Attachments in Conversation or Thread
How to find the attachments in long conversation?
Please follow these steps to find the attachment in conversation quickly:
Go to Airmail preferences > Appearance > Expand conversations > disable
Go to View menu > Expand quotes > disable
You will see the thread with first email expanded and all others are collapsed, please check the attachment icon and expand the particular message in thread.
Check this screenshot:

Please follow these steps to find the attachment in conversation quickly:
Go to Airmail preferences > Appearance > Expand conversations > disable
Go to View menu > Expand quotes > disable
You will see the thread with first email expanded and all others are collapsed, please check the attachment icon and expand the particular message in thread.
Check this screenshot:

Updated on: 01/09/2019
Thank you!