11x vs Reply.io: Sales Engagement Platform vs Cold Email Platform Comparison
Compare 11x (sales engagement platform) and Reply.io (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
11x is a sales engagement platform built for multi-channel outreach across email, phone, and social, using AI workers Alice for outbound and Julian for inbound. Reply.io is a cold email platform with unlimited warmup and a 1 billion contact database, priced from $59/mo. Many teams use both together.
Key takeaways
- Reply.io publishes an entry price of $59/mo, while 11x uses custom pricing across all its plans.
- Reply.io lists four pricing tiers: Email Volume, Multichannel, Agency Core, and AI SDR Starter, the last priced at $800/mo.
- 11x has three pricing tiers: Growth, Pro, and Enterprise, all requiring buyers to contact sales for a quote.
- Both platforms list AI personalization as a shared capability, but 11x lists multi-channel sequences and sequence builder while Reply.io lists unlimited email warmup and a 1 billion B2B contacts database.
- 11x integrates with Salesforce, HubSpot, Pipedrive, Zoho, Gmail, Slack, and G2, while Reply.io integrates with those same three CRMs plus Copper CRM, Zendesk Sell, Close, Zapier, Make, and n8n.
Reviewed and updated September 5, 2026
11x vs Reply.io: Sales Engagement Platform vs Cold Email Platform Comparison
Sales teams building an outbound stack often weigh 11x, a sales engagement platform for multi-channel sales outreach and engagement tracking, against Reply.io, a cold email platform for cold email outreach. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.
The Quick Answer
11x is a sales engagement platform for multi-channel sales outreach and engagement tracking; Reply.io is a cold email platform for cold email outreach. By each vendor's own wording, 11x lists multi-channel sequences and sequence builder, and Reply.io lists unlimited email warmup and 1 billion b2b contacts database.
Reply.io publishes an entry price of $59/mo; 11x uses custom pricing, so the two cannot be compared on list price.
If your priority is coordinating outreach across email, phone, and social channels, 11x is the one built for it; for sending campaigns that land in the inbox and generate replies, that is Reply.io. Many teams run one of each.
Understanding the Core Difference
11x is AI digital worker platform for pipeline generation, built around Alice for outbound and Julian for inbound. Alice runs multi-channel sequences with deep research and AI personalization, consented outbound calling and managed mailboxes, while Julian qualifies inbound leads across phone, chat, SMS and WhatsApp.
Reply.io is AI-powered sales engagement platform with 1B+ B2B contacts, multichannel sequences, and AI SDR capabilities.
Both platforms offer ai personalization. Where they diverge is in their approach to pricing tiers and advanced capabilities.
Pricing Comparison
Growth
Email Volume
11x Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Growth | Contact Sales | Up to 5 End Users; 2,000 New Prospects per Month | 11x Managed Gmail Mailboxes, including domain setup, warmup, inbox rotation and monitoring |
| Pro | Contact Sales | Up to 10 End Users; 5,000 New Prospects per Month | 11x Managed Gmail Mailboxes; Multi-language Outreach (105+) |
| Enterprise | Contact Sales | Unlimited End Users; 10,000+ Prospects per Month | 11x Managed Gmail Mailboxes; Custom Integrations + API |
Source: 11x Pricing
Reply.io Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Email Volume | $59/mo | 1,000 active contacts | Unlimited |
| Multichannel | $99/mo | Unlimited active contacts | Unlimited emails; 10 mailboxes |
| Agency Core | $210/mo | Unlimited clients & users | Unlimited mailboxes |
| AI SDR Starter | $800/mo | 1,000 active contacts | Unlimited mailboxes & warm-ups |
Source: Reply.io Pricing
Pricing Analysis
One or both platforms use custom or contact-based pricing for some tiers. Reach out to their sales teams for exact quotes based on your usage needs.
Reply.io offers 4 pricing tiers compared to 11x's 3, giving you more granularity as you scale.
