If you have Gmail then in addition to JAXBA's suggestion of moving the . around in the address, you can also add a "+abc" directly before the @gmail.com, e.g. [email protected] and [email protected] will both be delivered to the [email protected] address and might be easier to remember than which child has the . in which position. The only drawback of this solution is that some systems will not accept a + in an email address.