I'm pretty happy with Thunderbird. Apple's latest "Mail" app is good too but I still use Thunderbird. I just checked and mine says "115.3.3 (64-bit) Thunderbir

I'm pretty happy with Thunderbird. Apple's latest "Mail" app is good too but I still use Thunderbird. I just checked and mine says "115.3.3 (64-bit) Thunderbird is up to date" so I guess I'll be waiting a bit for the update but I haven't run into any of the issues they cite so I'm in no hurry.