vanderbuild
Get in touch
← All tools

Mailstand

Cold email across multiple mailboxes

Outreach
For AI agents
APICapable readiness
About

What is Mailstand

Mailstand connects multiple mailboxes to a single cold email campaign, automatically distributing and rotating send volume across them so no single inbox carries the full load. It's built for SDRs, founders, and agencies running outbound at volume — particularly those managing several Google Workspace accounts or client inboxes under one roof. The standout capability is agency mode, which lets operators manage multiple client campaigns and mailboxes from a single dashboard with unified statistics. A/B template testing is unlimited, and sending schedules can be set per timezone. The honest limitation: Mailstand's integration footprint is narrow — Google Workspace is the primary connection, and there's no native CRM sync, so teams needing HubSpot or Salesforce handoffs will have to wire that themselves.

Outreach
Capabilities

Key features

Cold email sender

schedules and delivers outbound sequences at scale

Workflow

multi-step sequences, event-driven triggers, A/B testing, templates library

Our verdict

Vanderbuild take

For SDRs, founders, and agencies who run cold email from multiple inboxes, Mailstand is one of the more honest tools in the Email Sender category — it does one thing (multi-mailbox cold outreach) and prices it by mailbox rather than by seat, which actually makes sense. The API is available, so you can wrap Mailstand into your own automation layer or MCP setup without too much friction — it's not a native MCP server, but capable enough that a technical team can build around it. At $12/mo to start, the risk to test is low, and the 7-day free trial means you're not committing blind. The real ceiling is integrations: if your workflow depends on syncing replies or contact status back to a CRM, you're building that bridge yourself — there's no native HubSpot or Salesforce connector here.

Mateusz Sekta
Founder, vanderbuild
Learn more

Our Resources

The wedge

Agentic stack profile

API
REST

Programmatic access available.

REST API — straightforward to call from any agent or workflow tool. Rate limits and auth vary by plan.

API docs →
Agentic readiness
Capable

Solid API access — wraps cleanly for agent use.

Solid REST or SDK access. No MCP server yet, but easy to wrap in custom agent tooling. Most modern SaaS tools land here.

Stack role
Sequencer

Where this tool slots into an agentic pipeline.

Plays the role of Sequencer in an agentic pipeline. Use it to send and track multi-step outbound cadences across channels.

Compare

Mailstand alternatives

Tools that solve a similar problem — compared at a glance.

Mailstand(this tool)
Pricing
Seat-based
Budget
$
Best for
SDR / BDR, Founder
Readiness
Capable
API
REST
Gmass Inbox
Pricing
Seat-based
Budget
$$
Best for
SDR / BDR, Founder
Readiness
Capable
API
REST
Mailerlite
Pricing
Freemium
Budget
$
Best for
Marketing, Founder
Readiness
Native
MCP
Yes
API
REST
Answers

Frequently asked questions

Does Mailstand have a public API?

Yes — Mailstand ships a REST API. Docs: https://mailstand.readme.io/reference/introduction.

How much does Mailstand cost?

Mailstand: pricing is seat-based, expect entry tier ($) spend. Full pricing page: https://www.mailstand.com/pricing.

Who is Mailstand best for?

Mailstand is built for SDR / BDR, Founder, Agency. Fits Solo, SMB (1-50)-sized teams.

How well does Mailstand fit an agentic sales stack?

Tier: Capable. Solid public API, no MCP yet — straightforward to wrap in your own agent tooling.