Reply.io vs SendFlock: Cold Email Platform Comparison
Compare Reply.io and SendFlock side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.
Compare Reply.io and SendFlock side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.
Reviewed and updated September 4, 2026
Reply.io vs SendFlock: Cold Email Platform Comparison
If you are comparing cold email outreach tools, Reply.io and SendFlock will likely both appear on your radar. They share some surface-level similarities, but the details reveal important differences in pricing, capability, and target audience.
The Quick Answer
By each vendor's own wording, Reply.io lists unlimited email warmup and 1 billion b2b contacts database, while SendFlock lists unlimited mailboxes and unlimited email warm up. A capability both offer can appear under different names, so read both feature lists below.
SendFlock offers a lower entry point at $29/mo compared to Reply.io at $59/mo.
If your priority is sending campaigns that land in the inbox and generate replies, both tools target it. The right choice depends on your budget, team size, and the specific capabilities you need most.
Understanding the Core Difference
Reply.io is AI-powered sales engagement platform with 1B+ B2B contacts, multichannel sequences, and AI SDR capabilities.
SendFlock is Cold email software for agencies and lean lead gen teams that bundles email warmup, automated follow-up sequences, email rotation across unlimited mailboxes, a unified inbox and a simple CRM in one tool.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Email Volume
Solo
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
SendFlock Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Solo | $29/mo | 10,000 prospect limit; unlimited email accounts | 60,000 emails monthly; unlimited email warmup |
| Growth | $49/mo | 30,000 prospect limit; unlimited email accounts | 30,000 emails monthly; unlimited email warmup |
| Scale | $99/mo | 100,000 prospect limit; unlimited email accounts | Card prints both No monthly sending limit and 12,000 emails monthly |
| Custom plan | Contact Sales | More than 30,000 prospects or custom needs | Not published |
Source: SendFlock Pricing
Pricing Analysis
SendFlock offers the lower entry point ($29/mo vs $59/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Features Breakdown
- Unlimited email warmup
- 1 billion B2B contacts database
- Anti-spam & deliverability suite
- LinkedIn automation (add-on)
- SMS and calls (add-on)
- AI personalization
- and 3 more listed below
- Unlimited Mailboxes
- Unlimited Email Warm Up
- Unified Inbox
- Follow Up Sequences
- A/B Testing
- Email Rotation
- and 4 more listed below
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
SendFlock Key Features
- Unlimited Mailboxes
- Unlimited Email Warm Up
- Unified Inbox
- Follow Up Sequences
- A/B Testing
- Email Rotation
- Global Block List
- Workflow Automation
- Bounce detection
- CRM
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 Reply.io
- 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
Listed only by SendFlock
- Unlimited Mailboxes
- Unlimited Email Warm Up
- Unified Inbox
- Follow Up Sequences
- A/B Testing
- Email Rotation
- Global Block List
- Workflow Automation
- Bounce detection
- CRM
Integration Ecosystem
Reply.io Integrations
Reply.io connects with: HubSpot, Salesforce, Pipedrive, Copper CRM, Zendesk Sell, Close, Zapier, Make, n8n.
SendFlock Integrations
SendFlock connects with: Gmail, Gsuite, Outlook, Zoho, Custom SMTP/IMAP, Zapier.
Shared Integrations
Both tools integrate with: Zapier.
Integrations listed only by Reply.io: HubSpot, Salesforce, Pipedrive, Copper CRM, Zendesk Sell, Close, Make, n8n.
Integrations listed only by SendFlock: Gmail, Gsuite, Outlook, Zoho, Custom SMTP/IMAP.
Use Case Recommendations
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
Best Fit for SendFlock
- Budget-conscious teams looking for an affordable cold email platform
- Teams that need a wide feature set (10 capabilities listed)
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | Reply.io | SendFlock |
|---|---|---|
| Starting Price | $59/mo | $29/mo |
| Top Tier Price | $800/mo | Contact Sales |
| Total Features Listed | 9 | 10 |
| Integrations | 9 | 6 |
Getting Started Checklist
- Define your cold email outreach requirements and monthly budget
- Estimate your expected 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
Reply.io and SendFlock both serve the cold email outreach market. SendFlock offers a more accessible entry point at $29/mo, while Reply.io starts at $59/mo. 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 Reply.io and SendFlock for current information.
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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