Mailspring is a mail client application that lets you connect to multiple e-mail accounts. Using a single inbox for all e-mail accounts helps you get more done in less time. Mailspring supports every major mail provider—Gmail, iCloud, Office 365, Outlook.com, Yahoo!, and IMAP/SMTP—so you have a single, streamlined command center for all your messages.
Mailspring lets you create unlimited custom signatures and use them across all the accounts in your unified inbox.
Mia for Gmail (was Notifier Pro for Gmail) is a desktop Gmail client which sits politely in your menu bar.
