Fix slowness, crashing, error messages and other problems

Fix problems with email providers (gmail, Yahoo, etc.)

Learn how to fix problems with Gmail, Yahoo and other email providers

  • Why has my "Send" button been replaced with "Send Later" How to get back your "Send" button when it has been replaced by "Send Later"
  • Automatic Account Configuration Setting up a new account with Thunderbird is easy. All you need to do is provide your user name and password for your email provider and your email address. Thunderbird determines connection details (such as ports, server names, security protocols, etc.) by looking up your email provider in a database that contains connection information for all the major Internet Service Providers (ISPs). After determining the provider of your account (as specified after the "@" symbol in your email address) Thunderbird can usually provide the account details.
  • IMAP Synchronization IMAP stands for the Internet Message Access Protocol. It enables a mail client (such as Thunderbird) to access messages stored on a mail server. It is more modern and fully featured than POP (Post Office Protocol), which is the other major protocol for accessing mail messages. Most email providers now support IMAP. To see whether your account uses IMAP or POP, check the Server Settings page in the Account Settings.
  • Cannot receive messages Troubleshooting information for if you are having problems receiving messages.
  • Manual Account Configuration This article will show you how to manually configure the basic settings you need to send and receive emails with Thunderbird.
  • Sending and Receiving Messages on Thunderbird This article explains the sending and receiving functions in Thunderbird.
  • Cannot Send Messages If you cannot send messages, this page provides a series of steps you can use to check for common problems.
  • Why does Thunderbird warn me that my server doesn't use encryption? This article explains why Thunderbird displays a warning if you set up an account which doesn't use encryption in order to protect your connection.
  • FAQ Changing IMAP to POP As of Thunderbird 3, the new [[Automatic Account Configuration]] Wizard can help you configure your connection to your email provider, but only if your provider is in Mozilla's database of Internet Service Providers or recognized by Thunderbird. While most of the large providers are included, many smaller ones are not yet in the account configuration database. If your mail server supports both IMAP and POP, Thunderbird will use IMAP by default. POP is also supported but must be manually configured using the following instructions
  • Avoiding Quota Limits on Mail Servers This article explains how you can keep your mail server under your storage's limit and what you can do if you get a warning like "over quota", "quota exceeded" or "mailbox for user is full".
  • Configure Origin Address for Multiple Gmail Accounts Thunderbird can be used to manage multiple email accounts. These accounts can either be from the same or different email providers. However, when you have multiple Gmail accounts, by default Gmail will use your default account as the "From" and "Reply To" addresses. You must manually configure an alternate email address to be used as the "From" and "Reply To" values in messages.
  • Configuring Email Aliases Instructions for configuring email aliases in Thunderbird using filters and identities
  • ISP Configuration Settings Each Internet Service Provider has a different set of configuration parameters for connecting to their email servers. A few of the most common connection scenarios are described in the pages accessed via the following links. The ISPs' websites and help pages are, however, the best source of connection information.
  • ISP Database Thunderbird version 3 tries to make things easier for users by enabling automatic configuration of the connection to their mail servers. Users provide their email account, user name and password, and then Thunderbird queries a database to find connection information for incoming and outgoing mail servers. This page gives instruction on how to add Internet Service Provider (ISP) configuration data to the database. It also describes the security mechanisms that prevent malicious entries in the ISP database that could put users at risk.
  • Changing IMAP to POP As of Thunderbird 3, the new Automatic Account Configuration Wizard can help you configure your connection to your email provider, but only if your provider is in Mozilla's database of Internet Service Providers or recognized by Thunderbird. While most of the large providers are included, many smaller ones are not yet in the account configuration database.
  • FAQ AOL email Sent Folder As of February 2010, AOL email accounts no longer automatically store sent messages in Thunderbird's '''Sent''' message folder. However, you can manually configure Thunderbird to do this.