邮件发件人信息 Email Sender Info 作者： 박정섭

Open your inbox and all you see is a list of sender names. Which emails are from companies? Which are personal? Which are official government notices? It's hard to tell at a glance.

Email Sender Info adds a small icon next to every sender, turning your inbox into something you can scan instantly — like Caller ID, but for email.

■ What it shows

🏢 Company & service mail
Displays the brand favicon of the sender's domain. Mail from tesla.com gets the Tesla logo; mail from github.com gets the GitHub icon. You can tell which company or service an email came from without opening it.

👤 Personal mail
Recognizes about 4,800 free and consumer email providers — Gmail, Outlook, Yahoo, iCloud, Proton, Naver, Daum, Kakao, Nate, and more — and adds a small "person" badge alongside the favicon. Company mail and personal accounts become instantly distinguishable.

🇰🇷 Republic of Korea government mail
Mail from korea.kr, go.kr, and mil.kr domains shows the official Government of the Republic of Korea emblem, making official government mail easy to recognize — which also helps spot messages impersonating public institutions.

🇺🇸 United States government mail
Mail from .gov and .mil domains gets a US government badge.

■ Supported mail services

Works in both the inbox list and the open-message view.

· Gmail
· Outlook (outlook.com / office.com / office365.com)
· iCloud Mail
· Yahoo Mail
· Naver Mail
· Daum Mail
· Kakao Mail
· Nate Mail

■ Who it's for

· Anyone who receives dozens of emails a day and needs to triage fast
· Professionals and freelancers juggling work and personal mail
· People who get government and institutional mail and want to catch impersonation attempts
· Anyone who wants a cleaner, more readable inbox

■ Privacy

Email Sender Info does not collect your data.

· It does not read email bodies, attachments, or recipient lists — only the sender name and address already shown on screen.
· No third-party analytics, no tracking, no remote server.
· Favicons are fetched from Google's public favicon service; nothing else is sent anywhere.

■ How to use

Just install and open a supported mail service. No setup, no login — sender icons appear automatically.