Digital letters that respond to you
Create, send, respond to, and track digital business reply labels.
Pay-per-ship without setup, no minimum order
Create, send, respond, evaluate – in one process.
ePost Studio
With ePost Studio, business customers can create, send, and track iLetters (Digital Business Reply Labels) from a single system. Composer, templates, brand kits, logic editor, and analytics all in one place.
iLetter
What recipients receive: a personalized, interactive letter in the digital inbox – opened in the Swiss Post-App on the smartphone.
ePost Studio is worth it
A platform
Instead of four separate systems, everything in one place. You save on licenses, interfaces, and training costs.
Reach without own accounts
Over a million verified recipients in Switzerland – without you having to manage your own platforms or apps.
Pay-per-ship without lock-in
No setup, no minimum purchase, no lock-in.
Easy to connect
Data, APIs and services are compatible with your existing systems.
Shipping from CHF 0.40 – it pays off!
Send an iLetter (digital Business reply label) from CHF 0.40 per piece excl. VAT. This is how cost optimization and sustainability work.
In four steps from idea to insight
Create interactive and informative letters
From the classic letter with logo and text to the multi-page letter with questions, uploads and branches. Building blocks, data and logic are combined in the ePost Studio - without programming, with live preview from the recipient’s perspective.
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Building blocks Data Logic AI integration Branding Templates |
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Send directly from ePost Studio or via API
Send manually from ePost Studio or automatically from the business application. Delivery via the ePost infrastructure to the digital inbox in the Post App.
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Your customers respond directly in the Swiss Post-App
Receive, open, fill out, send – all in the Swiss Post-App. No printing, no mailing, no back-and-forth e-mails – everything happens in one place.
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Get answers in ePost Studio or optionally in your third-party system
With personalized sending, you can see who has responded or is still pending. With anonymous sending, answers are only evaluated in aggregate. Answers land in the dashboard in ePost Studio. Optionally, the structured data flows via defined endpoints into the third-party system.
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Two shipping logics. Eight typical applications.
single shipment
Damage claim
Insurance, with pre-filled policy data
Citizen request
Authority, with uploaded ID proof
Contract renewal
Bank or insurance, with confirmation and delivery proof
Onboarding
HR, bank or membership, with captured master data
bulk mail
Product feedback
Retail, post-delivery
Member survey
Association, majority opinion
Employee survey
HR, climate or engagement
Market research
SMEs, customer satisfaction
Only pay for what you actually use!
*Prices exclude VAT
Pilot for your business – Try ePost Studio now
We would be happy to show you in a non-binding conversation how ePost Studio can be integrated into your specialist solution in a legally compliant and recipient-oriented manner.
Data protection guaranteed
Secure in Switzerland
Data stays in Swiss data centers – locally and reliably protected.
GDPR compliant
Encrypted
Frequently asked questions
All data is stored and processed exclusively in Swiss data centers – under the highest security standards.
Anyone who has the Swiss Post-App will see the iLetter directly under “My digital mail” in the digital inbox. Over a million people in Switzerland already use the inbox.
Individual recipients who do not have the Swiss Post-App: They receive an e-mail with an encrypted one-time link. They can then use this link to access the iLetter, enter their answers and send them back encrypted. This way, you can also reach people who do not have the app – without any media breaks.
No. You can create and send iLetters completely without integration. Build your iLetter in the ePost Studio, send it manually and evaluate the success of your mailings in the dashboard. If you want to send structured data back to your CRM or claims system, we offer the “iLetter + System Integration” package with standard connectors without an integration project.
Yes. In anonymous mass mailings (e.g. member or employee surveys), answers are evaluated exclusively in aggregate form. This means that no individual recipients can be traced. This makes iLetter GDPR-compliant even for sensitive surveys.
The iLetter is an intelligent, interactive, integrated and intuitive digital letter.


