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Instructions on how to whitelist for gmail : https://www.lifewire.com/how-to-whitelist-a-sender-or-domain-in-gmail-1172106
Instructions on how to whitelist for yahoo :https://www.thebalancesmb.com/how-do-i-whitelist-email-sender-or-a-domain-in-yahoo-mail-3515043
Bixb Mining Pool Support