Features Breakdown
- Multi-Channel Sequences
- Sequence Builder
- Smart Replies
- Multi-Lingual Outreach
- Consented Outbound Calling
- Deep Research
- and 2 more listed below
- AI Personalization
- Unlimited email warmup
- 1 billion B2B contacts database
- Anti-spam & deliverability suite
- LinkedIn automation (add-on)
- SMS and calls (add-on)
- AI SDR capabilities
- and 2 more listed below
11x Key Features
- Multi-Channel Sequences
- Sequence Builder
- Smart Replies
- Multi-Lingual Outreach
- Consented Outbound Calling
- Deep Research
- AI Personalization
- Signals and Triggers
- Deliverability & Mailbox Health
Reply.io Key Features
- Unlimited email warmup
- 1 billion B2B contacts database
- Anti-spam & deliverability suite
- LinkedIn automation (add-on)
- SMS and calls (add-on)
- AI personalization
- AI SDR capabilities
- Multi-workspace for agencies
- 14-day free trial
Shared Capabilities
Both 11x and Reply.io include:
- AI Personalization
The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.
Listed only by 11x
- Multi-Channel Sequences
- Sequence Builder
- Smart Replies
- Multi-Lingual Outreach
- Consented Outbound Calling
- Deep Research
- Signals and Triggers
- Deliverability & Mailbox Health
Listed only by Reply.io
- Unlimited email warmup
- 1 billion B2B contacts database
- Anti-spam & deliverability suite
- LinkedIn automation (add-on)
- SMS and calls (add-on)
- AI SDR capabilities
- Multi-workspace for agencies
- 14-day free trial
Integration Ecosystem
11x Integrations
11x connects with: Salesforce, HubSpot, Pipedrive, Zoho, Gmail, Slack, G2.
Reply.io Integrations
Reply.io connects with: HubSpot, Salesforce, Pipedrive, Copper CRM, Zendesk Sell, Close, Zapier, Make, n8n.
Shared Integrations
Both tools integrate with: Salesforce, HubSpot, Pipedrive.
Integrations listed only by 11x: Zoho, Gmail, Slack, G2.
Integrations listed only by Reply.io: Copper CRM, Zendesk Sell, Close, Zapier, Make, n8n.
Use Case Recommendations
Best Fit for 11x
- Enterprise buyers who prefer custom pricing and dedicated support
- SDR teams running multi-channel outreach sequences
- Sales managers tracking team engagement metrics
- Revenue teams coordinating email, phone, and social touches
Best Fit for Reply.io
- Organizations with complex tech stacks needing broad integration support (9 integrations)
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
- SDR teams focused on pipeline generation
Feature Comparison Summary
| Feature | 11x | Reply.io |
|---|---|---|
| Starting Price | Contact Sales | $59/mo |
| Top Tier Price | Contact Sales | $800/mo |
| Total Features Listed | 9 | 9 |
| Integrations | 7 | 9 |
Getting Started Checklist
- Define your multi-channel sales outreach and engagement tracking and cold email outreach requirements and monthly budget
- Estimate your expected sequences and engagement actions and email sending volume to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
11x serves the multi-channel sales outreach and engagement tracking side of an outbound stack and Reply.io the cold email outreach side. Reply.io publishes an entry price of $59/mo, while 11x uses custom pricing for its plans, so compare on features and on the quote you receive. Your decision should weigh pricing against the specific features that matter most for your workflow.
Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.
Pricing and features verified as of September 2026. Visit 11x and Reply.io for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between 11x and Reply.io?
- 11x is a sales engagement platform focused on multi-channel sales outreach and engagement tracking, using AI workers Alice for outbound and Julian for inbound. Reply.io is a cold email platform focused on cold email outreach, offering unlimited email warmup and a database of 1 billion B2B contacts.
- How much does 11x cost compared to Reply.io?
- Reply.io publishes list pricing starting at $59/mo for its Email Volume plan, with tiers going up to $800/mo for AI SDR Starter. 11x uses custom pricing across all three of its plans, Growth, Pro, and Enterprise, so buyers must contact sales for a quote rather than comparing list prices directly.
- Do 11x and Reply.io integrate with the same tools?
- Both platforms integrate with Salesforce, HubSpot, and Pipedrive. Beyond that, 11x adds Zoho, Gmail, Slack, and G2, while Reply.io adds Copper CRM, Zendesk Sell, Close, Zapier, Make, and n8n.
- Which platform is better for multi-channel outreach?
- 11x is built for multi-channel outreach, listing multi-channel sequences, a sequence builder, and consented outbound calling among its features. Reply.io is centered on cold email, though it offers LinkedIn automation and SMS and calls as add-ons rather than core features.
- Can a company use both 11x and Reply.io together?
- Yes, the article notes that many teams run one of each since the two platforms cover different parts of the outbound workflow. 11x handles coordinating outreach across email, phone, and social channels, while Reply.io focuses on sending email campaigns that land in the inbox and generate replies.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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