OK, so if I purchase e.g. the Startersplan in theory I could create an e-mail account of maximum 300 Mb.
An additional question regarding the size of e-mail accounts: Is it also possible to create an e-mail account of 0 Mb (alias) such that all incomming e-mails are only forwarded to a general e-mail account? What I mean:
general@mysite.com - (20 Mb) receives all e-mails
alias@mysite.com - (0 Mb) forwards all incomming e-mail to general@mysite.com and an additional copy to someone@elsewhere.com?
Is it possible to create different mail identities for general@mysite.com such that it appears if the sender of the e-mail is alias@mysite.com?