Email / Phone validation in SharePoint 2010 Column validation
=(LEN(LEFT([Email Address],FIND("@",[Email Address])-1))>0)+(LEN(RIGHT([Email Address],LEN([Email Address])-FIND(".",[Email Address],FIND("@",[Email Address]))))>0)+(LEN(MID([Email Address],FIND("@",[Email Address])+1,FIND(".",[Email Address],FIND("@",[Email Address]))-FIND("@",[Email Address])-1))>0)+(ISERROR(FIND(" ",[Email Address]))=TRUE)=4 -------------------- Phone Validation (example: 123-456-7896x486): =AND(LEN([Phone Number])=16,IF(ISERROR(FIND("",[Phone Number],1)),FALSE,(FIND("",[Phone Number])=1)),IF(ISERROR(FIND("-",[Phone Number],4)),FALSE,(FIND("-",[Phone Number],4)=4)),IF(ISERROR(FIND("-",[Phone Number],8)),FALSE,(FIND("-",[Phone Number],8)=8)),IF(ISERROR(FIND("x",[Phone Number],13)),FALSE,(FIND("x",[Phone Number],13)=13)),IF(ISERROR(1*CONCATENATE(MID([Phone Number],1,3),MID([Phone Number],5,3),MID(...