Head-to-head

DoYouMail vs InboxKit

Google, Microsoft 365 & Azure mailboxes with built-in warmup

WINNER

DoYouMail

Horizontal cold email infrastructure - scale with dedicated servers, not crammed domains

$0.97 /mailbox $39/server/mo - each server gets its own dedicated IP. Create 3-4 IDs per domain per server, add more servers to scale.
  • 3-4 email IDs per domain per server - cold email best practice, not cramming
  • Horizontal scaling: add more dedicated servers to grow, not more IDs on one domain
  • 100% private dedicated enterprise-grade IP per server - no shared reputation
  • Automated SPF, DKIM, DMARC, MX per domain - every server ready in minutes
  • Unlimited domains per server - spread IDs safely across domains
  • Unlimited sending volume at cold-email-safe per-ID rates (~50/day/ID)
  • Not a Google/Microsoft reseller - no TOS shutdown risk
  • Dedicated USA/EU infrastructure - you own the server

Cold email scaling model

Horizontal - add more dedicated servers to scale, each with its own IP and safe per-domain limits

Max Unlimited (Nudge at 3-4 - cold email best practice) per domain - cold email best practice

Start Sending Emails

InboxKit

Google, Microsoft 365 & Azure mailboxes with built-in warmup

$2.50 /mailbox $31/mo Professional (10 slots), $81/mo Agency (30), $250/mo Enterprise (100). Azure mailboxes available.
  • Google/Microsoft reseller - cold email sending violates platform Terms of Service
  • Mailbox limits on every plan (10-100) - hard-capped by subscription tier
  • All mailboxes share the same tenant suspension risk - one violation wipes everything
  • $31/mo minimum for 10 slots - but you're paying for accounts that can be shut down
  • Azure tenants available but same reseller TOS risk applies
  • 4.9 G2 rating but reseller risk is inherent to the model, not the service quality

Reseller risk

This provider resells Google/Microsoft accounts. Cold email violates their TOS - accounts can be suspended without warning.

Scaling model

Vertical - more IDs in the same tenant, same TOS risk

IDs per domain: Limited by Google/Microsoft/Azure tenant

Visit InboxKit ↗

Feature comparison

Feature DoYouMail InboxKit
Per-mailbox cost $0.97 $2.50
IP type 100% Private Dedicated Dedicated
DNS setup Automatic Automatic
Mailbox limit Unlimited 10-100 depending on plan
Domain limit Unlimited Limited
Send limit Unlimited Subject to Google/Microsoft limits
Scaling model Horizontal - add more dedicated servers to scale, each with its own IP and safe per-domain limits Vertical - more IDs in the same tenant, same TOS risk
Max IDs per domain Unlimited (Nudge at 3-4 - cold email best practice) Limited by Google/Microsoft/Azure tenant
Reseller risk? No - own infrastructure Yes - TOS risk
Warmup included On request Yes
Platform Dedicated enterprise email infrastructure Google Workspace, Microsoft 365 & Azure reseller
Integrations SMTP, IMAP, CSV exports for all major tools 24+ integrations, full API with webhooks, analytics dashboard

Ready to move off InboxKit?

DoYouMail gives you dedicated IPs, unlimited inboxes, and automatic DNS setup at a fraction of the cost. Start sending in minutes.