How to Use Instantly for Cold Email: Complete 2026 Tutorial

By Puzzle Inbox Team · May 20, 2026 · 10 min read

Step-by-step Instantly tutorial covering setup, sequence creation, inbox connection, sending, and reply management for cold email campaigns.

Instantly Cold Email Tutorial Overview

Instantly is the dominant cold email sending platform with 50,000+ users. This tutorial walks through the complete workflow from account setup to first cold email campaign launch.

Step 1: Sign Up for Instantly

Visit instantly.ai. Choose Growth plan ($30/month) for getting started. Create account, verify email.

Step 2: Connect Cold Email Inboxes

Settings → Email Accounts → Add Account. Two connection methods:

OAuth (Recommended)

Click "Add Google" or "Add Microsoft" → OAuth flow → grant permissions → connected.

SMTP/IMAP

For non-OAuth providers: enter SMTP server, port, app password (with 2FA enabled). Click test connection.

Pre-warmed inboxes from Puzzle Inbox work with both methods. OAuth recommended for stability.

Step 3: Configure Sending Limits

Per inbox: 15-20 emails/day for cold email. Set this in inbox settings to prevent over-sending.

Step 4: Set Up Warmup (If Self-Warming)

Instantly includes free built-in warmup network. Toggle warmup on per inbox. Pre-warmed inboxes can skip this.

Step 5: Build Prospect List

Two options:

• Upload CSV: Apollo or other data tool export → upload to Instantly
• SuperSearch (Instantly bundled): Built-in 450M+ contact database. Search by ICP filters.

Verify emails before adding to campaigns. Use Bouncer or Instantly's built-in verification.

Step 6: Create First Campaign

Campaigns → New Campaign:

1. Name campaign
2. Upload prospect list
3. Add email steps (subject, body, delay between)
4. Add personalization variables ({{firstName}}, {{companyName}})
5. Set sending schedule (Tue/Thu 9am-5pm prospect timezone)
6. Connect to inboxes (rotates automatically)

Step 7: Write Cold Email Sequence

Recommended structure:

• Email 1: Specific relevance hook + value prop + soft CTA. Under 80 words.
• Email 2 (3 days later): Value-add follow-up with case study or proof point
• Email 3 (5 days later): Different angle on value proposition
• Email 4 (7 days later): Breakup email with easy out

Step 8: A/B Test Variants

Test 2-3 subject lines per campaign. Test sequence length, CTA wording, send time.

Step 9: Launch and Monitor

Click "Launch Campaign." Monitor:

• Reply rate (target 3-5%+)
• Bounce rate (target under 2%)
• Inbox health metrics
• Replies in Unibox (Instantly's reply management)

Step 10: Reply Management with Unibox

Instantly Unibox aggregates replies across all connected inboxes. AI auto-classifies replies as interested, objection, unsubscribe, etc. Route to sales for positive replies.

Common Instantly Mistakes

• Connecting too few inboxes for desired volume
• Disabling warmup (continuous warmup needed)
• Long sequences with no value-add follow-ups
• Hard CTAs in first email (lower reply rates 3x)
• Not verifying emails before sending (high bounces)

Instantly + Pre-Warmed Inboxes

Pre-warmed inboxes from Puzzle Inbox connect to Instantly via OAuth in minutes. Skip 2-3 weeks of warmup. Begin sending immediately. Outlook at $0.35/inbox or Google Workspace at $3-4.50/inbox.