Instantly vs Quartz (2026)
A side-by-side comparison of Instantly and Quartz on pricing, features, and fit, so you can decide which is right for you.
Quick answer
Instantly and Quartz are both strong choices, but they fit different needs. Choose Instantly if you mainly need b2b sales teams running cold outreach campaigns to generate qualified pipeline — its edge is supports unlimited email accounts, making it cost-effective for high-volume senders. Choose Quartz if you need managing a high-volume inbox without losing focus on priority messages — its edge is strong privacy guarantee because all ai processing happens on your mac. Instantly starts at $37/month for the Growth plan; Quartz starts at Paid plans estimated starting around $10 per month.
Features compared
- Unlimited email account connections with automated warm-up to protect sender reputation
- AI-assisted email copy and sequence builder for personalized outreach campaigns
- Built-in B2B lead database with millions of verified contacts for prospecting
- Detailed campaign analytics tracking open rates, reply rates, and conversions
- Local on-device AI processing for full email privacy
- AI-powered inbox triage and smart message prioritization
- Automated email drafting and reply suggestions
- Thread summarization to quickly catch up on long conversations
Pros & cons
- Supports unlimited email accounts, making it cost-effective for high-volume senders
- Built-in email warm-up reduces spam risk and improves deliverability significantly
- Clean and intuitive interface makes campaign setup fast even for non-technical users
- Advanced features like the lead database require higher-tier paid plans
- Deliverability success still depends on the quality of email copy and targeting
- Strong privacy guarantee because all AI processing happens on your Mac
- Clean, focus-oriented interface that reduces inbox overwhelm
- No reliance on cloud servers means faster responses and offline capability
- Currently limited to Mac users, excluding Windows and Linux audiences
- As a newer tool, it may lack the deep integrations found in established email clients
The verdict
Choose Instantly if
you mainly need to b2b sales teams running cold outreach campaigns to generate qualified pipeline. Its edge: supports unlimited email accounts, making it cost-effective for high-volume senders.
Choose Quartz if
you mainly need to managing a high-volume inbox without losing focus on priority messages. Its edge: strong privacy guarantee because all ai processing happens on your mac.
Frequently asked questions
Is Instantly better than Quartz?
Neither is universally better. Instantly is stronger for b2b sales teams running cold outreach campaigns to generate qualified pipeline, with an edge in supports unlimited email accounts, making it cost-effective for high-volume senders. Quartz is stronger for managing a high-volume inbox without losing focus on priority messages, with an edge in strong privacy guarantee because all ai processing happens on your mac. Pick based on your main task.
Which is cheaper, Instantly or Quartz?
Instantly starts at $37/month for the Growth plan and Quartz starts at Paid plans estimated starting around $10 per month. Free tier: Instantly — Free trial available with limited sending volume; Quartz — Basic local AI email features available at no cost.
What is Instantly best for?
Instantly is best for b2b sales teams running cold outreach campaigns to generate qualified pipeline, lead generation agencies managing multiple client outreach campaigns from one dashboard, founders and solopreneurs automating prospecting to book discovery calls without manual effort.
What is Quartz best for?
Quartz is best for managing a high-volume inbox without losing focus on priority messages, drafting professional email replies quickly using ai suggestions, keeping sensitive business communications private by processing everything locally.
Do Instantly and Quartz have free plans?
Instantly: Free trial available with limited sending volume. Quartz: Basic local AI email features available at no cost. Check each tool's pricing page for current limits, as plans change.