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Sales and marketing · Email infrastructure and deliverability

Mailforge

Cold email domains and inboxes, set up for you.

Vendor
Mailforge
Pricing model
Per inbox per month, plus domains.
Runs on
Vendor cloud (SaaS)
Agentic OS layer
Flow
Industries
Any industry
Last reviewed
November 2026

Our verdict

Fast, low-cost setup of cold email domains and inboxes.

What it is

A service that buys domains and creates many sending inboxes on them, with SPF, DKIM and DMARC records configured automatically.

Best for

Agencies and outbound teams that need dozens of warm sending inboxes without setting each one up by hand.

Not the right fit

Teams that want dedicated IPs or full control of servers.

Key capabilities

Domain purchase

Bulk sending domains.

Inbox creation

Mailboxes set up for you.

DNS automation

Authentication configured.

Exports

Connect to your sequencer.

Strengths

  • Sets up SPF, DKIM and DMARC automatically
  • Low cost per inbox at volume
  • Connects to Instantly and Smartlead in a few clicks

Watch-outs

  • Shared infrastructure, so reputation depends on careful sending
  • Plan domain and inbox counts before you buy

Pricing

Per inbox per month, plus domains.

Pricing summarised in October 2026 and not re-checked since. Vendors change plans often, so confirm current pricing with Mailforge before you budget.

Security and governance

Sending infrastructure holds domain and mailbox credentials. Keep domains in your own registrar account where possible, use strong admin controls, and follow sender requirements from Google, Microsoft and Yahoo on authentication and complaint rates.

How we would roll it out

  1. Buy separate sending domainsNever risk your main company domain.
  2. Set up SPF, DKIM and DMARCAnd warm mailboxes before any campaign.
  3. Monitor placement weeklyPause inboxes that land in spam.

Compare with

Other tools in Sales and marketing, closest match first.

GlockApps

Email infrastructure and deliverability

Inbox placement and spam testing.

Best for Teams checking a new domain, template or sending setup before a campaign goes out.

Free trial, then monthly plans by test volume.Read review

Infraforge

Email infrastructure and deliverability

Private cold email infrastructure with dedicated IPs.

Best for Agencies and high-volume senders who want dedicated IPs and control over their sending setup.

Monthly subscription priced per mailbox and domain, with add-ons.Read review

MailReach

Email infrastructure and deliverability

Email warm-up and spam testing focused on deliverability.

Best for Teams that want dedicated warm-up and placement testing separate from their sending tool.

Monthly subscription per warmed mailbox, with spam test credits sold separately.Read review

Zapmail

Email infrastructure and deliverability

Pre-warmed Google Workspace mailboxes for cold email.

Best for Agencies and founders who want Google mailboxes ready to send without manual setup.

Tiered monthly subscriptions with bundled mailboxes and discounts for longer billing.Read review

Chili Piper

Routing and scheduling

Our pick

Instant meeting booking and lead routing from forms.

Best for Teams converting inbound demo requests into booked meetings fast.

Per user per monthRead review

Clay

Data and enrichment

Our pick

Waterfall enrichment and research across many data providers.

Best for Teams building signal-led, highly targeted outbound and enrichment workflows.

Credit-based plansRead review

Choosing between Mailforge and the alternatives?

Book a call. We look at your systems, data and governance together and tell you which platform fits, and what to build on it first.