Transmission by consular or diplomatic channels
Each Member State shall be free, in exceptional circumstances, to use consular or diplomatic channels to forward judicial documents, for the purpose of service, to those agencies of another Member State which are designated pursuant to Articles 2 or 3.
Service by diplomatic or consular agents
1. Each Member State shall be free to effect service of judicial documents on persons residing in another Member State, without application of any compulsion, directly through its diplomatic or consular agents.
2. Any Member State may make it known, in accordance with Article 23(1), that it is opposed to such service within its territory, unless the documents are to be served on nationals of the Member State in which the documents originate.
Service by postal services
Each Member State shall be free to effect service of judicial documents directly by postal services on persons residing in another Member State by registered letter with acknowledgement of receipt or equivalent.
Direct service
Any person interested in a judicial proceeding may effect service of judicial documents directly through the judicial officers, officials or other competent persons of the Member State addressed, where such direct service is permitted under the law of that Member State.
Source: EUR-Lex (Publications Office of the EU), © European Union, reuse permitted under Commission Decision 2011/833/EU.