MailRush.io vs PersistIQ: Cold Email Platform vs Sales Engagement Platform Comparison
Compare MailRush.io (cold email platform) and PersistIQ (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
MailRush.io is a cold email platform starting at $19/mo built for cold email outreach with unlimited senders and email warming, while PersistIQ is a sales engagement platform using custom pricing for multi-channel sales outreach across email, phone, and social channels. Teams needing inbox deliverability choose MailRush.io; teams coordinating multi-channel sequences choose PersistIQ. Many teams use both together.
Key takeaways
- MailRush.io's entry plan costs $19/mo and includes up to 1,000 contacts, 5,000 emails per month, and 1,000 emails per day.
- PersistIQ uses custom pricing across all plans, requiring buyers to contact sales for a quote.
- MailRush.io offers 3 pricing tiers (Starter, Pro, Scale) up to $99/mo, while PersistIQ lists only one contact sales tier.
- MailRush.io lists 11 total features including unlimited senders, unlimited email warming, and email validation, compared to 8 features listed by PersistIQ.
- PersistIQ integrates with 7 tools including Salesforce, Copper, Pipedrive, HubSpot, Gmail, and Outlook, while MailRush.io integrates with 4 tools including SMTP, IMAP, and Webhooks.
Reviewed and updated September 2, 2026
MailRush.io vs PersistIQ: Cold Email Platform vs Sales Engagement Platform Comparison
Sales teams building an outbound stack often weigh MailRush.io, a cold email platform for cold email outreach, against PersistIQ, a sales engagement platform for multi-channel sales outreach and engagement tracking. 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
MailRush.io is a cold email platform for cold email outreach; PersistIQ is a sales engagement platform for multi-channel sales outreach and engagement tracking. By each vendor's own wording, MailRush.io lists unlimited senders and unlimited email warming, and PersistIQ lists multi-channel sales outreach and prospecting.
MailRush.io publishes an entry price of $19/mo; PersistIQ uses custom pricing, so the two cannot be compared on list price.
If your priority is sending campaigns that land in the inbox and generate replies, MailRush.io is the one built for it; for coordinating outreach across email, phone, and social channels, that is PersistIQ. Many teams run one of each.
Understanding the Core Difference
MailRush.io is Cold email software that automates outreach and multi-step follow-ups from your own SMTP/IMAP mailboxes or MailRush-provided sending accounts. Email warmup and email validation are included in every plan.
PersistIQ is Sales engagement platform for small teams that builds prospect lists, automates personalized email, call and task sequences, and syncs activity with a CRM.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Starter
All plans
MailRush.io Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $19/mo | Up to 1,000 contacts | Up to 5,000 emails per month; up to 1,000 emails per day |
| Pro | $39/mo | Up to 30,000 contacts | Up to 10,000 emails per month; up to 1,500 emails per day |
| Scale | $99/mo | Up to 50,000 contacts | Up to 25,000 emails per month; up to 3,000 emails per day |
Source: MailRush.io Pricing
PersistIQ Pricing (as of September 2026)
| Plan | Price |
|---|---|
| All plans | Contact Sales |
Source: PersistIQ 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.
MailRush.io offers 3 pricing tiers compared to PersistIQ's 1, giving you more granularity as you scale.
Features Breakdown
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- and 5 more listed below
- Multi-channel Sales Outreach
- Prospecting
- Sales Email AI
- Chrome Extension
- A/B test
- Reporting
- and 2 more listed below
MailRush.io Key Features
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- Email follow-ups
- Suppression list
- Email copy spam assessment
- Email personalization
- Unsubscription automation
PersistIQ Key Features
- Multi-channel Sales Outreach
- Prospecting
- Sales Email AI
- Chrome Extension
- A/B test
- Reporting
- CRM Integrations
- 14-day free trial
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 MailRush.io
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- Email follow-ups
- Suppression list
- Email copy spam assessment
- Email personalization
- Unsubscription automation
Listed only by PersistIQ
- Multi-channel Sales Outreach
- Prospecting
- Sales Email AI
- Chrome Extension
- A/B test
- Reporting
- CRM Integrations
- 14-day free trial
Integration Ecosystem
MailRush.io Integrations
MailRush.io connects with: SMTP, IMAP, Zapier, Webhooks.
PersistIQ Integrations
PersistIQ connects with: Salesforce, Copper, Pipedrive, HubSpot, Gmail, Outlook, Zapier.
Shared Integrations
Both tools integrate with: Zapier.
Integrations listed only by MailRush.io: SMTP, IMAP, Webhooks.
Integrations listed only by PersistIQ: Salesforce, Copper, Pipedrive, HubSpot, Gmail, Outlook.
Use Case Recommendations
Best Fit for MailRush.io
- Budget-conscious teams looking for an affordable cold email platform
- Teams that need a wide feature set (11 capabilities listed)
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
Best Fit for PersistIQ
- Organizations with complex tech stacks needing broad integration support (7 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
- SDR teams running multi-channel outreach sequences
- Sales managers tracking team engagement metrics
Feature Comparison Summary
| Feature | MailRush.io | PersistIQ |
|---|---|---|
| Starting Price | $19/mo | Contact Sales |
| Top Tier Price | $99/mo | Contact Sales |
| Total Features Listed | 11 | 8 |
| Integrations | 4 | 7 |
Getting Started Checklist
- Define your cold email outreach and multi-channel sales outreach and engagement tracking requirements and monthly budget
- Estimate your expected email sending volume and sequences and engagement actions 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
MailRush.io serves the cold email outreach side of an outbound stack and PersistIQ the multi-channel sales outreach and engagement tracking side. MailRush.io publishes an entry price of $19/mo, while PersistIQ 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 MailRush.io and PersistIQ for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between MailRush.io and PersistIQ?
- MailRush.io is a cold email platform focused on cold email outreach, including unlimited senders and email warming, while PersistIQ is a sales engagement platform for multi-channel sales outreach and engagement tracking across email, phone, and social channels. They cover different parts of the outbound workflow rather than competing directly.
- How much does MailRush.io cost compared to PersistIQ?
- MailRush.io publishes an entry price of $19/mo, with Pro at $39/mo and Scale at $99/mo. PersistIQ uses custom pricing across all plans, meaning you must contact its sales team for a quote, so the two cannot be directly compared on list price.
- Which integrations does each platform support?
- MailRush.io connects with SMTP, IMAP, Zapier, and Webhooks, totaling 4 integrations. PersistIQ connects with Salesforce, Copper, Pipedrive, HubSpot, Gmail, Outlook, and Zapier, totaling 7 integrations. Zapier is the only integration shared by both platforms.
- Should I use MailRush.io or PersistIQ for my sales team?
- MailRush.io fits budget-conscious teams and agencies running high-volume outbound email campaigns that need a wide feature set. PersistIQ fits organizations with complex tech stacks needing broad integration support, enterprise buyers preferring custom pricing, and SDR teams running multi-channel outreach sequences. Many teams use both together.
- Does PersistIQ offer a free trial?
- Yes, PersistIQ lists a 14-day free trial as one of its features. MailRush.io's feature list does not mention a free trial, though it does publish a $19/mo entry-level Starter plan for budget-conscious teams.
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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