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Connect SendBlaster to mySMTP

How to Configure mySMTP as Outgoing SMTP in SendBlaster

This setup will enable you to send newsletters or bulk email campaigns through mySMTP SMTP relay directly from SendBlaster on your desktop.

Step 1: Launch SendBlaster

  1. Open SendBlaster on your computer.
  2. Click on the top tab: Send.
  3. Then click Settings (gear icon or in the left-hand menu).

Step 2: Open SMTP Settings

  1. Go to the SMTP Servers tab.
  2. Click Add new SMTP configuration or Edit current server.

Step 3: Enter mySMTP SMTP Configuration

Fill out the fields with the following settings:

FieldValue
SMTP Server relay.xx.xxx (from setup email)
SMTP Port 587
Use Authentication Yes
Username Your full mySMTP username
Password Your mySMTP password
Connection Security STARTTLS or TLS
Sender Email e.g., This email address is being protected from spambots. You need JavaScript enabled to view it.
Sender Name Your business or brand name
  1. Click Save to store your settings.

🧪 Step 4: Test the SMTP Connection

  1. From the Send tab, try sending a test email.
  2. If successfully delivered, your SMTP setup is correct.

🛡️ Additional Tips

  • ✅ Use a domain with SPF, DKIM, and DMARC properly set up.
  • ❌ Do not use free/public domains like Gmail/Yahoo for the sender address.
  • 💡 Use throttling if you're sending to large lists (e.g., 1 email/sec).