Back in March 2020 the Posti allowlist was 32 countries, the rest were suspended. The list was gradually expanded with more countries (with 64 allowed countries

Back in March 2020 the Posti allowlist was 32 countries, the rest were suspended. The list was gradually expanded with more countries (with 64 allowed countries in Oct 2020), and the allowlist was replaced with a list of unreachable countries early this year. Currently (https://www.posti.fi/en/customer-support/sending/country-information/covid19-impacts-the-delivery-of-letters-and-parcels-sent-from-finland https://www.posti.fi/en/customer-support/sending/country-inf...) there are 20 unreachable countries due to COVID-19 (AU and NZ are not among them). Your experience with letters matches mine, they take 2 weeks to Europe regularly now.