You need an ETA for Mozambique if you have a Swiss passport
Visa options for Mozambique
Electronic travel authorization
Travellers need a travel authorization to visit Mozambique for Business or Tourism. Visa-exempt visitors entering Mozambique must obtain an Electronic Travel Authorization (eTA). Travellers can submit the eTA application online. Once the application is approved, travellers receive their eTA confirmation electronically. Travellers will then be required to pay MZN 650 (approximately USD 10) upon arrival. If travellers receive a new passport, they must apply for a new eTA.
This is not offered by sherpa°.
Apply on the government site.