So I’m a bit of a domain addict and have quite a few email accounts on those domains. Some of them are similar. There is no way to increase the width of this list on the left side in the account settings for Mail on macOS. I have to click on the entries to find out from the details on the right side which entry is which account. Because from just the list, I can only choose between mail@man…, mail@man… and mail@man….