[fix] mail padding (#1565)
[fix] mail padding (#1565)


shirasagi/shirasagi,tany/ss,sunny4381/shirasagi,itowtips/shirasagi,sunny4381/shirasagi,MasakiInaya/shirasagi,shirasagi/ss-handson,tany/ss,tany/ss,itowtips/shirasagi,shirasagi/shirasagi,MasakiInaya/shirasagi,mizoki/shirasagi,ShinjiTanimoto/shirasagi,MasakiInaya/shirasagi,ShinjiTanimoto/shirasagi,shirasagi/ss-handson,mizoki/shirasagi,MasakiInaya/shirasagi,mizoki/shirasagi,itowtips/shirasagi,sunny4381/shirasagi,shirasagi/ss-handson,sunny4381/shirasagi,shirasagi/shirasagi,shirasagi/shirasagi,itowtips/shirasagi,shirasagi/ss-handson,tany/ss,ShinjiTanimoto/shirasagi,ShinjiTanimoto/shirasagi,mizoki/shirasagi