Update email templates to use domain in env variables

[cherylli]

update email template to use domain based on env variables

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Feature updates / changes
• Tests
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

created a new email account and sent a test email

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have updated the change log

[curtwl]

Everything working here

[cherylli]

url is wrong, it has an extra / but that's because I set the wrong env variable 😂, fixed it on railway now

[JoshuaHinman]

Tested email routes - got 200s