I QSL 100%. Direct or via Bureau. NO SASE required on direct QSLs. I prefer traditional QSLs but I also upload all my logbook entries to LoTW and eQSL. If you use eQSL I would appreciate it if you would upload your log to LoTW or followup with a physical QSL.
The image of the horsehead nebula shown on my QSL card is from a digital image a friend and I took from my backyard in 2003. I've dabbled with astrophotography.
Here are a few of the eQSL cards I've received
YS3/I2JIN (San Miguel, El Salvador)
OM8A (Eastern Slovakia)