A simple local SMTP server [closed]

Question

I want to test a Java code for sending email. I don't want to use any commercial mail client or connect to any external mail providers (like Gmail or Yahoo). I would like to know if there is any software which allows a user to configure dummy email addresses and server (locally) which can be used in my software to send and receive mails. I just want to test the functionality of the Java code.

Answer 1

amazing docker
https://hub.docker.com/r/mailhog/mailhog/
(gitHub - https://github.com/mailhog/MailHog)
This docker has two ports:
One port for sending SMTP e-mails (smtp://0.0.0.0:1025/)
A second port to the e-mail display on the web (http://0.0.0.0:8025/)

run docker:
docker pull mailhog/mailhog
docker run --name=mailhog -d -p 1025:1025 -p 8025:8025 mailhog/mailhog

Answer 2

on Leopard you can start a Local SMTP Server (Postfix) on OS-X Leopard

sudo vi /System/Library/LaunchDaemons/org.postfix.master.plist

before the closing tag at the end:

<key>RunAtLoad</key> <true/> <key>KeepAlive</key> <true/>

then start the thing with

sudo postfix start

now you check wheter the service is running with:

telnet localhost 25

Answer 3

I've used Mailtrap a few times, and I can recommend it.

Answer 4

You can use Wiser in the SubEthaSMTP library, Wiser's purpose is exactly what you want, unit testing.