So, i’ve got an email signup block on my password page. Whenever someone sings up, I want them to be sent an automated email
To the people who have already signed up, I also want to send them an email but I guess I will just send it them manually.
Hi @aurumlux 
This is Ellie from BOGOS.io Free gift. You can use Shopify’s built-in features or third-party email marketing apps to set up automated email for new sign-ups.
1. Using Shopify Email. You will need to install Shopify Email first.
- Go to your Shopify Admin Panel.
- Navigate to Settings > Notifications.
- Scroll down to the ‘Customer notifications’ section.
- Find the 'Customer account invite’. When customers sign up, you can send them a confirmation email here. Customize the content just like you want it!
- For people who already signed up, you can send them a ‘Customer account welcome’. See my attached screenshot.
2. Third-party apps
If you want more customizations, consider using some of these apps to help with your email marketing.
If you find this helpful, appreciate it if you could give me a Like or accept it as a Solution.
Wish you all the best with the business 
Ellie