1. in settings, click ‘Add another email address’
2. input the second email address you want to use as sender
3. send verification
4. login into the second email account, collect the verification code, and input the code
5. now you could send email using secondary email address
Mark ALL unread emails in Gmail with one action, without going through the emails page by page.
MIT Technology Review found that nearly 80% of Americans are reading email on their smartphones, so here’s how to mark multiple emails as read on mobile.