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Send emails to your users directly from inside your Hercules app. Send emails from a free Hercules email or from your own branded email address.
Hercules Emails overview showing sent emails and delivery stats

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How do I get started?

  1. Go to the Emails tab
  2. Verify a single email or an entire domain
  3. That’s it!
Now just tell Hercules when you want to send an email
Email sending examples
Send a welcome email to every user when they sign up

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What are common use cases for sending emails from within my app?

  • Welcome emails when a new user signs up
  • Form submissions
  • Invoices for a purchase
  • Order confirmations after a purchase
  • Account alerts like login from a new device

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How do I send emails to all my users?

Go to the horizontal Send email tab
Send email tab with recipient selection and compose options

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FAQ

  1. Go to the Emails tab
  2. Input the email address you want to send from.
  3. Click the verification link we send to that email
Once verified, Hercules will be able to send emails from that email address
  1. Go to the Emails tab
  2. Input the domain you want to send from.
  3. Follow the instructions to add the DNS records to your domain’s nameservers
Once your email sending domain is verified, Hercules will be able to send emails from any email address with that domain.
Yes. Ask Hercules to update the design of your emails. You can change colors, layout, logo, and content by describing what you want.
Failed emails show up as bounced in the Emails tab with a reason. Hercules stops sending to addresses that permanently bounce to protect your sender reputation.
Verifying an email address lets you send from that specific email address. Verifying a domain lets you send from any email address on that domain. Email verification is faster (click a link), while domain verification requires adding CNAME records to your DNS.
Yes, your plan determines your monthly email limit.
  1. Free: 100 emails / month
  2. Pro: 10,000 emails / month
  3. Business: 100,000 emails / month
If you need to send more emails, please contact support.
No. Hercules Emails handles everything. No external provider or API key is required.
Your domain or email may be verified however, you may still be seeing an error when trying to send an email saying “Sender ‘hello@my-domain.com’ is not a verified identity for this website” when calling hercules.email.send().This usually automatically resolves itself within 5 minutes. This is a known issue we are actively investigating. If it persists after 5 minutes, please report an issue.
  1. Check your Hercules email configuration setup. Make sure your email is properly set up and says “verified”.
  2. Make sure your email domain is correctly configured Use the following 3rd party tools to confirm everything is configured correctly:
  1. Check public spam reports. Use the following 3rd party tools to see if your domain is flagged:
  1. Test deliverability. Send a test email to a public inbox and check where it lands:
Finally, you can also investigate 3rd party “mail warming” tools