Can you open smtp.zoho.com from mainland China?
Not sure yet.
There isn't enough recent data to reach a verdict.
2016first tested
4 mo agolast tested
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Other tested URLs on zoho.com
Blocking varies across zoho.com: 1 blocked vs 35 accessible among tested hosts.
http://zoho.comNot blockedhttps://zoho.comas of 2026Not blockedhttp://mx.zoho.comNot enough datahttp://www.zoho.comas of 2026Not blockedhttp://one.zoho.comas of 2026Not blockedhttp://mail.zoho.comNot blockedhttps://www.zoho.comas of 2026Not blockedhttp://docs.zoho.comas of 2026Intermittenthttp://imap.zoho.comNot enough datahttps://crm.zoho.comas of 2026Not blockedhttps://mail.zoho.comNot blockedhttps://docs.zoho.comIntermittenthttps://imap.zoho.comNot enough datahttp://writer.zoho.comas of 2026Blockedhttp://imappro.zoho.comNot enough datahttp://projects.zoho.comNot blockedhttps://mail.zoho.com/zmas of 2026Not blockedhttps://salesiq.zoho.comas of 2026Not blockedhttp://calendar.zoho.comNot blockedhttps://www.zoho.com/docsNot blockedhttps://www.zoho.com/mailNot blockedhttps://www.zoho.com/deskas of 2026Not blockedhttps://calendar.zoho.comas of 2026Not blockedhttps://home.zoho.com/homeas of 2026Not blockedhttps://workdrive.zoho.comNot blockedhttps://www.zoho.com/mail/as of 2026Not blockedhttps://www.zoho.com/surveyNot blockedhttps://www.zoho.com/writeras of 2026Not blockedhttps://www.zoho.com/creatoras of 2026Not blockedhttps://www.zoho.com/calendaras of 2026Not blockedhttps://www.zoho.com/workdriveNot blockedhttps://www.zoho.com/login.htmlas of 2026Not blockedhttps://www.zoho.com/zh-hant/mailas of 2026Not blockedhttps://meetinglab.zoho.com/assistNot blockedhttps://www.zoho.com/docs/login.htmlNot blockedhttps://www.zoho.com/mail/login.htmlas of 2026Not blockedhttps://www.zoho.com/docs/sheet.htmlas of 2026Not blockedhttps://www.zoho.com/forms/create.htmlas of 2026Not blockedhttps://www.zoho.com:80/crm/lp/login.htmlNot enough datahttps://www.zoho.com/projects/?src=zforumsNot blockedhttps://www.zoho.com/docs/online-spreadsheet.htmlNot blockedhttps://www.zoho.com/news/zoho-extends-chinese-partnership.htmlas of 2026Not blockedhttps://docs.zoho.com/file/tp1p244b32c676c544a53a1026ca3324ae0dcas of 2026Intermittenthttps://docs.zoho.com/file/2mik6ab34683fe6654f48abce1165ac45bdb4Intermittenthttps://docs.zoho.com/file/jpc3m5955ad35373740e5ba77836d75ab0c63as of 2026Intermittenthttps://www.zoho.com/forms/templates/education-forms/course-applicationas of 2026Not blockedhttps://docs.zoho.com/sheet/ropen.do?rid=8r1v7d7a9f4f3e6d946d8bc86dfe9cf2b9a3bas of 2026IntermittentEach verdict covers the last 90 days of tests, as on that URL's own page.
Frequently asked questions
Is smtp.zoho.com blocked in mainland China right now?
As of the last test on 2026-03-31, smtp.zoho.com is not enough data in mainland China, based on GreatFire's live Great Firewall measurements.
http://smtp.zoho.com · JSON