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QuickMail vs Instantly.ai
A side-by-side on the dimensions that decide cold-email deliverability: how you pay, whether there’s an API and an MCP server, how warming is handled, whether reputation auto-pauses, and whether processing is data-residency aware.
| Capability | QuickMailAgency cold-email sequencer | Instantly.aiAgency sequencer |
|---|---|---|
| Pricing model | Per-plan (email volume) | Per-plan (unlimited inboxes) |
| Price from | ~$9/mo | ~$37/mo |
| API access | Partial / UI-shaped | Partial / UI-shaped |
| MCP server (AI agents) | Not verified | Yes — verified capability |
| Managed warmed pool | Built-in (MailFlow, free) | Shared pool |
| Reputation circuit-breaker | No | No |
| Data-residency routing | No | No |
| Best for | Lead-gen agencies that want cheap entry pricing plus automated mailbox rotation. | Agencies and high-volume senders who live in a sending UI. |
Pricing and capabilities are approximate and change frequently — verify on each vendor’s site before you decide. Product and brand names belong to their respective owners.
QuickMail
~$9/moAn agency-oriented cold-email sequencer with free built-in warmup (MailFlow) and automatic sender rotation away from underperforming mailboxes.
Strengths
- MailFlow warmup is bundled free on every plan, including a standalone warmup-only option.
- Smart Sender Groups automatically swap out a mailbox when its deliverability declines and rotate to a healthier one.
- Low entry price with unlimited team members on every tier.
Instantly.ai
~$37/moA popular UI-first cold-email platform for agencies, with unlimited mailboxes and a large shared warmup network.
Strengths
- Large shared warmup network and unlimited connected inboxes.
- Bundled B2B lead database and done-for-you domain add-ons.
- Mature campaign UI familiar to the agency crowd.
Skip the sequencer. Send through the deliverability layer.
A managed warmed pool, an automatic reputation circuit-breaker, and per-send pricing — no per-seat tax.