EMAIL SENDING INFRASTRUCTURE

Buy It Here or Bring Your Own

Get domains, Google, Outlook, and SMTP mailboxes directly inside SuperSend with auto-configured DNS. Or connect the infrastructure you already have via API key. One sequencer, any infrastructure.

Buy Inside SuperSend

The Full Stack — Domains, Mailboxes, DNS — One App

Buy sending domains and mailboxes directly inside SuperSend. DNS is configured automatically. No manual setup, no external tools. Everything managed from one place.

Sending Domains

Buy and manage domains with auto-configured DNS

  • SPF, DKIM, DMARC set up automatically
  • MX records and nameservers configured
  • Domain health monitoring built in
  • Ready to send in minutes

Google Workspace Mailboxes

Google-powered mailboxes provisioned inside SuperSend

  • Provisioned and ready to send
  • Managed entirely from SuperSend
  • High deliverability with Google reputation
  • Warmup included

Outlook Mailboxes

Microsoft-powered mailboxes provisioned inside SuperSend

  • Provisioned and ready to send
  • Managed entirely from SuperSend
  • Microsoft infrastructure reliability
  • Warmup included

Private SMTP Mailboxes

Dedicated SMTP mailboxes for high-deliverability sending

  • Private SMTP infrastructure
  • High-volume sending support
  • Full deliverability controls
  • Dedicated IP options available
All infrastructure includes automatic DNS configuration, deliverability monitoring, and warmup

Already Have Infrastructure? Connect It.

Bring your existing sending providers and run everything from SuperSend.

Mission Inbox logo

Mission Inbox

Cold Emailvia API Key

Email infrastructure and deliverability platform with isolated, dedicated servers and IPs. Built for sales, marketing, and transactional email. Includes AI content scanning (MI Shield™), workload isolation, and API or SMTP access.

  • High-Volume API Sending
  • Dedicated Isolated Sending Per Customer
  • SMTP Mailboxes
InboxKit logo

InboxKit

Cold Emailvia API Key, Oauth

Google Workspace, Microsoft 365, and Azure mailbox provisioning for cold email. Official accounts, automatic DNS setup, built-in warmup, and 95% inbox placement. Full API and 15+ platform integrations.

  • Google Mailboxes
  • Outlook Mailboxes
  • Azure Mailboxes
Mailreef logo

Mailreef

Cold Emailvia API Key

Dedicated cold email mailbox infrastructure with dedicated servers and IPs. Unlimited free mailboxes, 1-click setup, automatic DNS, and pre-warmed domains. Built for scale with full API access.

  • Private SMTP Mailboxes
  • Dedicated Mail Servers
  • Dedicated IP Addresses

Infraforge

Cold Emailvia API

Private cold email infrastructure with dedicated IPs, automated DNS, and pre-warmed domains. Built for cold outreach at scale.

  • Dedicated IPs per mailbox
  • Automated DNS setup (DMARC, SPF, DKIM)
  • Pre-warmed domains and mailboxes
  • Works with any sending software
Gmail logo

Gmail

Cold Emailvia OAuth

Bring your own Gmail or Google Workspace inboxes. Connect via OAuth and run campaigns from your existing Google accounts—no new infrastructure to buy.

  • Connect existing Gmail or Google Workspace accounts
  • OAuth authentication—no app passwords required
  • Use with your own domain
Outlook logo

Outlook

Cold Emailvia OAuth

Bring your own Outlook or Microsoft 365 mailboxes. Connect via OAuth and run campaigns from your existing Microsoft accounts—no new infrastructure to buy.

  • Connect existing Outlook or Microsoft 365 accounts
  • OAuth authentication—no app passwords required
  • Use with your own domain

Sending via API? Every reply still lands in your inbox.

SuperSend is the only sequencer that provides full reply handling on top of API-based sending infrastructure. Send through Mission Inbox OBM with no traditional mailboxes — and still get threaded conversations, AI categorization, and a unified inbox for every reply.

See how high-volume reply handling works

Email Sending Infrastructure

Common questions about buying or connecting sending infrastructure with SuperSend.

Start Sending Cold Email Today

Buy your infrastructure or connect your own. Build sequences, monitor deliverability, manage replies. All in one product.

Join 500+ teams sending with SuperSend