Step Wise Manual Inoutbox mail settings for thunderbird
If you don't have a Inoutbox mail address. you can create an email id from here then you can Inoutbox email login.
Open Thunderbird Software App. Click on Email
When you click on the email, pop-up Set UP an Existing Account Screen.
Enter Your name, Inoutbox Email address and Password then press Continue.
Click on the Manual config menu at bottom.
Enter Below Inoutbox incoming server settings.
In incoming click on the dropdown menu and select IMAP.
Add server host :mail.messagingengine.com
Port: 993
select SSL/TLS
Enter Below Inoutbox outgoing server settings.
In outgoing select SMTP.
Add server host :mail.messagingengine.com
Port: 587
select SSL/TLS
Tap on Done. Now you are ready to use your Inoutbox email account on your Thunderbird.