Related Products
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About
Sellvance is a GTM experimentation platform for B2B SaaS teams still searching for product-market fit. Validate an ICP, test an offer, or check demand for a feature by talking to real prospects.
Most cold email tools are built for volume. But zero replies can mean nobody wants your product, or that your emails never reached the inbox. Sellvance tells them apart. Every experiment gets a Signal Check: a delivery verdict (did the emails arrive?), an interest verdict (is the positive reply rate above your threshold?) and a harm verdict (unsubscribes). Until delivery is confirmed, Sellvance won't let you judge the reply rate.
Includes a 9.5M+ company database, enrichment with AI agents, AI-written messages, in-app domains and mailboxes, deliverability monitoring, and an MCP server to run campaigns from Claude.
Free Experiment Plan, no domain or mailbox needed. Paid plans from $199/month.
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About
Sendmux gives AI agents their own inbox and a controlled way to send email. Each agent can receive messages, read threads, handle attachments, send replies, and react to new mail through signed webhooks or Server-Sent Events.
Teams can send through Gmail OAuth, Outlook OAuth, SMTP providers, or managed Amazon SES. Sendmux can spread sending across providers with weighted routing, sender-domain routing, health checks, failover, and quotas by second, minute, hour, or day.
Developers get Mailbox, Sending, and Management APIs, OpenAPI docs, SDKs, the sendmux CLI, MCP tools, and Sendmux Skills. The platform also covers tenant isolation, mailbox-scoped API keys, custom domains, logs, metrics, and usage-based pricing with no per-seat or per-mailbox fees.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
B2B SaaS companies (1–50 employees), bootstrapped or seed/Series A, still validating their ICP and first acquisition channel. Typical users: founders and early growth leads.
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Audience
AI agent builders that need an email API for AI agents
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Not Supported
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Support
Phone Support
Supported
24/7 Live Support
Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and VideosNo images available
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Screenshots and Videos |
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Pricing
$199/month
Free Version
Not Supported
Free Trial
Not Supported
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Pricing
$0.15 per 1000 emails
Free Version
Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Supported
In Person
Supported
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Company InformationSellvance
Founded: 2024
Estonia
sellvance.com
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Company InformationSendmux
Founded: 2026
Australia
sendmux.ai
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Alternatives |
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Categories |
Categories |
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Integrations
Claude
Not Supported
Codex CLI
Not Supported
FetchSandbox
Not Supported
Gmail
Not Supported
LangChain
Not Supported
Microsoft Outlook
Not Supported
Model Context Protocol (MCP)
Not Supported
Python
Not Supported
Ruby
Not Supported
Slack
Not Supported
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Integrations
Claude
Supported
Codex CLI
Supported
FetchSandbox
Supported
Gmail
Supported
LangChain
Supported
Microsoft Outlook
Supported
Model Context Protocol (MCP)
Supported
Python
Supported
Ruby
Supported
Slack
Supported
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