We confirmed that the Evangelical Church of India (ECI) is a real, long-established national denomination: it is an Episcopal Christian denomination in India that grew out of the work of the Oriental Missionary Society and reports more than 100,000 members, and is registered at the All India Conference level under the Societies Registration Act of 1860 at Lucknow, Uttar Pradesh (Wikipedia, IndianChristiansUnited). Its national headquarters is in Chennai, Tamil Nadu (ZoomInfo company listing, Facebook page "Evangelical Church of India"), and its congregations are spread across many states including Uttar Pradesh, the state in which Mirzapur lies, so a local ECI congregation there is plausible. The findings are summarized here for space; the full research was weighed in the review.
Our conclusion: The Evangelical Church of India is a genuine, long-established Episcopal denomination in India with national offices in Chennai and congregations across many states, including Uttar Pradesh, so a congregation in Mirzapur is entirely plausible. However, the signup gives only the denomination's national name with no local congregation name, address, website or social page, and our search found nothing identifying a specific ECI congregation in Mirz
We have asked this church for one piece of extra evidence: a photo, a link, its denomination, or a church that can vouch for it. The moment we can verify, this report is upgraded. Without a response, the listing is paused after 14 days.