Hi @ErikP98 and welcome, we are so glad to have you here!
I’d like to thank you for sharing your valuable feedback with the HubSpot Community! This means a lot to us.
For new feature suggestions, I’d recommend first to search and check if this idea is already present on our Ideas Forum here. If you find a similar idea, give it an upvote and share your unique use case in the comments.
If the idea doesn’t exist already, please consider posting and creating a new Idea on our Ideas Forum here.
Thank you for being part of the discussion!
Have a lovely day!
Bérangère
Totally hear you! Fixed panels eat up way too much space on smaller screens. Just to check, are you using the classic desktop Outlook or the New Outlook (WebView-based version)?
Quickest workaround: if you’re still on the classic version, try switching back (File → Options → toggle “Try the new Outlook” off). I did that on my Surface just to get panel resizing back, since the New Outlook version locks that sidebar width.
Would be great if HubSpot could nudge Microsoft on this. In the meantime, I’d upvote any Ideas thread you find (or post one if it doesn’t exist yet) makes it easier for the product teams to push the case.