Knowledgebase

Swaks is a very good and easy tool to test SMTP. It's a one-file Perl script that you can download and use with a simple command.

Note: SSH/Terminal Access is required

1. Open SSH/Terminal window
2. Get the latest download link of the standalone script from http://www.jetmore.org/john/code/swaks/
3. Download swaks 

   curl http://www.jetmore.org/john/code/swaks/files/swaks-20201014.0/swaks -o swaks

4. Change permissions to 755 chmod 755 swaks
5. Run Swaks using this command to send Email using SMTP AUTH
   

   ./swaks --auth \
   --server mail.server.com \
   --protocol SMTP \
   --au AUTH_USERNAME \
   --from from@domain.com \
   --ap AUTH_PASSWORD \
   --to to@address.com \
   --h-Subject: "Hello" \
   --body 'Test email!'

   OR

   ./swaks --auth PLAIN \
   --server mail.server.com:587 \
   --au AUTH_USERNAME \
   --from FROM_ADDRESS \
   --ap 'AUTH_PASSWORD' \
   --to TO_ADDRESS \
   --h-Subject: "SUBJECT" \
   --body 'Test email!'

You can learn more about command options from this link https://www.mankier.com/1/swaks#Protocol_Options