Hi @Oleh , You are not in anyway wrong! smart sending together with frequent campaigns is likely the main reason for the skips. When someone gets a campaign within the smart sending window usually some hours by default, they are automatically skipped from flow emails like your viewed product one.
Now for you to fix this, you can either 1. Turn off smart sending for the second email in the flow so it always sends, or 2. Space out your campaigns more so there's less overlap, especially on days flows are active. Although option one is the fastest fix and won't harm your list if your emails are relevant, I would recommend starting with that
Hi @Oleh ,
You're exactly right Smart Sending plus frequent campaigns is the likely cause of those skips. Since Smart Sending blocks emails if someone recently got another one, your flow emails are getting suppressed.
Quick fix: Turn off Smart Sending for the second flow email. If it's relevant and well-timed, it won’t annoy subscribers.
Optional: Also consider spreading out campaigns to reduce overlap.
Hope that helps! IF NEED MORE HELP KINDLY REACH OUT
Micheal
Hi @Oleh ! 
You’re spot on — Smart Sending + frequent campaigns can absolutely result in flow emails getting skipped, especially when subscribers fall within the Smart Sending window (16 hours by default). A few suggestions to help:
1. Disable Smart Sending for Critical Flow Emails
For high-priority automations like Browse Abandonment or Viewed Product, I recommend turning off Smart Sending (at least for the first few emails). These are time-sensitive, and skipping them can hurt conversion.
2. Use Smart Sending selectively
You can keep it on for later flow messages (like follow-ups) but allow the initial, higher-converting touch points to bypass that filter.
3. Adjust Send Windows on Campaigns
If you’re sending 3 campaigns per week, try scheduling them on days when fewer flow messages go out, or space them outside the 16-hour Smart Sending window.
4. Test With a Segment
Create an A/B test with Smart Sending on vs. off for a specific flow. That way you can quantify the impact without fully committing to turning it off.
Hi there,
Thanks so much for your help.
