Add per-email sender name for compliance page emails

When an email has a sender name set (the organization name), the
mailer composes the From header as "OrgName via Probo" instead of
the default global sender name. This gives compliance page
recipients clearer context about which organization is contacting
them.

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

pkg/coredata/email.go

@@ -31,6 +31,7 @@ type (
 		ID                  gid.GID     `db:"id"`
 		RecipientEmail      string      `db:"recipient_email"`
 		RecipientName       string      `db:"recipient_name"`
+		SenderName          *string     `db:"sender_name"`
 		ReplyTo             *mail.Addr  `db:"reply_to"`
 		UnsubscribeURL      *string     `db:"unsubscribe_url"`
 		MailingListUpdateID *gid.GID    `db:"mailing_list_update_id"`
@@ -51,6 +52,7 @@ type (
 	Emails []*Email
 
 	EmailOptions struct {
+		SenderName          *string
 		ReplyTo             *mail.Addr
 		UnsubscribeURL      *string
 		MailingListUpdateID *gid.GID
@@ -91,6 +93,7 @@ func NewEmail(
 	}
 
 	if opts != nil {
+		e.SenderName = opts.SenderName
 		e.ReplyTo = opts.ReplyTo
 		e.UnsubscribeURL = opts.UnsubscribeURL
 		e.MailingListUpdateID = opts.MailingListUpdateID
@@ -108,7 +111,9 @@ INSERT INTO emails (
 	id,
 	recipient_email,
 	recipient_name,
-	reply_to, unsubscribe_url,
+	sender_name,
+	reply_to,
+	unsubscribe_url,
 	mailing_list_update_id,
 	subject,
 	text_body,
@@ -123,6 +128,7 @@ VALUES (
 	@id,
 	@recipient_email,
 	@recipient_name,
+	@sender_name,
 	@reply_to,
 	@unsubscribe_url,
 	@mailing_list_update_id,
@@ -141,6 +147,7 @@ VALUES (
 		"id":                     e.ID,
 		"recipient_email":        e.RecipientEmail,
 		"recipient_name":         e.RecipientName,
+		"sender_name":            e.SenderName,
 		"reply_to":               e.ReplyTo,
 		"unsubscribe_url":        e.UnsubscribeURL,
 		"mailing_list_update_id": e.MailingListUpdateID,
@@ -172,6 +179,7 @@ func (emails Emails) BulkInsert(
 			e.ID,
 			e.RecipientEmail,
 			e.RecipientName,
+			e.SenderName,
 			e.ReplyTo,
 			e.UnsubscribeURL,
 			e.MailingListUpdateID,
@@ -186,7 +194,7 @@ func (emails Emails) BulkInsert(
 	_, err := conn.CopyFrom(
 		ctx,
 		pgx.Identifier{"emails"},
-		[]string{"id", "recipient_email", "recipient_name", "reply_to", "unsubscribe_url", "mailing_list_update_id", "subject", "text_body", "html_body", "created_at", "updated_at"},
+		[]string{"id", "recipient_email", "recipient_name", "sender_name", "reply_to", "unsubscribe_url", "mailing_list_update_id", "subject", "text_body", "html_body", "created_at", "updated_at"},
 		pgx.CopyFromRows(rows),
 	)
 	return err
@@ -198,7 +206,7 @@ func (e *Email) LoadNextPendingForUpdateSkipLocked(
 ) error {
 	q := `
 SELECT
-	id, recipient_email, recipient_name, reply_to, unsubscribe_url, mailing_list_update_id, subject, text_body, html_body,
+	id, recipient_email, recipient_name, sender_name, reply_to, unsubscribe_url, mailing_list_update_id, subject, text_body, html_body,
 	status, processing_started_at, attempt_count, max_attempts,
 	last_attempted_at, last_error, created_at, updated_at, sent_at
 FROM emails

pkg/coredata/migrations/20260322T120000Z.sql

@@ -0,0 +1 @@
+ALTER TABLE emails ADD COLUMN sender_name text;