Smisto terms of use
These terms apply when you install or use Smisto, the email companion for Windows. They are short on purpose. By installing or using Smisto you accept them; if you do not accept them, please do not use Smisto.
Who provides Smisto
Smisto is made and provided by Edoardo Maria Crescenti, Switzerland ("we"). Smisto's home on the web is smisto.ch.
Your permission to use Smisto
Smisto is proprietary software. Its source code may be visible for review, but seeing it gives you no rights to it.
If you got Smisto from smisto.ch or another channel we provide, you may install it and use it on computers you own or control, for personal or work purposes. That permission is personal to you; it is not a sale and you cannot transfer it.
You may not, unless we agree in writing or the law expressly allows it:
- copy, modify, translate or create works based on Smisto;
- publish, distribute, rent, sublicense or sell Smisto or any part of it;
- remove or change copyright notices;
- use Smisto in a way that breaks the law or other people's rights.
Third-party components in Smisto remain under their own licences. They are listed in the app under Settings, About Smisto, Acknowledgements.
Your mail and your accounts
Smisto works on your own computer with the mail accounts you connect. You remain responsible for those accounts, for what you send, and for following your mail provider's terms. We do not run a Smisto server and cannot see, recover or restore your mail.
AI features
AI features are off until you switch them on. If you use a cloud AI service such as OpenRouter, that service and the model provider you pick process the parts of your mail that the feature needs, under their own terms and with your own API key. AI suggestions can be wrong. Check them before you rely on them; nothing is filed, saved or sent until you click.
Privacy
How Smisto handles personal data is described in the privacy notice.
Updates
We may release updates that change, add or remove features. These terms apply to updates too, unless an update comes with new terms.
No warranty
Smisto is provided "as is", without any warranty, express or implied, including fitness for a particular purpose and freedom from errors. Keep your own copies of anything important; your mail provider keeps the original of your mail.
Liability
To the extent the law allows, we are not liable for any damage arising from the use of Smisto or from being unable to use it, including lost data, lost profit or indirect damage. This does not limit liability where the law does not allow it to be limited, in particular for intent or gross negligence.
Changes to these terms
We may change these terms. The current version is always at smisto.ch/terms. If you keep using Smisto after a change, the new terms apply.
Law and courts
These terms are governed by Swiss law, excluding its conflict-of-law rules and the UN Convention on Contracts for the International Sale of Goods. The courts at the provider's place of residence in Switzerland have jurisdiction, unless mandatory law, such as consumer protection law, gives you the right to go to court where you live.
Language
These terms are written in English. Translations are provided for convenience; if they differ, the English version applies.
Contact
See the support page for how to reach us.
Last updated: November 2026.