Bring your own sending rails

Already have mailboxes?
Run them through eKnoxx for $49 a month.

Google Workspace, Microsoft 365 or your own SMTP. Connect them, import your list, send. Hygiene included.

Read the mailbox math first. Most people switch to Sending Agents once they see it.

Google rails, honestly

Cheap on paper. Expensive in hours.

A Google mailbox is a fine cold sender for about 25 emails a day. The trouble starts when you need fifty of them.

Where Google rails win

  • About $7 a mailbox. Cheap to start at low volume.
  • Replies land in a real inbox with real history.
  • You already know the admin console.
  • Great for warm, opted-in mail to people who know you.

Where they cost you

  • About 25 cold sends a day per mailbox before flags start.
  • One Workspace account per domain, three mailboxes each. Accounts multiply.
  • Two weeks of warm-up per mailbox, then a warm-up tool forever.
  • One complaint can burn a domain and everything on it.
  • Every mailbox connected, rotated and watched by you.
The mailbox math

Pick a monthly volume. See both bills.

25 cold sends a day per mailbox, three mailboxes per domain, $7 a mailbox, $12 a year per domain. Sending Agents: 30,000 a month each.

10,000

Google rails

What you run, warm and watch yourself.

  • 14mailboxes
  • 5domains, one Workspace account each
  • $103a month in mailboxes and domains
  • 10,500sends a month at full pace

Sending Agents

Domains, DNS, mailboxes, warm-up and hygiene done for you.

  • 1agent
  • 1free domain, registered and set up by us
  • $99a month, all in
  • 30,000sends a month at full pace
See Sending Agents

Google numbers leave out the hours, the warm-up tool and the cleaning bill. Agent capacity is the full-pace ceiling; the warm-up engine ramps you there.

Still want your own rails?

The $49 platform plan.

Your list, your mailboxes, our platform. Everything eKnoxx does, with hygiene on every import.