add comment on MAC.getMixed
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nono/cozy-emails,clochix/cozy-emails,poupotte/cozy-emails,frankrousseau/cozy-emails,poupotte/cozy-emails,cozy-labs/emails,lemelon/cozy-emails,robinmoussu/cozy-emails,frankrousseau/cozy-emails,cozy/cozy-emails,clochix/cozy-emails,robinmoussu/cozy-emails,nono/cozy-emails,kelukelu/cozy-emails,aenario/cozy-emails,cozy/cozy-emails,cozy-labs/emails,aenario/cozy-emails,kelukelu/cozy-emails,lemelon/cozy-emails