https://www.labnol.org/internet/print-multiple-gmail-in-bulk/29000/
If having issues, check your security settings. From that other account, go to Account settings -> Security -> Less secure app access -> On.
Change it in Google Calendar.
https://www.lifewire.com/how-to-correct-your-gmail-time-zone-1172121
Chrome plugin: https://chrome.google.com/webstore/detail/strikethrough/peahilnfgiacdkackbnbdbgkkjaghool A little flaky.
Alternatively, copy strikethrough text from another program/website and then edit it. https://webapps.stackexchange.com/questions/62412/how-do-i-strikethrough-text-in-gmail
Shift + I
is:unread -> Checkbox -> All -> "Select all conversations that match this search" -> More -> Mark as read
http://www.zdnet.com/article/how-to-mark-all-unread-emails-as-read-in-gmail-and-more/
Unindent (Ctrl + [)
# by date
before:2015/12/25 after: 2015/12/01
# with attachment
has:attachment
https://support.google.com/mail/answer/7190?hl=en http://www.makeuseof.com/tag/quickly-find-email-attachments-gmail/
dinner -movie # emails that contain "dinner" but not "movie"
https://support.google.com/mail/answer/7190?hl=en
https://support.google.com/mail/answer/6594?hl=en
z # undo last action
v # move message to a different label
Shift + i # mark message as read
Shfit + u # mark as unread
k # next conversation
j # previous conversation
n # Move cursor to newer message in conversation (next message in thread)
Shift + o # open in new window
p # Move cursor to previous message in conversation
# # move conversation to Trash / delete / discard
y # Remove from current view (removes a label if the current view is a label)
x # select conversation
a # reply all
Shift + a # reply all in new window
r # reply
Shift + r # reply in new window
* a # select all mail
* n # unselect all
/ # Put cursor in search box
label:LABEL is:unread
Ctrl/Cmd + click the Compose button or your Saved Draft