Best Cold Email Outreach · head-to-head
Instantly vs Mailshake
A sourced, side-by-side comparison for cold email outreach. Mailshake has the lower entry price. Every figure links to the vendor's own page and the date we captured it.
At a glance
- Price: Instantly $47/mo vs Mailshake $25/mo — Mailshake is cheaper to start.
- Free tier: Instantly No; Mailshake No.
- HIPAA: Instantly —; Mailshake —.
Side by side
| Instantly | Mailshake | |
|---|---|---|
| Entry price | $47/mo (Growth (Outreach)) | $25/mo (Starter) |
| Free tier | No | No |
| HIPAA (BAA) | — | — |
| SOC 2 | — | — |
| GDPR | — | — |
| Best for | High-volume cold email at agency or startup scale | Small sales teams wanting email + built-in calling in one tool |
Sources — Instantly: instantly.ai (verified 2026-06-14). Mailshake: mailshake.com (verified 2026-06-14).
Key features
Instantly: Unlimited email accounts and warmup on all plans; 450M+ B2B lead database with 13 filtering options (Bundle plans); AI Sales Agent, AI Reply Agent, Web Researcher Agent (Bundle plans); Unified inbox (Unibox) across all connected mailboxes; A/Z split testing and deliverability reputation protection
Mailshake: SHAKESpeare AI email writer with copy generation; Built-in power dialer with unlimited North American minutes (Sales Engagement+); Data Finder for prospect identification by role, location, company; Lead Catcher unified inbox with lead management workflows; Mail merge with A/B testing and deliverability optimization