email_address
Canonical type definition in the Chronicle registry.
Summary
email_address is a canonical lowercase ASCII email mailbox address.
It has the form:
local-part@domain
Canonical form
An email_address value MUST:
- contain exactly one
@ - be entirely lowercase ASCII
- contain a non-empty local part
- contain a non-empty domain part
- contain no surrounding whitespace
The local part MUST:
- contain only lowercase ASCII letters, digits, and these characters:
.!#$%&'*+/=?^_`{|}~-
- not begin or end with
. - not contain consecutive dots
The domain part MUST:
- consist of lowercase ASCII labels separated by
. - contain only lowercase ASCII letters, digits,
-, and. - not begin or end with
. - not contain consecutive dots
- have labels that are non-empty
- have labels that do not begin or end with
-
Notes
email_address is a practical canonical mailbox form for Chronicle use. It does not attempt to represent every mailbox syntax accepted by email standards or specific providers.
This type does not define provider-specific alias normalization. In particular, it does not remove +tags, collapse dots, or apply provider-specific mailbox equivalence rules.
Examples
Valid:
alice@example.comalice+news@example.comops@sub.example.orga_b.c-d@example-mail.org
Invalid:
Alice@example.comalice@example.comalice..bob@example.com.alice@example.comalice.@example.comalice@example..comalice@-example.comAlice <alice@example.com>mailto:alice@example.comalice@@example.com