MailRush.io vs Mailshake: Cold Email Platform Comparison
Compare MailRush.io and Mailshake side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.
MailRush.io and Mailshake are both cold email platforms, but MailRush.io focuses on automated outreach from your own SMTP/IMAP mailboxes with built-in warmup and validation starting at $19/mo, while Mailshake is a broader sales engagement platform with email, VOIP dialer, and LinkedIn automation starting at $29/mo. The right pick depends on budget, team size, and needed capabilities.
Key takeaways
- MailRush.io starts at $19/mo for its Starter plan, while Mailshake starts at $29/mo for its Starter plan.
- MailRush.io lists 11 features total, including unlimited senders, unlimited email warming, and API access with Webhooks.
- Mailshake lists 10 features total, including AI email writing, email rotation, and a VOIP dialer for US/Canada with unlimited calling.
- MailRush.io integrates with SMTP, IMAP, Zapier, and Webhooks, while Mailshake integrates with Salesforce, Pipedrive, HubSpot, and Zapier.
- Mailshake offers 4 pricing tiers compared to MailRush.io's 3 tiers, with its top tiers offering unlimited email sends.
Reviewed and updated September 2, 2026
MailRush.io vs Mailshake: Cold Email Platform Comparison
MailRush.io and Mailshake are both cold email platforms. Choosing between them depends on your team size, budget, and specific cold email outreach requirements. Here is what each vendor publishes about pricing, features, and integrations.
The Quick Answer
By each vendor's own wording, MailRush.io lists unlimited senders and unlimited email warming, while Mailshake lists unlimited email warmup and unlimited campaigns. A capability both offer can appear under different names, so read both feature lists below.
MailRush.io offers a lower entry point at $19/mo compared to Mailshake at $29/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
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.
Mailshake is Sales engagement platform with email outreach, VOIP dialer, and LinkedIn automation for sales teams.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Starter
Starter
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
Mailshake Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $29/mo | UNLIMITED uploaded contacts | 1,500 email sends per month |
| Email Outreach | $49/mo | UNLIMITED uploaded contacts | UNLIMITED email sends per month |
| Sales Engagement | $99/mo | UNLIMITED uploaded contacts | UNLIMITED email sends per month |
| Agency Plan | Contact Sales | UNLIMITED uploaded contacts | UNLIMITED email sends per month |
Source: Mailshake Pricing
Pricing Analysis
MailRush.io is more affordable at the entry level ($19/mo vs $29/mo). For teams with tight budgets or those just getting started with cold email outreach, this price difference matters.
Mailshake offers 4 pricing tiers compared to MailRush.io's 3, 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
- Unlimited email warmup
- Unlimited campaigns
- Mail merge
- A/B testing
- AI email writing
- Email rotation
- and 4 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
Mailshake Key Features
- Unlimited email warmup
- Unlimited campaigns
- Mail merge
- A/B testing
- AI email writing
- Email rotation
- Unified inbox
- LinkedIn automation (Sales Engagement+)
- VOIP dialer (US/Canada unlimited)
- Lead Catcher
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 Mailshake
- Unlimited email warmup
- Unlimited campaigns
- Mail merge
- A/B testing
- AI email writing
- Email rotation
- Unified inbox
- LinkedIn automation (Sales Engagement+)
- VOIP dialer (US/Canada unlimited)
- Lead Catcher
Integration Ecosystem
MailRush.io Integrations
MailRush.io connects with: SMTP, IMAP, Zapier, Webhooks.
Mailshake Integrations
Mailshake connects with: Salesforce, Pipedrive, HubSpot, Zapier.
Shared Integrations
Both tools integrate with: Zapier.
Integrations listed only by MailRush.io: SMTP, IMAP, Webhooks.
Integrations listed only by Mailshake: Salesforce, Pipedrive, HubSpot.
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 Mailshake
- Budget-conscious teams looking for an affordable cold email platform
- Enterprise buyers who prefer custom pricing and dedicated support
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
Feature Comparison Summary
| Feature | MailRush.io | Mailshake |
|---|---|---|
| Starting Price | $19/mo | $29/mo |
| Top Tier Price | $99/mo | Contact Sales |
| Total Features Listed | 11 | 10 |
| Integrations | 4 | 4 |
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
MailRush.io and Mailshake both serve the cold email outreach market. MailRush.io offers a more accessible entry point at $19/mo, while Mailshake starts at $29/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 MailRush.io and Mailshake for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between MailRush.io and Mailshake?
- MailRush.io is cold email software that automates outreach and follow-ups from your own SMTP/IMAP mailboxes or MailRush-provided sending accounts, with email warmup and validation included in every plan. Mailshake is a sales engagement platform that combines email outreach with a VOIP dialer and LinkedIn automation for sales teams.
- Which platform is cheaper, MailRush.io or Mailshake?
- MailRush.io has a lower entry price at $19/mo compared to Mailshake's $29/mo starter plan. This makes MailRush.io a better fit for budget-conscious teams or those just starting with cold email outreach, according to the article's pricing analysis.
- Does Mailshake or MailRush.io offer unlimited email sending?
- Mailshake's Email Outreach ($49/mo) and Sales Engagement ($99/mo) plans list unlimited email sends per month, as does its Agency Plan. MailRush.io's plans instead cap monthly and daily email sends, ranging from up to 5,000 emails per month on Starter to up to 25,000 emails per month on Scale.
- What integrations do MailRush.io and Mailshake support?
- MailRush.io connects with SMTP, IMAP, Zapier, and Webhooks. Mailshake connects with Salesforce, Pipedrive, HubSpot, and Zapier. The only integration both tools share, according to their published lists, is Zapier.
- Which tool is better for agencies managing multiple clients?
- Both MailRush.io and Mailshake are listed as good fits for agencies managing multiple client outreach programs. MailRush.io is also recommended for teams needing a wide feature set of 11 listed capabilities, while Mailshake suits enterprise buyers who prefer custom pricing and dedicated support.
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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