How Fellstern switched to armincx with zero downtime and answers emails in under 24 hours

Written by: Johannes Mansbart CEO & Co-Founder, chatarmin.com

< 24 h

Email response time

0

Downtime during the switch

100%

Macros migrated

500+ brands whose customers get an answer, even on Sundays.

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The Fellstern story

Fellstern is a young brand in the pet space, selling mainly dog harnesses. The products need explaining, and customers ask about usage, details and individual features. On top of that, the audience skews a little older and looks closely before buying. Winning them over means replying fast while still going into detail for every single customer.

As Fellstern grew quickly, so did its email requests, multiplying within a short time. Longer delivery times early on added plenty of questions about parcels. Everything was answered by hand, straight from a regular Outlook inbox.

After Fellstern hit the limits of Zendesk when it came to automating recurring emails, the team researched solutions from the German-speaking market on its own and found armincx. Fellstern already knew Chatarmin from WhatsApp marketing.

"We wanted a hybrid system. Recurring emails run automatically, and we handle the tricky cases ourselves. That way we keep the personal contact with our customers and stay fully in control."

Luca Beese
Co-Founder

What changed

From pure manual work to a support setup that hands off the routine and keeps the expert advice.

before armincx

with armincx

Support as a founder job

The founders answered every email themselves. Every hour in the inbox was an hour missing from building the brand.

Standard questions on repeat

Questions about delivery times, parcel status and exchanges came in day after day. Every reply was written by hand.

An inbox running away

As Fellstern grew, the team could barely keep up. New emails arrived faster than they could be worked through.

Little room for complex cases

Between all the routine questions, there was hardly any time for complex requests. Yet that is exactly where the most care is needed.

How did Fellstern set up armincx?

Fellstern rolled out armincx without pausing day-to-day operations. Our team supported Fellstern from kickoff all the way to the first workflows.

Step 1: Kickoff

At kickoff, the goal was clear: a hybrid model where recurring emails run automatically and tricky cases stay with the team. Together, we defined which requests could be standardized and which systems needed to be connected. It quickly became clear that armincx covers every integration Fellstern needed and can send individual emails based on the DHL status.

Step 2: Migration during live operations

With Fellstern's email volume, a backlog builds up after just two or three days without processing. Pausing for the switch was not an option. The inbox and macros moved from Zendesk to armincx while operations kept running, and the team carried on without interruption. Because the macros came along, the familiar replies were ready from day one.

Step 3: Go-live with Shopify and DHL

For go-live, Fellstern connected Shopify and DHL. Since then, order data and the current shipment status sit right in every ticket. The support team works entirely in armincx and has everything it needs for a reply in one place.

Step 4: Define workflows

Next, Fellstern defined its first workflows. Whenever a customer asks about their parcel, the shipping workflow checks the DHL status and sends a different message depending on the case, with exactly the right information. The returns workflow distinguishes between exchanges and returns, a big advantage for a brand that sells sized products. Both cover several scenarios, so they were built step by step together with our team.

Step 5: Expand

The most important workflows are live. Now Fellstern is analyzing where recurring emails still come in and will automate further as the need arises. The principle stays the same: automate whatever can be standardized.

"The tool is simple and intuitive, so moving over from Zendesk was no problem. In two words: easy & innovative."

Luca Beese
Co-Founder

The results

< 24 h

Email response time

Fellstern now answers emails within 24 hours, even as volume keeps rising. The automations handle peaks with ease.

0

Downtime during the switch

For customers, support carried on as usual during the switch. Every request got an answer, even mid-transition.

100%

Macros migrated

Every text template from Zendesk is available in armincx too. That made for a stress-free switch with very little to relearn.

The strategy behind it

Four building blocks that let Fellstern combine automation with personal contact.

Smart ticket routing

Smart ticket routing

Fellstern draws a clear line between standard requests and expert advice. Workflows take over whatever can be standardized. Anything that needs advice goes to the support team, which stays in control of every tricky reply.

Direct system integration

Direct system integration

This is exactly where Zendesk hit its limits. In armincx, workflows access Shopify and DHL live. That's what turns macros into replies that go out automatically and still feel personal.

Fully automated workflows

Fully automated workflows

Around Christmas and public holidays, orders go up, and so do questions. Workflows absorb these peaks, and support stays reachable even in peak season.

Draft replies for sensitive topics

Draft replies for sensitive topics

Skeptical customers expect detailed, personal answers. For these cases, armincx prepares a draft reply that the support team refines and sends. Every answer stays personal and still gets written faster.

"Thanks to automation, we have a buffer every day that we never had before. Now we can give the trickier cases far more attention."

Luca Beese
Co-Founder

Your support, on autopilot.

armincx takes over the routine so your team can focus on what really matters.

Relieve the team, don't replace it

AI takes over the routine. Order status, tracking, returns, invoices, all fully automated. Your team has capacity for the cases that need judgment and empathy.

Respond instantly. Around the clock.

Customers get an answer in seconds, not hours. At night, on weekends, after a launch. The AI never sleeps, so your team finally can.

Continuous AI training

Agent feedback makes the AI better every day. What it gets wrong gets corrected. What it gets right gets reinforced.

From zero to live in a few weeks

From kickoff to hybrid model in four phases.

1

Phase 1

Kickoff

Define goals and recurring cases together.

2

Phase 2

Migration

Connect systems and transfer data.

Phase 3

Go-live

The team works entirely in armincx.

4

Phase 4

Workflows

Automate shipping and returns.

Ongoing

Expand

New workflows keep getting added.

Frequently asked questions

Everything you want to know about armincx at Fellstern.

Zendesk could not automate recurring emails the way Fellstern needed, mainly because of the DHL and Shopify integration. armincx covers both integrations and automatically sends a matching reply based on the DHL status.

Recurring shipping and return requests run through workflows. The support team handles complex cases and advice itself, so the personal contact with customers stays intact.

A shipping workflow that sends the right message based on the DHL shipment status, and a returns workflow that distinguishes between exchanges and returns. More workflows are added step by step.

The switch from Zendesk happened with zero downtime. All macros were migrated, and the team answered every email in armincx from day one.

Scale your support with armincx

Over 500 e-commerce brands use Chatarmin. With armincx, you automate your customer service and give your team the structure it needs.

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