Are paystubs available online? If so, you can send a screenshot.
If paycheck stubs are unavailable, you may be able to obtain an employment verification form from the SNAP office and submit it to your employer to complete. Or your SNAP caseworker may follow up about this in an interview or may request another form of income verification. For questions regarding how to document income if paystubs aren't available, you can call your state benefits hotline or your local SNAP office. Find your state hotline number or local office contact information here: https://www.fns.usda.gov/snap/state-directory