I need to transfer my data from my old MacbookAir to my new one. However, I had several glitchy things happening with apps in my old computer. How can I transfer the important data without "baggage" (e.g., cashes) that may affect the performance?
2 major issues:
- The Mail app stopped sending emails, however, I did not know this was happening until I learned many people did not receive messages from me.
- My computer kept turning off regardless of whether I had the cover closed. When I would come back to the computer, it would turn on, and I'd get a message that it improperly shut down. I previously worked with someone from Applecare to fix the issue; it worked, but only temporarily.
MacBook Air 13″, macOS 10.12