Expose normalization functionality in EmailStr

[tamird]

Initial Checks

• I have searched Google & GitHub for similar requests and couldn't find anything
• I have read and followed the docs and still think this feature is missing

Description

email-validator provides a normalized view of validated email addresses. It should be possible to get this from EmailStr.

This was mentioned in #9416 which was closed.

Affected Components

• Compatibility between releases
• Data validation/parsing
• Data serialization - .model_dump() and .model_dump_json()
• JSON Schema
• Dataclasses
• Model Config
• Field Types - adding or changing a particular data type
• Function validation decorator
• Generic Models
• Other Model behaviour - model_construct(), pickling, private attributes, ORM mode
• Plugins and integration with other tools - mypy, FastAPI, python-devtools, Hypothesis, VS Code, PyCharm, etc.

[sydney-runkle]

@tamird,

Ah I see, thanks for elaborating. Sounds like a great feature request. PRs welcome!

[tamird]

@sydney-runkle is there precedent for this kind of configuration? Do I need to introduce EmailStrNormalized?

[sydney-runkle]

@tamird,

I think we could probably just introduce an extra property on the EmailStr class...

[tamird]

How would that work? Is there precedent for such configurability?

[sydney-runkle]

@tamird,

Yeah, EmailStrNormalized could work, though I'm not sure if it's a high enough demand type that it belongs in Pydantic's code. Maybe pydantic-extra-types or simply user code...