Infact
76 / 100
Mostly True Susami Bay

The text states that the world's deepest mailbox is located in Susami Bay, Japan, and is 10 metres underwater.

Infact verdict: Mostly True (76/100).

Both claims about the world's deepest mailbox being located in Susami Bay, Japan, and being 10 meters underwater are well-documented facts. The underwater mailbox in Susami Bay is a known tourist attraction and has been recognized by the Guinness World Records. Despite the lack of external evidence in this instance, these claims align with widely accepted information.

July 22, 2026 Language: en 2 claims analyzed
How is this score determined? →

Individual claims

76
Mostly True Geography
The world's deepest mailbox is located in Susami Bay, Japan.
The claim that the world's deepest mailbox is located in Susami Bay, Japan, is a well-known fact. It is recognized by the Guinness World Records and is a popular tourist attraction. Despite the absence of external evidence in this instance, the claim aligns with widely accepted information.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score None
Web Consensus Weight 0
Source Quality Score None
Source Quality Weight 0
Llm Reasoning Score 85
Llm Reasoning Weight 100
Llm Reasoning Score Raw 85
Weighted Total 76
Evidence Summary No external evidence found, but claim is well-documented.
76
Mostly True Geography
The mailbox is specifically 10 metres underwater.
The claim that the mailbox is 10 meters underwater is consistent with widely known information about the Susami Bay mailbox. It is a recognized fact and part of the attraction's description.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score None
Web Consensus Weight 0
Source Quality Score None
Source Quality Weight 0
Llm Reasoning Score 85
Llm Reasoning Weight 100
Llm Reasoning Score Raw 85
Weighted Total 76
Evidence Summary No external evidence found, but claim is well-documented.

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