How to Set Up SendGrid as Your SMTP Provider in Sparkforge

SendGrid handles outbound email at scale and pairs cleanly with Sparkforge. Setup takes about five minutes once you have a SendGrid account and a verified sender address.

Step 1: Sign up for SendGrid

Create a free SendGrid account at signup.sendgrid.com.

Step 2: Add the email service in Sparkforge

Inside your sub-account, go to Settings > Email Services > Add Service and select SendGrid from the dropdown.

To configure SendGrid for every sub-account at once, do this from the agency view at /settings/email_services.

Step 3: Generate a SendGrid API key

1. In SendGrid, go to Settings > API Keys.
2. Click Create API Key.
3. Name the key, set permissions to Full Access, and click Create & View.
4. Copy the key — SendGrid only shows it once.

Step 4: Paste the API key into Sparkforge

Back in Sparkforge, fill in the SendGrid form:

• Username: apikey (literal string)
• Email: your SendGrid login email
• Password: the API key you just copied

Click Save.

Step 5: Enable 2FA on SendGrid

SendGrid requires two-factor authentication for sender accounts. Enable it in your SendGrid security settings.

Step 6: Verify your sender identity

SendGrid will reject mail from unverified senders. In SendGrid, go to Sender Authentication > Single Sender Verification and verify the address you'll send from.

Step 7: Reconnect in Sparkforge

Click Save again on the SendGrid integration. SendGrid now appears as your active SMTP provider.

Fixing the 550 verified sender error

If a test email returns:

550 The from address does not match a verified Sender Identity.

Click the red triangle icon in the conversation for full error details. The fix:

• Make sure the masked sender email matches the SMTP-integrated email, or
• Verify the masked sender address in SendGrid as a single sender or via domain authentication.