For email and word processing, it depends on what you've previously used. I would say that LibreOffice is quite all right for word processing. Also have a look at FreeOffice (https://www.freeoffice.com/en/) which aims for great compatibility with MS Office.
For an email client, I personally use the GMail web client nowadays, but I've used Thunderbird for a long time and it's fine (not as polished and good looking as Mail.app on MacOS though).
- MacBook Air is still lovely (once ahem I had keyboard fixed)
- Basic productivity tools on Linux - eg email or word processing - still suck and I want native apps for such things.
Any solution?