Retrieving attachments from a conversation in Messages

Hi Oregon Nana,

welcome to the Apple (user-to-user) Community!

Re: "Retrieving attachments from a conversation in Messages"

In info. view you can generally "drag" an attachment to the desktop.

Here's how to view and save items like photos (including Live Photos), videos, and audio messages.

ie: You can view these items right in the conversation, or in Info view:

See how to: View photos, videos, and audio in Messages on Mac - Apple Support

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Re: "Find attachments from a conversation"

If needed: See how to: Search for a conversation in Messages on Mac - Apple Support

You can then view / save / the attachment.

If needed:

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For more info: Apple has a useful Messages User Guide for Mac - Apple Support online:

You can :

Click on "Table of Contents" to view various topics which lead to detailed "how to" articles:

(eg: including the linked articles above)

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More support / info. / contact options / are available on the Messages Support website (link below):

Messages for iPhone, iPad, Apple Watch, and Mac - Official Apple Support

All the best :-)