Make email relay provider info more usable in other components

dashboard/src/constants.js

@@ -317,6 +317,23 @@ const BACKUP_FORMATS = [
     { name: 'rsync', value: 'rsync' }
 ];
 
+const RELAY_PROVIDERS = [
+  { provider: 'cloudron-smtp', name: 'Built-in SMTP server' },
+  { provider: 'external-smtp', name: 'External SMTP server', host: '', port: 587 },
+  { provider: 'external-smtp-noauth', name: 'External SMTP server (No Authentication)', host: '', port: 587 },
+  { provider: 'ses-smtp', name: 'Amazon SES', host: 'email-smtp.us-east-1.amazonaws.com', port: 587, spfDoc: 'https://docs.aws.amazon.com/ses/latest/DeveloperGuide/spf.html' },
+  { provider: 'brevo-smtp', name: 'Brevo', host: 'smtp-relay.brevo.com', port: 587, spfDoc: 'https://help.brevo.com/hc/en-us/articles/12163873383186-Authenticate-your-domain-with-Brevo-Brevo-code-DKIM-DMARC' },
+  { provider: 'elasticemail-smtp', name: 'Elastic Email', host: 'smtp.elasticemail.com', port: 587, spfDoc: 'https://elasticemail.com/blog/marketing_tips/common-spf-errors' },
+  { provider: 'google-smtp', name: 'Google', host: 'smtp.gmail.com', port: 587, spfDoc: 'https://support.google.com/a/answer/33786?hl=en' },
+  { provider: 'mailgun-smtp', name: 'Mailgun', host: 'smtp.mailgun.org', port: 587, spfDoc: 'https://www.mailgun.com/blog/white-labeling-dns-records-your-customers-tips-tricks' },
+  { provider: 'mailjet-smtp', name: 'Mailjet', host: 'in-v3.mailjet.com', port: 587, spfDoc: 'https://app.mailjet.com/docs/spf-dkim-guide' },
+  { provider: 'office365-legacy-smtp', name: 'Office 365', host: 'smtp-legacy.office365.com', port: 587 }, // uses "login" AUTH instead of "plain"
+  { provider: 'postmark-smtp', name: 'Postmark', host: 'smtp.postmarkapp.com', port: 587, spfDoc: 'https://postmarkapp.com/support/article/1092-how-do-i-set-up-spf-for-postmark' },
+  { provider: 'sendgrid-smtp', name: 'SendGrid', host: 'smtp.sendgrid.net', port: 587, username: 'apikey', spfDoc: 'https://sendgrid.com/docs/ui/account-and-settings/spf-records/' },
+  { provider: 'sparkpost-smtp', name: 'SparkPost', host: 'smtp.sparkpostmail.com', port: 587, username: 'SMTP_Injection', spfDoc: 'https://www.sparkpost.com/resources/email-explained/spf-sender-policy-framework/' },
+  { provider: 'noop', name: 'Disable' },
+];
+
 // named exports
 export {
     API_ORIGIN,
@@ -346,6 +363,7 @@ export {
     REGIONS_HETZNER,
     REGIONS_WASABI,
     REGIONS_S3,
+    RELAY_PROVIDERS,
 };
 
 // default export
@@ -377,4 +395,5 @@ export default {
     REGIONS_HETZNER,
     REGIONS_WASABI,
     REGIONS_S3,
+    RELAY_PROVIDERS,
 };