Can't get `IMailFolder.MessagesArrived` event anymore

[astrohart]

See the image above. I am using 2.0.6 of MailKit - here is my packages.config, same as you.

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="BouncyCastle" version="1.8.3.1" targetFramework="net461" />
  <package id="MailKit" version="2.0.6" targetFramework="net461" />
  <package id="MimeKit" version="2.0.6" targetFramework="net461" />
</packages>

Is there a lower version of the NuGet package we still must utilize?