Email Warmup Timeline: A Day-by-Day Schedule from Setup to First Campaign

TL;DR

• Total timeline: 28-35 days from domain purchase to first campaign send (with margin of safety)
• Phase 1 (Days 1-3): Domain purchase, DNS setup, authentication, and Google Workspace configuration
• Phase 2 (Days 4-7): Start warmup at low volume (5-10 emails/day), begin building prospect list
• Phase 3 (Days 8-21): Ramp warmup volume, write templates, verify prospect list
• Phase 4 (Days 22-28): Start campaigns at low volume alongside warmup, monitor closely
• Ongoing: Never stop warmup. Maintain 30-50% warmup ratio alongside campaigns indefinitely.

Phase 1: Infrastructure Setup (Days 1-3)

Day 1: Domain Purchase and DNS

• Morning: Purchase 3 secondary domains from Namecheap or Cloudflare ($10-15 each)
• Morning: Set up Google Workspace accounts for each domain ($7/month per mailbox)
• Afternoon: Configure DNS records for each domain:
  • SPF: v=spf1 include:_spf.google.com ~all
  • DMARC: v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com
  • MX records (auto-configured by Google Workspace)
• Evening: Set up basic landing pages on each domain (even a single page with your company name and contact info)

Day 2: Authentication and Verification

• Morning: Enable DKIM in Google Workspace Admin Console for each domain (Admin → Apps → Gmail → Authenticate email)
• Morning: Add DKIM CNAME records to DNS
• Afternoon: Send test emails to mail-tester.com from each mailbox. Target score: 9/10 or higher.
• Afternoon: Verify SPF, DKIM, and DMARC all pass using MXToolbox
• Evening: Set up Google Postmaster Tools for each domain

Day 3: Email Client Setup

• Morning: Configure professional email signatures for each mailbox (name, title, company, phone, website)
• Morning: Add profile photos to each Google Workspace account
• Afternoon: Send and receive test emails between your mailboxes and personal email to establish basic activity
• Afternoon: Connect all mailboxes to WarmySender

Phase 2: Warmup Initiation (Days 4-7)

Day 4: Start Warmup

• Activate warmup on all mailboxes in WarmySender
• Initial volume: 5-10 warmup emails per mailbox per day
• Begin building your prospect list (use this waiting time productively)

Days 5-7: Monitor and Build

• Check warmup dashboard daily: Are emails being opened? Replied to? Moved from spam to inbox?
• Warmup volume auto-increases to 10-15 per day by end of week 1
• Continue list building: Aim for 500+ verified prospects by Day 21
• Start writing email templates (you'll refine these in Phase 3)

Phase 3: Warmup Ramp and Campaign Prep (Days 8-21)

Days 8-14: Acceleration

Day	Warmup Volume/Mailbox	Total (3 mailboxes)	Parallel Activity
8	15	45	Write first email template
9	18	54	Write follow-up templates
10	20	60	Verify first batch of emails
11	22	66	Test templates with colleagues
12	25	75	Finalize prospect segmentation
13	27	81	Set up campaign in WarmySender
14	30	90	Run Mail-Tester check on each mailbox

Days 15-21: Maturation

• Warmup stabilizes at 30-40 emails per mailbox per day
• Check Google Postmaster Tools: Domain reputation should be "Medium" or "High" by now
• Run an inbox placement seed test to verify Gmail/Outlook delivery
• Finalize and verify your full prospect list (remove invalid, catch-all, and role-based addresses)
• A/B test subject lines using small test batches (50 prospects per variant)

Phase 4: Campaign Launch (Days 22-28)

Day 22: Readiness Checklist

Before sending your first campaign, verify every item:

1. Authentication: SPF, DKIM, DMARC all passing (Mail-Tester score 9+)
2. Google Postmaster: Domain reputation at Medium or High
3. Warmup metrics: 40%+ open rate, 15%+ reply rate on warmup emails
4. Prospect list: 100% verified, segmented by ICP, personalization data added
5. Templates: Tested, under 100 words, with spintax for variation
6. Unsubscribe: Text-based opt-out in every email

Days 22-24: Soft Launch

• Send to 10-15 new prospects per mailbox per day (30-45 total)
• Continue warmup at full volume (30-40 per mailbox)
• Monitor bounce rate, spam complaints, and open rates daily

Days 25-28: Scale Up

• If Day 22-24 metrics are healthy (bounce under 2%, no complaints), increase to 20-25 new prospects per mailbox
• Begin tracking reply rates and positive reply rates
• Respond to all replies within 2 hours

Ongoing Maintenance (Day 29+)

• Daily: Check for replies, monitor Google Postmaster spam rate
• Weekly: Review campaign metrics, run Mail-Tester, check blacklists
• Monthly: Re-verify prospect database, review and refresh templates
• Always: Keep warmup running at 30-50% of total volume

This 28-day timeline might feel slow when you're eager to start generating pipeline. But every day of proper setup and warmup compounds into better deliverability, higher reply rates, and more meetings per email sent. The teams that rush past warmup spend months recovering from reputation damage that the teams who followed the timeline never experienced.