bump Mail to ~>2.5.0 (fixes #336)
bump Mail to ~>2.5.0 (fixes #336)

reedloden/backup,McStork/backup,rics3n/backup,scalp42/backup,McStork/backup,interu/backup,zBMNForks/backup,backup/backup,otzy007/backup,zBMNForks/backup,skcript/backup,reedloden/backup,backup/backup,pawelduda/backup,tian-xiaobo/backup,pawelduda/backup,pollosp/backup,backup/backup,ccoenen/backup,rics3n/backup,pollosp/backup,scalp42/backup,hiphapis/backup,McStork/backup,rics3n/backup,martincik/backup,martincik/backup,ccoenen/backup,pawelduda/backup,zires/backup,tian-xiaobo/backup,zires/backup,zBMNForks/backup,skcript/backup,martincik/backup,otzy007/backup,bernd/backup,zires/backup,pollosp/backup,hiphapis/backup,ccoenen/backup,interu/backup,hiphapis/backup,skcript/backup,scalp42/backup,reedloden/backup,bernd/backup,interu/backup,tian-xiaobo/backup,otzy007/backup