Validation - Email fields

[porta-antiporta]

Email validation controls

• Error messages - at minimum meets WCAG 2.1 standards level AA.
• (To confirm with USPS) Check MX record of domain name

[hartsick]

Blocking on USPS requirements for email validation, but we can do a basic format check before those are resolved

[porta-antiporta]

Takkng out checking MX record from this ticket. If we need it, will open a separate one.

[porta-antiporta]

Also, given ours is also rails app, recommend trying to leverage what was used for login.gov's IDP.

[hartsick]

it looks like IDP uses this gem: https://github.com/hallelujah/valid_email, which defaults to regex but optionally allows for MX validation if service provided