with the skill
**Yes. Don’t launch at 600/day on Monday.** Two brand-new domains, two inboxes, and an 18-month-old list create a high risk of bounces, spam placement, and damaged domain reputation.
Here’s what to change before sending:
### 1. Delay and ramp gradually
Your plan puts **300 emails per inbox per day** through inboxes created yesterday. That’s far too aggressive.
Allow roughly **3–4 weeks for setup and gradual ramp-up**, with legitimate correspondence first. Then start cold sends around **5–10 per inbox per day**, increasing only if delivery and reply quality hold up. Warmup tools aren’t a guarantee of inbox placement.
### 2. Rebuild and verify the list
An 18-month-old vendor list isn’t send-ready. People have changed jobs, addresses have expired, and company needs have changed.
- Refresh employment, role, company, and relevance.
- Verify addresses immediately before upload, even if the vendor originally verified them.
- Exclude invalid addresses and handle catch-all results cautiously.
- Apply all previous opt-outs and suppression lists.
- Check applicable marketing/privacy rules for recipients’ locations. A purchased address isn’t evidence of consent.
**Aim for bounces under 1%; pause and investigate if they exceed 2%.** Verification reduces bounce risk, but doesn’t establish relevance or permission.
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### 3. Authenticate both domains
Before any campaign, confirm:
- **SPF, DKIM, and DMARC** are configured and aligned.
- The secondary domains clearly represent your business and redirect to your main site.
- Sender identities and signatures are accurate.
Keep cold outreach off the primary domain used for customer communications.
### 4. Recalculate capacity
At a conservative planning range of **20–30 total sends per inbox per day**, 600 daily sends would take roughly **20–30 established inboxes**, typically spread across **7–15 domains** at 2–3 inboxes per domain.
That’s a planning estimate, not a safe-volume guarantee. Provider limits and actual inbox placement may require less. **Follow-ups count toward the 600.** Don’t buy more inboxes simply to force Monday’s deadline.
### 5. Launch a small, targeted pilot
Start with a freshly verified, tightly matched segment rather than the whole list.
- Use short, plain-text emails with one relevant offer.
- Turn off open and click tracking.
- Avoid links and attachments in the first touch.
- Include an easy opt-out and your postal address.
- Test inbox placement before launch.
- Track bounces, positive replies, and meetings, not opens.
- Stop all automated follow-ups when someone replies; honor opt-outs across channels.
**For Monday, make the goal “authentication complete, list refreshed, pilot ready,” not “600 emails sent.”** Scale only after the smaller campaign demonstrates healthy delivery and genuine interest.