Install smtpping by entering the following commands in the terminal:
sudo apt update sudo apt install smtpping
Description:
SMTP benchmarking and measurement tool
A simple, portable tool for measuring SMTP server delay, delay variation and throughput. Its options (v4 or v6, variable ping sizes etc), make it a quick and lightweight tool for testing SMTP server metrics.
Homepage: https://github.com/halonsecurity/smtpping
Version: 1.1.3-1
Section: universe/net