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that would be a lot of semi-colons
This example uses MySQL, but you can modify it for your database.
tMySQLInput_1 -- > tFlowToIterate --> tSendMail
In tFlowToIterate uncheck "Use the default (key, value) in global variables" and create a key called "email_address", that is set to the email address field from your database input.
In the To field of tSendMail use: (String)globalMap.get("email_address")