Side by side
Mails.ai vs Mystrika
Both stand on cold email software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIWeb
Mails.ai combines agent-focused email handling with structured inbound data and injection scanning. Its plan caps and exclusions matter: sends stop at the cap, and cold outreach is not supported.
Visit Mails.ai
Free plan Web
Mystrika combines outreach, warmup and reply handling with integrations for common email and CRM services. Its sending and account limits matter for teams planning larger campaigns.
Visit MystrikaThe facts
| Mails.ai | Mystrika | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | Web |
| Lowest paid plan | Pro: $20 a month | Growth: $30 a month |
| Plans published | 3 | 4 |
| Maker | Not published | Not published |
| Website | mails.ai | mystrika.com |
| On cold email software | #4 of 35 | #8 of 35 |
Mails.ai: what it does well
- Structured inbound replies include headers and attachments
- All plans scan messages for prompt injection
- REST, webhooks, MCP server, and SDKs
- Free plan includes 3,000 monthly events
- Lists integrations with agent frameworks and tools
What to know first
- Cold outreach is refused at the API
- No SOC 2 today; HIPAA is outside Phase 1
- Over-cap inbound replies are not scanned or sent to webhooks
- Dedicated IP is an on-request roadmap add-on
Mystrika: what it does well
- Includes AI-personalized outreach and sequenced follow-ups.
- Unified Inbox consolidates replies across campaigns and accounts.
- Connects with Gmail and Outlook.
- Integrates with Salesforce, HubSpot and Pipedrive.
- Free plan includes 500 Prospect Slots.
What to know first
- Campaign sending is limited to 50 emails per sending address daily.
- Warmup is limited to 100 emails per address daily.
- Maximum of 10 email IDs per domain.
- Soft limit of 299 warmup email IDs.
Alternatives to Mails.ai Alternatives to Mystrika The whole list