N-400 - Applied 2 months ago, no mailed receipt notice

Below is my timeline, is that normal? I applied for N-400 ~2 months ago and my online account shows a receipt id/number. However there's no receipt document and I also haven't received one via mail.

Current status is January 30, 2026 Case Was Received and A Receipt Notice Was Sent.

USCIS Timeline

February 3, 2026

• Feb 04, 2026, 12:00 AM — N-400 IOEXXXXXXXXXX last updated
• Feb 04, 2026, 12:00 AM — N-400

February 1, 2026

• Feb 02, 2026, 11:00 AM — N-400 IAF event 👋

January 28, 2026

• Jan 29, 2026, 07:00 PM — N-400 IOEXXXXXXXXXX submitted