Quick Answer
What do you need to connect SendGrid?
Create an API key in SendGrid, verify the email address you plan
to use as your sender, then go to
Settings → Email Services → Add Service → SendGrid
in BizStackPro. Use apikey as the username, paste the
SendGrid API key as the password, complete the remaining fields,
and save the integration.
Sending Emails Reliably With a Dedicated SMTP Provider
SendGrid can be connected to BizStackPro as an SMTP service using an API key.
The setup also requires a verified sender identity. If the email address used as the From address is not verified in SendGrid, sending can fail with errors such as the 550 Sender Identity error.
This guide covers the API-key setup, BizStackPro connection, sender verification, and common troubleshooting checks.
Two pieces must be correct
The SendGrid API credentials must be entered correctly, and the email address used for sending must match a verified sender identity in SendGrid.
SendGrid Setup at a Glance
Before You Begin
Make sure you have the SendGrid access and sender information needed to complete the connection.
- Have access to your SendGrid account.
- Choose the email address you plan to use as your From sender.
- Be prepared to verify that sender identity inside SendGrid.
- Store the generated API key securely after creating it.
- Confirm you can access BizStackPro Email Services settings.
Step 1: Create an API Key in SendGrid
Step 1: Sign In to SendGrid
Log in to your SendGrid account.
Step 2: Open API Keys
Go to Settings → API Keys.
Step 3: Create the API Key
Select Create API Key.
Step 4: Set the Permissions
Set the permissions to Full Access, or the level required for SMTP sending.
Step 5: Copy the API Key
Copy the generated API key and store it safely. You will paste this value into BizStackPro.
Treat the API key like a password
If the API key is exposed, revoke it in SendGrid, create a new key, and update the BizStackPro integration.
Step 2: Connect SendGrid to BizStackPro
Step 1: Open Email Services
In BizStackPro, go to Settings → Email Services.
Step 2: Add SendGrid
Select Add Service and choose SendGrid.
Step 3: Enter the Username
Enter apikey in the
Username field.
Step 4: Enter the Email
Enter your SendGrid login email, or the email required by your SendGrid setup.
Step 5: Enter the API Key
Paste the API key you created in SendGrid into the Password field.
Step 6: Save the Integration
Select Save to complete the connection.
Follow along
BizStackPro → Settings → Email Services → Add Service → SendGrid → enter the API credentials → Save.
Step 3: Verify Your Sender Identity
SendGrid requires the From email address to match a verified sender identity.
If the address used for sending is not verified, SendGrid may reject the message with a sender identity error.
Step 1: Open Sender Identity Settings
In SendGrid, locate the Sender Identity settings.
Step 2: Add the Sender Email
Add the email address you plan to use as the From address and complete SendGrid's verification process.
Step 3: Use the Same Address in BizStackPro
Make sure the sender email used in BizStackPro matches the verified sender identity in SendGrid.
Common 550 Sender Identity error
“550 The from address does not match a verified Sender Identity” usually means the email address being used as the sender has not been verified in SendGrid.
Troubleshooting Checklist
apikey.
SendGrid SMTP Best Practices
Frequently Asked Questions
What is an API key and why do I need it?
How do I create an API key in SendGrid?
What should I do if my sender email is not verified?
Why is two-factor authentication (2FA) important?
How can I resolve the 550 Sender Identity error?
Continue Learning
Continue with related Email & SMTP guides for third-party SMTP services, sending domains, authentication, and deliverability.
