Skipping domain authentication   

1. Emails are visibly sent from "via zcsend.net".
   
2. They encounter lower inbox placement.
   
3. They result in trust issues in Gmail or Outlook.
   

1. Add and verify your sending domain inside Zoho Campaigns before launching your first campaign.
   
2. Configure SPF and DKIM records in your domain's DNS settings.
   
3. Wait for verification confirmation before sending in bulk.
   
4. Run a small test campaign after setup to confirm proper alignment.
   

Campaign moves back to draft after sending   

1. Your sender email is verified.
   
2. Authentication (SPF/DKIM) is properly configured.
   
3. You've reviewed the campaign checklist inside the editor carefully.
   

Uploading large or unclean contact lists without preparation   

1. Importing thousands of old or inactive contacts at once
   
2. Sending to contacts who haven't engaged in a long time
   
3. Including duplicate entries
   
4. Not removing bounced or inactive addresses
   

1. Low open and click rates
   
2. Higher bounce rates
   
3. Increased spam complaints
   
4. Poor sender reputation
   

1. Start with your most engaged contacts.
   
2. Gradually increase volume over time.
   
3. Remove duplicates and inactive addresses.
   
4. Segment your contacts based on engagement before sending.
   

Open rates show zero (especially in Gmail)

1. Gmail (especially with image blocking)
   
2. Privacy-focused email settings
   
3. Apple Mail privacy protection
   

1. Send internal test emails to see if tracking pixels are functioning.
   
2. Use A/B tests to validate subject line performance rather than judging from one send.
   
3. Compare trends over a period of time instead judging from one campaign.
   

Automation doesn't trigger for everyone   

1. Contacts must meet the trigger conditions.
   
2. They must enter the workflow at the correct stage.
   
3. Timing filters and status settings matter
   

1. Test the workflow using a sample contact before activating it fully.
   
2. Double-check entry criteria and filter rules.
   
3. Review contact status and segmentation settings.
   
4. Use the workflow report to confirm whether contacts entered the automation.
   

Not testing across devices and email services 

1. Break in emails formatting/structure.
   
2. Stack oddly on mobile displays.
   
3. Misalign buttons.
   

1. Gmail
   
2. Outlook
   
3. Mobile devices
   

Ignoring spam score or content red flags 

1. Using heavy promotional language like "BUY NOW," "LIMITED OFFER," or excessive exclamation marks
   
2. Writing subject lines that feel overly aggressive or misleading
   
3. Including too many links in a short email
   
4. Using shortened URLs
   
5. Designing image-only emails with very little supporting text
   
6. Embedding large attachments directly in the campaign
   

1. Maintain a healthy balance between text and images.
   
2. Keep links purposeful and minimal.
   
3. Avoid excessive capitalization and exaggerated claims.
   
4. Write subject lines that are clear rather than sensational.
   
5. Test-send and review how the email appears in different inboxes.