Mixmax vs Warmbly
Mixmax
mixmax.comWarmbly
warmbly.comSide by side
| Figure | Mixmax | Warmbly |
|---|---|---|
| Price from | $29/mo | $15/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 10 | 6 |
| Spec score · Cold Email Software | 9.2 (#1) | 7.8 (#25) |
| Headquarters | San Francisco, California, United States | London, United Kingdom |
| Integrations | Mixmax advertises more than 40 native integrations, including Salesforce, HubSpot, Slack, Google Calendar, LinkedIn, Zoom and Zapier. | The listed integrations include HubSpot, Salesforce, Pipedrive, Close, Zapier, Make, n8n, Slack, Discord, Calendly and Cal.com; Google Sheets lead sync is available on demand. |
| Product | Mixmax is a sales engagement platform for revenue teams that works inside Gmail and Outlook. | Warmbly is an open-source cold outreach platform that combines email warmup, sending, inbox, campaigns, analytics and CRM. |
| Scheduling | One-click scheduling includes booking pages, available times in emails, reminders and teammate booking. | Campaigns can send within weekday working-hour windows configured for a selected timezone. |
| Security | Mixmax states that it is SOC 2 Type II certified, HIPAA compliant, GDPR and CPRA compliant, and audited by Google. | Warmbly says it uses TLS 1.2 or above in transit and AWS KMS-backed, per-organization AES-256-GCM encryption at the application layer. |
| Support | Mixmax provides a Help Center, support messenger, email support, and an AI assistant named Maxine available 24/7 in the web app. | The pricing page lists community support for Starter, email for Grow, priority support for Business and dedicated support for Enterprise. |
Plans
Mixmax
- FreeFree
- I follow up now and thenFree
- Inbox Copilot$29 a month
- I reach out every week$29 a month
- Engagement Copilot$49 a month
- Mixmax Suite$89 a month
- Outreach is my job$89 a month
- We run outreach at scale$129 a month
- Meeting CopilotPriced on request
- Mixmax for TeamsPriced on request
Warmbly
- Warmup pool · FreeFree
- Warmup pool · Unlimited$15 a month
- Starter$23 a month
- Grow$71 a month
- Business$263 a month
- EnterprisePriced on request
In their own words
Mixmax
Mixmax is a sales engagement platform for revenue teams using Gmail or Outlook. It runs as a Chrome extension for Gmail, an Outlook add-in, and a web dashboard for sequences, reports, and workspace settings. Multi-stage sequences can send follow-up emails, create tasks, and schedule calls using merge variables and CSV uploads. Real-time email open and click tracking comes with desktop notifications, while scheduling links let recipients choose a time and add the meeting to both calendars. Rules can create Salesforce tasks after emails are opened or add recipients to sequences when deal stages change. Mixmax also syncs email, meeting, and sequence activity to Salesforce or HubSpot, and lists more than 40 native integrations included on every plan. The Free plan allows 20 tracked emails and up to 50 sequence recipients per month. Paid plans start at $29/user/mo billed annually; a 14-day trial is available. Mixmax requires Chrome for its extension and may limit one user's sending to 1,000 emails per day.
Warmbly
Warmbly is an open-source cold outreach platform that brings email warmup, campaign sending, a unified inbox, analytics, and CRM together. Campaign sequences can branch based on opens, clicks, or replies, include A/B variants, and send follow-ups in the same conversation thread. Sending can be restricted to weekday working hours in a selected timezone. The inbox classifies replies, bounces, out-of-office messages, and clicks across connected mailboxes. Warmbly is available on the web and through an API, or can be self-hosted under Apache 2.0. When a self-hosted installation connects to Warmbly Cloud for warmup, campaigns, contacts, and inbox data remain on the self-hosted server. Integrations include HubSpot, Salesforce, Pipedrive, Close, Zapier, Make, n8n, Slack, Discord, Calendly, and Cal.com; Google Sheets lead sync is available on demand. The free warmup pool supports up to 10 mailboxes. Paid campaign plans include Starter at $23 a month billed annually, with 150 emails per day, and Grow at $71 a month billed annually, with 3,000 emails per day.