a) Sign in your Outlook (Make sure that you use the web browser.)
b) Make sure Beta is turned off.
c) Go to the setting wheel and click on "options".
d) Click on safe mailing lists.
a) Log in your Google Gmail.
b) Go to "settings" and click settings on the top right.
c) Go to "filters and Blocked addresses".
d) Click "create a new filter".
f) Check the box “Never send it to Spam” and then create the filter.
3. QQ Mail
a) Log in your QQ Email.
b) Go to "settings".
d) Click on "Domain names safe list", enter coinexpress.cc, and click "Add to domain names safe list".
e) Click "Set email address safe list", add CoinExpress official email firstname.lastname@example.org to "Safe list"
4. 163 NetEase Mail
a) Log in your 163 NetEase Mail.
b) Click "settings", and find "Security settings" part.
c) Go to "Anti-spam / Black and White List" on the left, and click "Add safe list"