====== Email Server Connection ======

  * Email server connection made of
    * username
    * password
    * incoming server url & port & security type
    * SMTP outgoing server url& port & security type

  * email retrieval connection methods
    * POP3 is good for using email server as like a catch mailbox, like with option to keep or not keep email copy on email server
    * IMAP is good for using email server as like a sync center including folders
    * ref video: http://www.youtube.com/watch?v=GcvdhjLVYfY
====== Email Server configuration ======

  * Email Server configuration is also associated with domain management, you need access the DNS settings to see all the related records to set up.
    * mx record details can be found at Domain DNS setting > DNS zone files list > TXT record (includes SPF)

  * SPF record
    * sender-policy-framework record is a text configure defining email activity on this email server, for others to verify whether this server's email is truely from this email server.
    * it helps avoid email sent from this email server been marked as junk/spam by others

  * SPF record setup guide for email sending to Hotmail. Yahoo, Gmail
    * all record should be ended with "-all" instead of "~all or ?all" to confirm verification tightness, like <code>"v=spf1 a mx ptr include:yourEmailServerURL.com -all "</code>
    * ref: http://help.directadmin.com/item.php?id=207
    * tool for check current SPF: 
      * http://www.kitterman.com/spf/validate.html
      * https://mxtoolbox.com/SuperTool.aspx
    * SPF record syntax : http://www.openspf.org/SPF_Record_Syntax
    * SPF readup: https://www.digitalocean.com/community/tutorials/how-to-use-an-spf-record-to-prevent-spoofing-improve-e-mail-reliability
    * SPF video intro: http://www.youtube.com/watch?v=AFlXF6gPQGU
    * google email server example: https://support.google.com/a/answer/178723?hl=en

  * mx record
    * mail exchange record, tells others where the host's email server is.

  * record check website:
    * https://dnschecker.org/all-dns-records-of-domain.php

====== external email server connection ======

  * use MX record + verify for linking google: https://support.google.com/a/answer/174125

====== Reference ======

  * how email server works: http://www.youtube.com/watch?v=1X3dX2JEhLE
  * max email can send per host:
    * https://docs.mailpoet.com/article/49-lists-of-hosts-and-their-sending-limits
    * https://sg.godaddy.com/help/hosting-email-relay-limits-27150
      * (cpanel: 500 per hr, plesk: 1000 per day, mgt wp: 1000 per day)
====== Email Client ======

| Mail for Windows (Windows Live Mail) | free | [[https://www.microsoft.com/en-us/store/p/mail-and-calendar/9wzdncrfhvqm|download]] | [[https://www.lifewire.com/use-signatures-in-windows-10-mail-4123784|how to add signature and logo (text)]] and [[https://www.youtube.com/watch?v=tqBi2h44SDo|video guide]] \\ [[https://www.youtube.com/watch?v=5BojigJzUGg|How to add POP IMAP emaill account (video)]] |
| ThunderBird | free | [[https://www.mozilla.org/en-US/thunderbird/|download]] | [[https://www.youtube.com/watch?v=ZoqxWvLXJqA|how to add signature and logo (videp)]] |
| Outlook for Office | office paid subscription |  | [[https://www.youtube.com/watch?v=K0zG1oK-8pg|how to add signature and logo (video)]] |

====== Problem and Solution ======

  * Problem Mass delivery fail (1000+)
    * solution: as it may be exceed server email sending limit, or maybe your email account info is stolen and been used by other for spamming. Change email password.
  * spam filter setup
    * cpanel > global email filters, create filter 
      * rule: spam status - begins with: Yes
      * discard message