Our products · Sales · Outbound email infrastructure
ReplyDak
Inbox-ready cold-email mailboxes in about 10 minutes, not 10 days.
Outbound email infrastructure for agencies and sales teams. ReplyDak buys lookalike sending domains, sets up SPF, DKIM and DMARC, creates real mailboxes and starts warm-up, all automatically, priced below the market leader.
Live at replydak.com · from $2.69 per mailbox
Who it is for
The buyer and the problem
Lead-generation agencies, SDR teams and founders who send cold email and need many healthy mailboxes without the setup work.
- Cold email needs separate sending domains so the main company domain stays safe.
- Buying domains, writing DNS records and creating mailboxes by hand takes days and is easy to get wrong.
- New mailboxes need weeks of warm-up before they reach the inbox.
How it works
ReplyDak, step by step
- 01
Find domains
Enter your company domain and see available lookalike sending domains and the exact price, with no sign-up.
- 02
Pay
Check out online; mailboxes start provisioning as soon as the payment is confirmed.
- 03
Set up
ReplyDak buys the domains, creates the DNS zone and sets SPF, DKIM and DMARC.
- 04
Create
Real mailboxes are created on the domains and verified.
- 05
Warm up
Warm-up starts automatically, and the dashboard shows each mailbox's progress.
Features
What it does
- Domains, DNS, SPF, DKIM and DMARC set up automatically
- Paid to mailboxes live in about 10 minutes
- Automatic warm-up with progress per mailbox
- Monthly billing per mailbox; remove mailboxes or cancel at period end
- Free tools: domain checker, cost calculator, deliverability check, email checker and first-line generator
- Help chat answered by Surge's own AI server, with a hand-off to a person
Integrations
Works with
- Google Workspace mailboxesAvailable
- Cloudflare DNSAvailable
- Microsoft 365 mailboxesIn pilot
- MCP server for AI assistantsIn pilot
Under the hood
Where AI is used, and where it is not
The model
The help chat runs on an open-source model on Surge's in-house AI server, grounded in ReplyDak's own guides.
Rules and code
Provisioning, DNS records, pricing, billing and renewals are plain code with retries and per-domain checks. The model never touches them.
People in the loop
Questions the help chat cannot answer are handed to a person, and domain renewals that need attention wait in an admin queue.
Use cases
How businesses use ReplyDak
New agency client
An agency sets up 30 warmed mailboxes on fresh domains for a client campaign the same day.
Protect the main domain
A SaaS founder sends outbound from lookalike domains so the company domain's reputation stays clean.
Scale sending
An SDR team adds mailboxes as volume grows and removes them when a campaign ends.
Check before buying
Anyone can test a domain's deliverability or estimate costs with the free tools.
What it shows about Surge
The capability behind the product
End-to-end automation
Payment to working mailboxes with no manual step, across registrar, DNS and mailbox providers.
Billing and payments
Recurring per-seat billing, renewals and payment links, built and run by us.
Our own AI for support
Customer help answered by our in-house model, grounded in product documentation.
Related accelerators: Agentic IT support desk with grounded answers and human hand-off · Content & campaign agent for CMS (AEM)
Book a working session
A working session with our architects on one of your use cases. You bring a process and sample documents; we leave you with a scoped plan: model, hosting, integrations, timeline and cost range.