Configure each mailbox with a clear naming strategy, strong credentials, and active monitoring to keep your sending reputation healthy from day one.

Configuration

1. Always use a proper mailbox naming strategy

Don't create random or inconsistent emails.

Good examples

  • john@company.com
  • sales@company.com

Bad examples

  • john123@company.com
  • test1@company.com

Why it matters

  • Improves trust with recipients
  • Helps SPF/DKIM alignment consistency
  • Easier for scaling SaaS / teams

2. Force strong password policy

When creating mailbox:

  • Use minimum 8-20 characters
  • Include upper/lowercase + numbers + symbols
  • Avoid reused passwords across mailboxes

Best practice

  • Use password generator
  • Rotate passwords for admin / high-risk mailboxes every 60-90 days

3. Configure identity + display name properly

Inside mailbox identity:

  • Full Name: John Smith
  • Avoid generic names like "Admin" or "User"

Why

  • Increases email open rates
  • Reduces spam suspicion
  • Improves branding trust

4. Monitor first 7 days after creation

For new mailboxes:

Track:

  • Sent volume spikes
  • Bounce rate
  • Spam complaints
  • Login locations

If anything abnormal

  • Lock mailbox immediately
  • Rotate password