Warm Domains
Cold Email Metrics & Analytics2 min read·2026-12-22

How to Use Instantly for Cold Email Sending

Instantly is one of the most popular cold email sending platforms. Here is how to use it effectively.

Instantly is one of the most popular cold email sending platforms. Here is how to use it effectively.

Instantly's core features

Unlimited email account connections. Automatic inbox rotation across connected accounts. Built-in warmup (Instantly's warmup network). Campaign creation with sequence builder. A/B testing. Unified inbox for reply management. Analytics dashboard.

Setting up Instantly

Step 1: Connect your email accounts (Google Workspace or Microsoft 365). Each account connects via OAuth or app password. Step 2: Enable warmup for all accounts. Configure warmup settings (daily warmup volume, ramp rate). Step 3: Create a campaign. Upload your prospect list. Write your email sequence with variables and Spintax. Step 4: Configure sending settings — emails per day per account, sending window, time zone targeting, and tracking preferences. Step 5: Launch the campaign.

Instantly best practices

Keep per-account daily volume at 30 to 40 total (warmup + campaigns). Use Spintax extensively to create content variation. Disable open tracking for maximum deliverability. Use a custom tracking domain if you enable any tracking. Set sending windows to match your prospects' business hours.

Instantly and Warm Inboxes

Accounts from Warm Inboxes come pre-warmed and ready to connect to Instantly. This skips the 14 to 21 day warmup period and lets you launch campaigns immediately.


Need pre-warmed inboxes ready to send today? Warm Inboxes includes free .com domains and 24/7 support. Used by agencies doing 10,000+ emails per day. Check your deliverability free →

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