The SMTP client transmits the message to the mail exchange, which may forward it to another mail exchange until it eventually arrives at the host of the recipient's mail system. The general format of an email address is domain, e.g. Īn email address consists of two parts, a local part and a domain if the domain is a domain name rather than an IP address then the SMTP client uses the domain name to look up the mail exchange IP address. With the introduction of internationalized domain names, efforts are progressing to permit non-ASCII characters in email addresses. Mail systems often limit the users' choice of name to a subset of the technically permitted characters. It also urges that receiving hosts deliver messages in a case-independent manner, Į.g., that the mail system in the domain treat John.Smith as equivalent to john.smith some mail systems even treat them as equivalent to johnsmith. Although the standard requires the local part to be case-sensitive, A mailbox value can be either a name-addr, which contains a display-name and addr-spec, or the more common addr-spec alone.Īn email address, such as is made up from a local-part, the symbol and a domain, which may be a domain name or an IP address enclosed in brackets. The RFC defines address more broadly as either a mailbox or group.
The term email address in this article refers to just the addr-spec in Section 3.4 of RFC 5322. While early messaging systems used a variety of formats for addressing, today, email addresses follow a set of specific rules originally standardized by the Internet Engineering Task Force (IETF) in the 1980s, and updated by RFC 53. (Tutanota only allows a single free account, by the way.)ģ3 Mail and Anonaddy have good free plans, and they also have cheap paid plans.Identifier of the destination where email messages are deliveredĪn email address identifies an email box to which messages are delivered. It's the same with Tutanota, except their entry paid plan is much cheaper. With Proton, you need to open a paid account to have several addresses.
The best way is either to open an account which allows multiple addresses (also called aliases sometimes), or link your main account to an alias provider and remailer, such as 33 Mail, Anonaddy or Simple Login. So you're already off to a bad start, because when Proton Mail considers you've broken their rules, they ban all your accounts without warning.Īnyway, even if having several free accounts could not land you into trouble, this would be inconvenient, because you wouldn't be able to manage all your addresses from a single account. Proton Mail allows more than one free account, but "multiple" ones are explicitely forbidden, and "multiple" means "too many, but we're not telling you how many, and there's probably no hard limit either". What you envision is not the best way to satisfy your needs.
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