I'm going to re-comment this from a few years ago. This works a treat any emails that go into your spam get marked as not spam automatically and go into your inbox.
Look at the top right of Proton Mail and you'll see Settings, click that go to settings and Filters on the left-hand side, under Custom filters click Add sieve filter, name it "spam->inbox" then copy and paste this into the box below, additionally you can turn it on and off if you want to turn it off temporarily etc..
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I'm going to re-comment this from a few years ago. This works a treat any emails that go into your spam get marked as not spam automatically and go into your inbox.
Look at the top right of Proton Mail and you'll see Settings, click that go to settings and Filters on the left-hand side, under Custom filters click Add sieve filter, name it "spam->inbox" then copy and paste this into the box below, additionally you can turn it on and off if you want to turn it off temporarily etc..
require ["include", "environment", "variables", "relational", "comparator-i;ascii-numeric", "spamtest", "fileinto"];
if allof (environment :matches "vnd.proton.spam-threshold" "*",
spamtest :value "ge" :comparator "i;ascii-numeric" "${1}")
{
fileinto "Inbox";
}