Before you launch your first cold email or warm-up sequence, you’ll need to connect a sender account. Sparkle.io makes this easy with a smooth, step-by-step workflow that anyone can follow. You can connect Gmail, Outlook, or any custom SMTP/IMAP account in just a few clicks. There are no complicated configurations or technical headaches to slow you down. Once connected, you’ll be ready to send with full authentication and deliverability confidence. Get set up in minutes and focus on what matters most — reaching and converting your prospects.
Step 1: Navigate to Sender Accounts and Click “Add Sender.”
At the top right, click the + Add Sender button.
You’ll be asked to choose your provider:
Google (Gmail or Workspace)
Microsoft (Outlook / Office 365)
SMTP / IMAP (for custom or business email setups)
Step 2: Authenticate the Email Account
Depending on the provider:
Google / Outlook: You'll be redirected to a secure login window. Sign in and grant necessary permissions.
SMTP / IMAP: Input your server, port, and login credentials manually. Make sure these are accurate.
Step 3: Connect sender account
After selecting your email provider, Sparkle will guide you through the setup. Here's how each connection type works:
3.1 Connecting a Gmail Account (Google Workspace or Gmail)
Choose Gmail from the provider list.
Click Continue with Google.
A Google OAuth pop-up will appear — log into the account you want to connect.
Grant Sparkle permission to send and read emails on your behalf.
Once authenticated, you’ll be redirected back to Sparkle with your Gmail connected.
3.2 Connecting via SMTP/IMAP (Single Sender Account)
Select SMTP/IMAP as your provider.
Manually enter your email address, SMTP server, IMAP server, ports, and credentials.
Click Verify & Save.
Sparkle will run a connection check to validate the details.
3.3 Adding Multiple SMTP Accounts (Bulk Upload)
Click the Bulk Add Senders tab in the SMTP setup screen.
Download the sample CSV template.
Fill in email addresses, SMTP/IMAP details, and passwords in the template.
Upload the CSV file.
Sparkle will automatically validate and connect each account.
Step 4: Start Sending or Warming Up
Once your sender account is connected and configured, you’re ready to either:
If Sender is Oauth they will be prompted to setup client ID in Admin settings
Start Email Warm-Up: If enabled, Sparkle will begin gradually sending warm-up emails to build trust with email providers.
Launch Your First Campaign: Use your verified sender account in Sparkle’s campaign builder to reach out to your leads.
Monitor Status: Keep an eye on sending limits, reply tracking, and bounce rates under the Sender Accounts dashboard.
Pro Tips for Successful Sending
Warm Up Before You Scale: Always allow 2–3 weeks of warm-up before sending cold outreach at scale.
Rotate Senders: If you're sending high volumes, connect multiple sender accounts to spread load and avoid domain fatigue.
Monitor Reputation: Regularly check open, click, and bounce rates to keep your domain reputation strong.
Why Add Senders in Sparkle.io?
Flexible Setup – Connect Gmail, Outlook, or SMTP accounts — single or bulk.
Warm-Up Built In – Automated warm-up helps protect your domain.
Custom Controls – Limit sending, monitor replies, and manage multiple identities.
Optimized Deliverability – Sparkle guides you with DNS setup, best practices, and live feedback.
Final Thoughts
Adding and verifying a sender account is the foundation of successful outreach in Sparkle.io. With intuitive setup, warm-up automation, and real-time status insights, Sparkle makes it simple to prepare your sender domain for high-converting email campaigns.
Ready to start sending?
Head to your dashboard and add your first sender today.
Happy sending — Team Sparkle ✨