Hit the Allow other app button and add Thunderbird to the list.Then click Allow an application through the firewall.Type ‘firewall’ in the Windows search box.Select Add or Remove Exclusions → Add an Exclusion and select Thunderbird.Then click Virus and threat protection → Manage settings.Go to Settings → Update & Security → Windows Security.If you can send and receive emails with your antivirus and firewall disabled, please whitelist Thunderbird. To test if your antivirus or firewall is blocking outgoing emails, simply disable the tools. Or they could be blocking emails from reaching your inbox. Your antivirus or firewall may be preventing Thunderbird from delivering your messages. Whitelist Thunderbird or disable your antivirus / firewall For more information on the IMAP settings to use, go to the official website of your email account provider.Select Server Settings and make sure you are using the correct IMAP server settings.Click on the three lines to open the menu.If you are using a different email service, go to your email provider’s website and find the SMTP email settings to use.If you don’t know which SMTP settings to use, check out the Thunderbird support pages:.Check the SMTP server settings for your email address.Start Thunderbird and click on the menu.Make sure you are not trying to send emails from Thunderbird using another email service’s SMTP server. This is why you need to make sure that you are using the correct SMTP server settings. Not using the correct SMTP settings can prevent you from sending emails using Thunderbird. The server then distributes them to the recipients. In other words, the emails you send are first collected by the SMTP server.

The SMTP (Simple Mail Transfer Protocol) server plays the role of postman in the world of e-mail. Use this method if you cannot send emails.

How to send and receive hotmail from thunderbird Check your SMTP server settings

Import Hotmail to Thunderbird and configure servers.Manually configure Hotmail for Thunderbird.Download and run the tool and log in with your Hotmail account.Automated method to add Hotmail to Thunderbird.Whitelist Thunderbird or disable your antivirus / firewall.How to send and receive hotmail from thunderbird.

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