What's the difference between an email client and webmail?

An email client is software you install on your computer or phone (like Outlook, Apple Mail, or Thunderbird). Webmail is email you access through a browser without installing anything (like Gmail, Yahoo Mail, or Outlook.com).

The practical difference: clients download your email to your device using IMAP or POP, which means you can read, search, and organize messages without an internet connection. Webmail keeps everything on the server, so you need a connection to access anything. (Though some webmail interfaces will cache recent messages.)

Here's where clients shine: you can connect multiple email accounts in one window, set up advanced filters and automations, integrate with calendars and task managers, and search your entire email history without waiting for a server to respond. If you've ever tried to find a three-year-old receipt in Gmail's search while on spotty hotel wifi, you know the pain webmail can cause. A client has that email already on your laptop.

Webmail's advantage is that it's always current across every device. Check email on your phone during lunch, archive a message, and it's gone when you open your laptop at home. With a badly configured email client, you might archive something on your desktop and still see it unread on your phone. (That's a sync issue, fixable with IMAP settings, but it trips up a lot of people.)

Most professionals use both. Webmail when you're traveling or borrowing someone else's computer (you don't want your email credentials saved on a random device). A desktop client when you're doing focused work and need powerful search, keyboard shortcuts, or integrations with other tools. Some people even use a client as their primary interface but keep webmail as a backup for when the client acts up or when they need to quickly share a message from their phone.

The rise of Google Workspace and Microsoft 365 blurred this line. Gmail in a browser is webmail. But Gmail in the Gmail app on your phone is sort of a client (it's installed software) that mostly behaves like webmail (always synced, no real offline mode). Same with Outlook's desktop app when it's connected to Microsoft 365. It's installed software, but it streams messages on demand rather than downloading your entire mailbox. The terms overlap now.

If you're choosing between the two, ask yourself: do you need offline access? Do you manage multiple accounts? Do you want advanced automation or integrations? If yes to any of those, try a client. If you just want to check email from anywhere without setup, stick with webmail. And if you're not sure, start with webmail and add a client later when you hit its limits.