fix: use flags

email.go

@@ -6,7 +6,6 @@ import (
 	"errors"
 	"os"
 	"path/filepath"
-	"strconv"
 	"strings"
 	"time"
 
@@ -63,10 +62,10 @@ func sendSMTPEmail(to, cc, bcc []string, from, subject, body string, attachments
 	server := mail.NewSMTPClient()
 
 	var err error
-	server.Username = os.Getenv(PopSMTPUsername)
-	server.Password = os.Getenv(PopSMTPPassword)
-	server.Host = os.Getenv(PopSMTPHost)
-	server.Port, _ = strconv.Atoi(os.Getenv(PopSMTPPort))
+	server.Username = smtpUsername
+	server.Password = smtpPassword
+	server.Host = smtpHost
+	server.Port = smtpPort
 
 	// Set defaults for gmail.
 	if strings.HasSuffix(server.Username, gmailSuffix) {
@@ -83,7 +82,7 @@ func sendSMTPEmail(to, cc, bcc []string, from, subject, body string, attachments
 	server.ConnectTimeout = 10 * time.Second
 	server.SendTimeout = 10 * time.Second
 	server.TLSConfig = &tls.Config{
-		InsecureSkipVerify: os.Getenv(PopSMTPInsecureSkipVerify) == "true", //nolint:gosec
+		InsecureSkipVerify: smtpInsecureSkipVerify, //nolint:gosec
 		ServerName:         server.Host,
 	}
 
@@ -120,7 +119,7 @@ func sendSMTPEmail(to, cc, bcc []string, from, subject, body string, attachments
 }
 
 func sendResendEmail(to, cc, bcc []string, from, subject, body string, attachments []string) error {
-	client := resend.NewClient(os.Getenv(ResendAPIKey))
+	client := resend.NewClient(resendAPIKey)
 
 	html := bytes.NewBufferString("")
 	// If the conversion fails, we'll simply send the plain-text body.