Screenshot from Tusky showing options ranging from Public to Direct that restrict post audience, including Followers Only.
https://files.mastodon.social/media_attachments/files/110/312/641/134/098/593/original/c26b5048303557f1.jpg
@Pineywoozle @atomicpoet @CStamp Tusky has the below options. Most apps do have options for limiting to followers only, but you need a largish following for that to be optimal, engagement-wise.
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