![]() ![]() When this happens, IMAP folders may also disappear. Note: Software blocking incoming email is a common cause of not being able to receive messages after updating Thunderbird, since it may be set to trust the previous version of Thunderbird but no longer recognize the updated version as trusted. Try briefly turning off antivirus, VPN, proxy and firewall software, check for new email, and turning them on and check again for email.Verify that your incoming email is not being blocked by your firewall, VPN, proxy, antivirus software (which sometimes implements a proxy and intercepts email) or your Internet Service Provider: Verify that your incoming email is not being blocked Automatic Account Configuration (for creating a new account).Manual Account Configuration (for instructions on using the New Account dialog for manual configuration).Make sure your account settings match these settings. Your email account provider can give you connection information about their servers (probably on their website). The connection to the incoming mail server is configured at the top of the page on the right. To look at the settings for an account, select Tools Edit > Account Settings in the Thunderbird menu bar, or click the Application menu button and select Options Preferences and Account Settings from the sub-menu, then select Server Settings for the account name from the list on the left. More details and instructions at Thunderbird 78 FAQ. You can temporarily lower the bar to check if this is the reason for your problem (which obviously reduces security, so it is not recommended). If your provider does not support the newer versions of the protocol, sending and receiving of messages may fail. Thunderbird 78 expects higher security standards for the so-called TLS network encryption protocol. The problem suddenly started after updating to Thunderbird version 78. 6 Are you exceeding mail provider access limits?. ![]() 5 Are you receiving some emails but not others?.4 Did your ability to receive mail suddenly stop? Was it working before?.3 Verify that your incoming email is not being blocked.2 Is your account configured correctly?.1 The problem suddenly started after updating to Thunderbird version 78.If you need more IP addresses, you can purchase IP addresses in your Account Management Panel (AMP). You can also get this information by checking your email account settings within your respective email application. Server IP Address from cPanel or WebHost Manager (WHM) (VPS / Dedicated customers only).Generally, you’ll need to provide some of the following: Important Email Settings You’ll need to contact your VPN provider for the information they require to whitelist your outgoing email. Webmail uses port 2095 (insecure) or 2096 (secure / SSL) in your browser along with port 80 (insecure) or 443 (secure). Your email app uses different ports which your VPN can allow or deny within it’s network firewall. It’s the same reason we recommend customers follow our article for strengthening overall email authentication and recommend VPS Hosting customers create an IP address pointer (PTR) record. Such activities result in VPN providers’ IP’s being blacklisted and hurt their service quality. VPN providers want to prevent malicious users from using their services and IP addresses to send spam and other unsolicited types of emails. The reason for this is simple – security. If your network and firewall aren’t blocking email ports – SMTP (25), POP3 (110 and 995), and IMAP (143 and 993) – it’s likely your VPN restricting your ability to send emails via Outlook, Thunderbird, Apple Mail, etc. There are no issues receiving email in your email app or sending email in Webmail. You can do everything else on the internet. You’re trying to clean up your inbox but your email responses don’t send – they sit in your outbox. You’re at home or in your favorite lounge with your virtual private network (VPN) application enabled because you’re connected to an open public network. Many privacy-conscious users have been there. ![]()
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