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check-if-email-exists CLI

Email verification from your terminal.




Note: The CLI binary doesn't connect to any backend, it checks the email directly from your computer.

Usage

Head to the releases page and download the binary for your platform.

Then run:

> $ check_if_email_exists --help
check-if-email-exists-cli 0.9.1
Check if an email address exists without sending any email.

USAGE:
    check_if_email_exists [OPTIONS] <TO_EMAIL>

ARGS:
    <TO_EMAIL>    The email to check

OPTIONS:
        --check-gravatar <CHECK_GRAVATAR>
            Whether to check if a gravatar image is existing for the given email [env:
            CHECK_GRAVATAR=] [default: false]

        --from-email <FROM_EMAIL>
            The email to use in the `MAIL FROM:` SMTP command [env: FROM_EMAIL=] [default:
            [email protected]]

        --gmail-verif-method <GMAIL_VERIF_METHOD>
            Select how to verify Gmail email addresses: Api or Smtp [env: GMAIL_VERIF_METHOD=]
            [default: Smtp]

    -h, --help
            Print help information

        --haveibeenpwned-api-key <HAVEIBEENPWNED_API_KEY>
            HaveIBeenPnwed API key, ignore if not provided [env: HAVEIBEENPWNED_API_KEY=]

        --hello-name <HELLO_NAME>
            The name to use in the `EHLO:` SMTP command [env: HELLO_NAME=] [default: gmail.com]

        --hotmail-verif-method <HOTMAIL_VERIF_METHOD>
            Select how to verify Hotmail email addresses: Api, Headless or Smtp [env:
            HOTMAIL_VERIF_METHOD=] [default: Headless]

        --proxy-host <PROXY_HOST>
            Use the specified SOCKS5 proxy host to perform email verification [env: PROXY_HOST=]

        --proxy-password <PROXY_PASSWORD>
            Username passed to the specified SOCKS5 proxy port to perform email verification. Only
            used when `--proxy-host` flag is set [env: PROXY_PASSWORD=]

        --proxy-port <PROXY_PORT>
            Use the specified SOCKS5 proxy port to perform email verification. Only used when
            `--proxy-host` flag is set [env: PROXY_PORT=] [default: 1080]

        --proxy-username <PROXY_USERNAME>
            Username passed to the specified SOCKS5 proxy port to perform email verification. Only
            used when `--proxy-host` flag is set [env: PROXY_USERNAME=]

        --smtp-port <SMTP_PORT>
            The port to use for the SMTP request [env: SMTP_PORT=] [default: 25]

    -V, --version
            Print version information

        --yahoo-verif-method <YAHOO_VERIF_METHOD>
            Select how to verify Yahoo email addresses: Api, Headless or Smtp [env:
            YAHOO_VERIF_METHOD=] [default: Headless]

💡 PRO TIP: To show debug logs when running the binary, run:

RUST_LOG=debug check_if_email_exists

Build From Source

First, install Rust; you'll need Rust 1.37.0 or later. Then, run the following commands:

# Download the code
$ git clone https://github.com/reacherhq/check-if-email-exists
$ cd check-if-email-exists

# Build in release mode
$ cargo build --release

# Run the binary
$ ./target/release/check_if_email_exists --help

Legacy Bash Script

The 1st version of this tool was a simple bash script that made a telnet call. If you would like to use that simpler version, have a look at the legacy branch. The reasons for porting the bash script to the current codebase are explained in issue #4.