

If the client keeps not sending emails, it’s likely that you have a general issue with your Internet Service Provider (which you should contact immediately). Make sure that you have an exception rule for your SMTP service in your firewall, proxy service or antivirus settings. Maybe you configured your mail client with a wrong outgoing server name: have a look at our list of SMTP and POP providers to double check it, or contact the provider. SMTP normally uses port 25, but it may happen to be blocked by your ISP: try switch to port 587 (or port 465 if you’re connecting via SSL). If you’re using an SMTP authentication like SSL, check again your username and password. That said, here are the most frequent “email not sending” issues, and how to troubleshoot them: In fact, the normal servers associated to a common email provider (like Gmail or Hotmail) can run into several problems as they are not monitored: the best choice to avoid them all is to rely on a professional SMTP Relay Server like turboSMTP. Provided that you’re correctly connected to the internet (yes, it happens…) the causes are probably related to your SMTP server – the machine that takes care to deliver your outcoming messages. This is a very commonly used email protocol, alongside internet message access.

Simply put, SMTP is a set of rules that allows different email accounts and clients to streamline information exchange. So, why sometimes your mail client is not sending emails? Maybe it keeps on receiving them, but the outgoing emails are not sent at all. Simple mail transfer protocol (SMTP) is an email protocol that enables the transmission of emails among user accounts over an internet connection. Issues concerning email sending are unfortunately pretty common, either in the daily communications or when it comes to newsletters and bulk messages.
