Step Wise Manual Fastmail mail settings for opera mail
If you don't have a Fastmail mail address. you can create an email id from here then you can Fastmail email login.
Open opera mail Software App. Click on Mail and Chat Accounts.... Select Email and click Next
Enter Your Real Name. Then Enter Email Address. Then Click on Next.
Enter Email Address as Login name and Enter Password in Password. Check Mark IMAP. Then Click on Next.
Enter mail.messagingengine.com in incoming server settings. select SSL/TLS Enter mail.messagingengine.com in outgoing server settings. select SSL/TLS
Then Click Finish
Tap on Done. Now you are ready to use your Fastmail email account on your opera mail.