Can you open lionmail.columbia.edu from mainland China?
No.
No recent testsVerdict from 2026-04-12 · 4 mo ago
As of the last test on 2026-04-12 — 4 mo ago — it was blocked in mainland China. We haven't tested it since, so this may have changed.
Access lionmail.columbia.edu with GreatFireVPN →Frequently asked questions
Is lionmail.columbia.edu blocked in mainland China right now?
We haven't tested lionmail.columbia.edu in the last 90 days. As of the last test on 2026-04-12 (4 mo ago), it was blocked in mainland China. Use the Test now button on this page for a fresh measurement.
Why is lionmail.columbia.edu blocked in mainland China?
As of the last test on 2026-04-12 — 4 mo ago — it was blocked in mainland China. We haven't tested it since, so this may have changed.
Since when has lionmail.columbia.edu been blocked?
GreatFire has recorded interference with lionmail.columbia.edu from mainland China since 2015-02-02.
How can I access lionmail.columbia.edu from mainland China?
You need a circumvention tool such as a VPN. GreatFireVPN, built by GreatFire, is designed to bypass the Great Firewall and reach sites like lionmail.columbia.edu.
http://lionmail.columbia.edu · JSON