I am not seeing any mentions of this idea yet, and I think it belongs on Textra. Its always so nice when apps allow you to Scroll-Select of whatever items are within (photos, emails, notes, etc.). There's an API that allows for long press an item and drag up/down/sideways to select the adjacent items. In other words, you continue holding down and selecting additional messages.

You can typically do this in your default Samsung apps including your Email, Gallery, Notes, and in plenty of 3rd party apps as well.

Should be a simple add-on feature, and very useful. Hate having to go one by one even though I have appreciation for all the new(er) features such as Select All, Calendar Dates, and etc.

Ohhh maybe even allow for selecting messages from calendar dates. This is also another feature that's available in the default Android/Samsung photo Gallery app.

Message To Developers:
https://stackoverflow.com/questions/52550721/how-to-implement-hold-and-drag-feature-for-multi-selection