The best thing about this software that I like most was its compatibility for both Mac OS X & windows operating systems.
It also has an option of attaching multiple PDFs at once without any hassle or confusion while sending emails from my computer system through Gmail account. There are few options available under "More" tab when viewing attachments but nothing much else comes out here except some images/pictures etc., Nothing really bad though! If anyone wants something simple yet user-friendly then try using everdesk Email Client Software because there's no doubt that they have made their clients very easy to use compared to others similar products already present online today. We used them during our college days (in India) where we were assigned projects by different companies who wanted us to send bulk mails via gmail accounts.