

Only once a sound packaging proposal is available is it shared with the relevant stakeholders. Instead of email attachments, screenshots, and local copies, a secure web link is used. This ensures that all stakeholders see the same version of the packaging concept and review the same version. This is particularly helpful when an external packaging supplier or a customer is involved in addition to internal departments.

Step 8: Collect comments directly on the packaging concept

The participating departments provide their feedback directly on the digital proposal. For example, quality assurance may request additional protection for plug-in connectors, logistics may suggest better pallet utilization, and production may provide feedback on removing the control units at the assembly station. This ensures that all comments remain attached to the packaging concept and are not lost in various email threads.

Step 9: Implement changes in a controlled manner

If changes are necessary, the concept is revised as needed and simulated again. For the control unit, this might mean, for example, selecting a different compartment, adding additional ESD protection, or adjusting the number of parts per container. The new version is then made available for review again. This creates a traceable correction loop instead of a confusing coordination process involving multiple file versions.

Step 10: Document the Approved Version Bindingly

Once all requirements are met, the final packaging version is approved. The approval refers to a uniquely identifiable version and documents who reviewed the proposal and when the decision was made. The approved packaging concept is then used to create the binding packing instructions for warehousing, production, shipping, and other downstream processes.

Step 11: Evaluate the pilot and roll it out incrementally

After a few real-world runs, the company should evaluate the new process. Key questions include: Did coordination become faster, were there fewer follow-up inquiries, were fewer manual packing trials required, and were the approvals more traceable? If the pilot works with the control unit, the digital workflow can be gradually extended to other component families, such as sensors, control unit variants, housings, mounts, or electronic assemblies.

Selecting Software for Industrial Packaging Workflows

When selecting software, domain expertise, industry-ready process logic, and a seamless workflow are just as important as the sheer range of features. A suitable system should be designed to realistically model industrial packaging and use CAD data of the component as a starting point. It must be possible to evaluate different packaging concepts in a comparable manner, for example, in terms of space utilization, weight, protection, handling, and suitability for storage and transport. Identified weaknesses should not be addressed outside the system but should be systematically incorporated into the revision of the packaging concept. The verifiable version should then be made available via controlled web access so that all stakeholders review the same version. Comments, questions, and decisions remain directly linked to the packaging proposal. If changes are necessary, a new, traceable version is created without losing the previous history. Only then does digital collaboration become a robust and efficient approval process for industrial packaging concepts.

Specialized platforms have an advantage here when packaging development, evaluation, costing, coordination, and documentation are not treated as separate, individual steps. Pakera follows precisely this approach by developing, evaluating, sharing, reviewing, versioning, and approving packaging concepts through a digital process. A product demo should therefore not be based on an abstract sample dataset, but rather on a specific component and a specific use case.

Conclusion: Email informs: Pakera manages the packaging process

A modern approval process for packaging concepts can no longer depend on whether the right file is found in the right email thread. Especially in industrial packaging, decisions are based on many details: CAD data, container selection, packing method, component protection, capacity utilization, weight, void space, handling, storability, transportability, and feedback from multiple departments. If this information is distributed via emails, screenshots, Excel lists, PowerPoint presentations, and local PDF versions, it’s easy to lose track of the big picture. This leads to duplicate coordination efforts, unclear version statuses, and decisions that are difficult to reconstruct later.

Pakera solves exactly this problem by mapping the entire process—from the CAD model to the approved packaging concept—within a digital workflow. Packaging options are not only documented but also developed, simulated, compared, and evaluated. Obvious weaknesses—such as empty space, excess weight, poor space utilization, or insufficient component protection—are identified early on and specifically revised before the review. Only the version ready for review is shared with the relevant stakeholders via a secure web link.

This creates a central, single source of truth for the packaging concept. Logistics, quality, production, purchasing, packaging planning, customers, and suppliers review the same version and provide feedback directly on the proposal. If changes are necessary, this does not result in a new email thread with additional attachments, but rather in a controlled revision process with traceable versioning. The final approval applies specifically to the reviewed version and forms the basis for packing instructions, implementation, and subsequent traceability.

While email remains a useful channel for information, it is no longer necessary for the actual coordination of the packaging concept. Technical evaluations, comments, inquiries, correction cycles, and documentation are all linked directly to the respective packaging proposal. This is precisely where Pakera’s practical value lies. Less manual coordination, earlier involvement of relevant stakeholders, faster processes, less version chaos, and better packaging decisions. The result is an approval process that is not only digital but also aligns with the actual workflow of industrial packaging development.

Explore Pakera’s approval solutions

Packaging Approval Workflow

Packaging Report & Documentation

Digital Pallet & Container Optimization

Packaging Compliance

Packaging Material Planning

Solutions for Efficient PPWR Documentation

Sources:

Regulation (EU) 2025/40 on packaging and packaging waste. Europäisches Parlament und Rat, 19. Dezember 2024. https://eur-lex.europa.eu/eli/reg/2025/40/oj

Guidance document for Regulation (EU) 2025/40 on packaging and packaging waste, C/2026/3084. Europäische Kommission, 10. Juni 2026. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=OJ:C_202603084

ISO 10013:2021 – Quality management systems — Guidance for documented information. International Organization for Standardization, März 2021. https://www.iso.org/standard/75736.html

Release of ISO 10013:2021, Quality management systems – Guidance for documented information. ISO/TC 176, 17. Februar 2021. https://committee.iso.org/sites/tc176/home/news/content-left-area/news-and-updates/release-of-iso-100132021-quality.html

GS1 Package and Product Measurement Standard. GS1. https://www.gs1.org/standards/gs1-package-and-product-measurement-standard/10

Regulation (EU) No 910/2014 on electronic identification and trust services, Article 25. Europäisches Parlament und Rat, 23. Juli 2014. https://eur-lex.europa.eu/legal-content/DE-EN/TXT/?uri=CELEX:32014R0910

Business Process Model and Notation (BPMN), Version 2.0.2. Object Management Group, Januar 2014. https://www.omg.org/spec/BPMN/2.0.2/