GitHub - georgjf/SMTPtool: A slim .NET based UI tool to communicate with SMTP servers and to quickly compose, mail and remail messages
GitHub - lwcorp/lwsmtp-server: A portable SMTP Server emulator which shows any outgoing message your local mail clients try to send
![DigitalOcean on Twitter: "@kepstin We block SMTP on IPv6 for all droplets, you can read more about it here: https://t.co/w3VwiOi2ei" / Twitter DigitalOcean on Twitter: "@kepstin We block SMTP on IPv6 for all droplets, you can read more about it here: https://t.co/w3VwiOi2ei" / Twitter](https://pbs.twimg.com/media/CS8oinVVEAAovWy.png)