@Tutanota I can recommend Koofr. They're from Slovenia, open source and end to end encrypted. They offer a free plan to begin with. A F Droid Client is also there ☺️
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Miggi
@miggi@metalhead.club
Piero Bosio Social Web Site Personale 
Social Forum federato con il resto del mondo. Non contano le istanze, contano le persone
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