Swiftmailer: Connection could not be established with host smtp.gmail.com [Connection timed out #110]

Question

I\'m posting because I\'ve already gone through the solutions posted in other questions on here but they haven\'t helped.

What I am trying to do is send email using

Answer 1

I have posted a workaround solution in Swiftmailer Gmail Connection timed out #110 where you can either use IPv4 or IPv6.