Is hard to beat a pay as you go email provider with no limits on the number of users and domains you can have -> purelymail.com It's the cheapest option i foun

Is hard to beat a pay as you go email provider with no limits on the number of users and domains you can have -> purelymail.com It's the cheapest option i found, i pay less than 10 $ a year. It works perfectly on Thunderbird. With CalDAV and CardDAV support you have a standard protocol for your contacts and calendar; very portable.