Who This Is For / When to Use
Use this article if you want to send emails from Kyrios using a Gmail or Google Workspace account and need to authenticate via Gmail SMTP.
Important Notes (Read Before You Start)
Gmail requires 2-Step Verification to create app passwords.
The legacy "Allow less secure apps" option is no longer supported.
As of 2024, free email providers (Gmail, Yahoo, Outlook.com) are not recommended for bulk sending.
For high-volume or business email, use Google Workspace or Microsoft 365 with a custom domain.
Users in the Philippines may need a VPN when connecting to Gmail SMTP.
Step 1: Confirm You Are Logged Into the Correct Google Account
Go to google.com.
Click your profile icon in the top-right corner.
Confirm the email address you plan to connect to Kyrios.
4. Click Manage your Google Account.
Step 2: Open Google Account Security Settings
In the left-hand menu, click Security.
Step 3: Enable 2-Step Verification (If Not Already Enabled)
Scroll to How you sign in to Google.
Click 2-Step Verification.
Enter your Google account password.
4. Follow Google’s instructions to complete setup.
If you do not see App passwords, 2-Step Verification is not enabled.
Step 4: Create a Gmail App Password
From Security, click App passwords.
Re-enter your Google account password.
Under App name, enter a label such as
SMTPorKyrios Email.Click Create.
Copy the 16-character app password shown.
Save this password securely. You will use it in Kyrios.
Step 5: Open Email Services in Kyrios
In Kyrios, click Settings (bottom-left).
Go to Email Services.
Click Add Service.
Step 6: Add Gmail as Your SMTP Provider
Select Gmail as the SMTP provider.
Enter your full Gmail email address.
Paste the app password from Step 4 into the Password field.
Click Save.
Sending Best Practices (Critical for Deliverability)
The From Email must exactly match the Gmail account used in SMTP.
Do not mix Gmail addresses.
Gmail flags mismatched sender emails as spoofing.
Gmail Sending Limits
Free Gmail: 500 emails per rolling 24 hours
Google Workspace: 2,000 emails per rolling 24 hours
Each recipient counts as one email.
Common Issues and Fixes
App Passwords Not Visible
Ensure 2-Step Verification is enabled.
Sign in with the correct Google account.
Emails Going to Spam
Match SMTP email and From Email.
Avoid bulk sending from free Gmail.
Use a custom domain with SPF, DKIM, and DMARC.
SMTP Connection Issues (Philippines)
Connect using a VPN.
Professional Email Requirement (2024+)
Google and Yahoo require stricter authentication for bulk sending:
SPF
DKIM
DMARC (_dmarc record required)
Free email accounts cannot configure these properly.
FAQs
Why is an app password required?
App passwords allow secure third-party access when 2-Step Verification is enabled.
Can I reuse the same app password?
Yes, but creating a dedicated password per integration is recommended.
Does sending to multiple recipients count once?
No. Each recipient counts toward daily limits.