Head to Thunderbird's Options and go to Advanced > Config Editor, and click the 'I Accept the Risk' button when prompted. There are a few ways to accomplish this (Opens in a new window), but the best method is hidden in Thunderbird's Config Editor. By default, many may download your inbox, but not other folders, so you'll want to make sure Thunderbird is grabbing all your messages every time it checks for mail on the server. You can do this by right-clicking on the account in Thunderbird, going to Settings > Server Settings, and unchecking 'For at Most 14 Days' and 'Until I Delete Them' under Leave Messages On Server.Įvery service uses IMAP a little differently. You also want to make sure Thunderbird doesn't delete messages from the server after downloading them. POP, on the other hand, is a bit more dated, and creates a completely separate database on your computer. IMAP tries to mirror what's on the server, so if you delete a message from your inbox on, that email will disappear from Thunderbird as well. When given the choice between IMAP and POP, you'll generally want to choose IMAP. Again, check your email service's documentation if you have trouble. If you're using two-factor authentication, you may need to generate an app-specific password in your web mail's settings, too. Gmail, for example, requires you to enable it on this page (Opens in a new window). When setting up an email client, you may need to enable IMAP (Internet Message Access Protocol) and POP (Post Office Protocol) access in your webmail's settings first as well. How to Set Up Two-Factor Authentication.How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.How to Save Money on Your Cell Phone Bill.

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