On June 15, 2019, Grand Master Brother Michael Mattes, representing the Grand Lodge of Greece, participated in the Annual Communication of the Grand Lodge of Russia held in St. Petersburg.
Delegations from the following Grand Lodges attended the proceedings:
- H. Oscar De Alfonso Ortega, Grand Master of the Grand Lodge of Spain
- H.E. Jean-Pierre Rollet, Grand Master of the Grand National Lodge of France
- H.E. Christoph Bosbach, Grand Master of the United Grand Lodge of Germany
- Ad. Andreas Charalambous, Grand Master of the Grand Lodge of Cyprus
- Ad. Slave Naumovski, Grand Master of the Grand Lodge of North Macedonia
- Ad. Lurie Sedletchi, Grand Master of the Grand Lodge of Moldova
- Ad. Iskren Yotov, Grand Master of the United Grand Lodge of Bulgaria
- H.E. Marko Bitenc, Grand Master of the Grand Lodge of Slovenia
- Lukas Rasulic, Grand Master of the Regular Grand Lodge of Serbia
- M. Berik Zhubaniyazov, Grand Master of the Grand Lodge of Kazakhstan
- Archil Ebralidze, Grand Master of the United Grand Lodge of Georgia
- Ad Johann Strnat, Adds the Great Master of the Grand Lodge of Austria
- Antal Zoinai, First Deputy Grand Master of the Symbolic Grand Lodge of Hungary
- Ad Mert Unsal, Add. Grand Master of the Grand Lodge of Azerbaijan
- Ad Even Tudeberg, Grand Adept of the Grand Lodge of Hestonia
- Ad Mao-Kuang Wang, Grand Master of the Grand Lodge of China
- Andrei Ceccoli, Grand Angel of the Grand Lodge of San Marino
- Ad Linas Sologubas, Grand Master of the Grand Lodge of Lithuania
- Ad Ali Akbudak , Grand Lodge of the Grand Lodge of Turkey
- Ad Emanuele Melani, member of the Grand Council of the Grand Orient of Italy
- Ad Thomas Jackson, former Grand Master of the Grand Lodge of Pennsylvania
- Ad George Florea , District Grand Master of the National Grand Lodge of Romania
- Ad Andrejs Cinis , of the Grand Lodge of Latvia
- George Albantov , of the Grand Lodge of the State of Washington
- Antoine Vella , from the Grand Lodge of Malta
- Joell Evasox , ex. of the Grand Lodge of the Philippines
