You need Standard Contractual Clauses (SCCs) only if you transfer personal data from the EU to a country without an adequacy decision, which in email marketing usually means using a US-based provider. If your provider hosts data inside the EU or in an adequate country such as Switzerland, you do not need SCCs at all.
When SCCs are required
Under the GDPR, sending EU personal data to a "third country" needs a legal transfer mechanism. SCCs are the most common one, and US-based email platforms rely on them to process EU subscriber data. After the Schrems II ruling, SCCs alone are often not enough: you may also need supplementary measures and a case-by-case transfer risk assessment, because the destination country's laws (such as the US CLOUD Act) still apply.
The simplest way to handle SCCs is to not need them. See our guide to the best GDPR-compliant email marketing software.
How to avoid SCCs entirely
Keep your data in the EU or in a country with an EU adequacy decision. Switzerland holds adequacy, so EU-to-Swiss transfers need no SCCs and no supplementary measures. Mailpro is Swiss-hosted, with customer data in Geneva, so there is nothing extra to sign or assess. If you are weighing providers, see our FAQ on whether your email data is subject to US law and our guide to GDPR and companies outside Europe.
Mailpro and GDPR
Compliance without the transfer paperwork
Mailpro hosts your data in Switzerland under an EU adequacy decision, so you skip Standard Contractual Clauses and Schrems II risk entirely.