smtp is_deliverable is always false

Author: paramakoCreated Jan 29, 2024Updated Feb 9, 2026

why can smtp.is_deliverable field always be set to false? even for my own mail

smtp response always look like this

rust

smtp: Ok(
            SmtpDetails {
                can_connect_smtp: true,
                has_full_inbox: false,
                is_catch_all: false,
                is_deliverable: false,
                is_disabled: false,
            },
        ),

Source: reacherhq/check-if-email-exists

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