High-Deliverability Inboxes for Instantly.ai
Supercharge your Instantly campaigns. Provision secondary domains with 3 dedicated inboxes per domain, automated 2048-bit DKIM, SPF, DMARC, and 1-click bulk CSV import.
Instantly.ai provides the campaign sequences and warm-up network; Send Coldy provides the bulletproof infrastructure. Export pre-formatted CSVs directly into Instantly's bulk uploader with zero 2FA roadblocks and isolated sender scores.
Import 45+ Inboxes into Instantly in 60 Seconds
Deploy Domains on Send Coldy
Select your tier (e.g. Starter, Growth, or Scale). 3 inboxes per domain are generated with clean IP routing and full DNS authentication.
Export Instantly CSV
Click "Export for Instantly". You get a pre-mapped CSV ready for Instantly's bulk uploader (Host, SMTP Port 587, IMAP Port 993, SSL).
Upload to Instantly & Warm Up
In Instantly, go to Email Accounts > Add New > Any Provider (IMAP/SMTP) > Bulk Upload CSV. Enable warm-up with 1 click.
Instantly Warmup Compatible
Send Coldy accounts are fully compatible with Instantly's peer-to-peer warm-up network. Warm up 15, 45, or 105 inboxes simultaneously.
Dedicated Custom Tracking Domains
Avoid shared Instantly tracking pixel blacklists. Send Coldy sets up track.yourdomain.com with SSL automatically.
Fractional Cost vs Google
Cut your Instantly email account costs from $7.20/mo down to ~$2.30/mo. Scale to thousands of prospects without blowing your budget.