Hi! Since you have 2FA enabled on your Google account, Gmail won't accept your normal login password for SMTP — you'll need to generate an App Password instead. Here's how:
- Go to your Google Account → Security → 2-Step Verification → App passwords.
- Create a new app password (name it something like “SubsiMail”).
- Google will give you a 16-character code — use that as your SMTP password, not your regular Gmail password.
Then in Settings > Sending, use:
- Host:
smtp.gmail.com - Port:
587 (STARTTLS) — port 465 (SSL) also works if 587 is blocked on your network - Username: your full Gmail address
- Password: the 16-character app password
One heads-up: Gmail caps you at 500 recipients/day on a free account (2,000/day on Google Workspace), so it's fine for testing but you'll want a dedicated sending domain once you're doing real volume — happy to help with that when you get there.