Add subaccount
alignment
Merge pull request #48 from bakura10/mandrill-subaccount

Add subaccount
Add missing option for Mandrill
Oly send parameters via POST, not both

An addition has been made to send parameters via POST, but they
were set via GET as well. Remove the GET parameter since most people
succeed with POSTing to the SendGrid server. Otherwise, the double
parameters only cost an additional load.
Merge pull request #49 from juriansluiman/hotfix/remove-double-paramter-setting

Only send parameters via POST, not both
Fix conflicts