New from Outboundry
Cold email infrastructure priced for real volume
Our own sending infrastructure, built for outbound. Monitored shared pools or a workspace IP of your own, DNS that configures itself, and every reply in one Outboundry inbox. From $0.80 per mailbox a month.
IPDKMX+1kShared or dedicated IPs, automated DNS, ready in minutes
Mailboundry · infrastructure
Domains42
Mailboxes126
Dedicated IP1 · all mailboxes
Auth checksAll pass
Recently provisioned
mail.northgate-hq.com3 mailboxesLive
go.northgate-hq.com3 mailboxesLive
try.northgate-hq.com2 mailboxesWarming
Each domain carries up to 5 mailboxes, on monitored pools or an IP reserved for you.
Why we built it
Office email was never meant to send cold
Google and Microsoft were built for internal teams. Cold outreach breaks their assumptions, and placement suffers.
01
Unmanaged pools are not your reputation
You share IPs with unscreened senders. A vetted, monitored pool behaves nothing like that.
02
Per-seat pricing punishes scale
Per-user pricing assumes one human per mailbox. Outbound needs dozens.
03
Setup is where campaigns die
Every manual DNS step is a chance to quietly break authentication.
Comparison
Mailboundry against Google and Microsoft
Costs shown for 200 sending mailboxes, the sort of estate a team sending at real volume actually runs.
MailboundryGoogle WorkspaceMicrosoft 365
Dedicated IP optionPer workspace, from $1.30 / mailboxShared pool onlyShared pool only
Built for cold outreachOffice emailOffice email
Automated SPF, DKIM, DMARCManualManual
Mailboxes per domainUp to 5, 3 advisedPer paid licencePer paid licence
Extra dedicated IP$50 / month, per workspaceNot offeredNot offered
SSL & domain masking
Bulk DNS across domains
Whitelabel for agencies
Time to first sendMinutesHours to daysHours to days
200 mailboxes / month$180 shared IP, annual billing$1,400 at $7 per seat$1,200 at $6 per seat
Still want mainstream mailboxes for part of your estate? Outboundry Email Infrastructure sells deliverability-ready Google and Microsoft 365 mailboxes alongside Mailboundry. Most teams at scale run both.
Shared or dedicated IPs
Choose the IP model your volume deserves
Shared: vetted, monitored pools with per-sender ramps, best below ~1,500 sends a month per IP. Dedicated: an IP reserved for your workspace, best once volume is consistent. Switch any time.
- Mailboundry Shared from $0.80, Mailboundry Dedicated from $1.30
- Vetted senders, enforced ramps and monitored complaint rates on every pool
- IPs allocated in the region you sell into
- One dedicated IP per workspace, so every mailbox you add sends from it
- Switch a workspace from Shared to Dedicated without moving domains
- Add another dedicated IP for $50 a month, where others charge $100+
IP allocation
mail.northgate-hq.com198.51.100.24Dedicated
go.northgate-hq.com198.51.100.24Dedicated
try.northgate-hq.com198.51.100.24Dedicated
On Mailboundry Dedicated the IP is reserved for your workspace alone: every domain and mailbox you add sends from it, and nobody else does. On Shared, the pool is monitored and rotated, never open enrolment.
Automated DNS
SPF, DKIM, DMARC, MX and tracking, set for you
Every record written and verified to current Gmail and Yahoo sender rules.
- SPF, DKIM and DMARC written automatically
- MX and custom tracking domain configured
- Records verified before the domain goes live
- Re-checked continuously, not just at setup
DNS authentication
SPFv=spf1 include:_spf.mailboundry.com ~allPass
DKIMmb1._domainkey · 2048-bitPass
DMARCp=none; rua=mailto:dmarc@…Pass
MX10 mx.mailboundry.comPass
Trackinglink.northgate-hq.com · SSLPass
Domains
Bring your own domains, or buy them here
Connect existing domains or register new ones in-app from $5.99 a year. DNS written and verified either way.
- Bring existing domains from any registrar, at no extra cost
- Or buy new ones in-app from $5.99 a year, depending on TLD
- Connected and authenticated on purchase
- Transfer them out whenever you want
- Up to 5 mailboxes per domain, and we advise 3
Add domains
northgate-hqSearch
getnorthgate.com$11 / yrAdd
northgate-hq.co$14 / yrAdd
northgate.email$5.99 / yrAdded
From $5.99 a year depending on the TLD, or connect domains you already own. DNS is configured the moment a domain is added.
Bulk DNS updates
Change 200 domains as easily as one
Update DMARC or tracking across every domain in one edit.
- Edit records across any number of domains
- Apply a change to a workspace in one action
- Every update verified after it propagates
- Full change history per domain
Bulk update · 42 domains
RecordDMARC
New valuep=quarantine; pct=100
Applies to42 domains · workspace Northgate
33 of 42 updated and verified · about 40 seconds left
SSL & domain masking
Branded links that never expose your main domain
SSL-secured tracking on outreach domains, keeping your main site out of cold headers.
- SSL issued and renewed automatically
- Custom tracking domain per sending domain
- Masked redirects to your real site
- Primary domain kept out of cold sequences
Domain masking
Public linklink.getnorthgate.com/r/8fa2
Resolves tonorthgate.io/pricing
CertificateLet's Encrypt · auto-renew
SSL statusValid · 89 daysSecured
Workspaces & portability
Built for agencies, not locked to us
A workspace per client with its own domains, IPs and billing. Works with any sender; replies land in Outboundry.
- A workspace per client or per project
- Move domains and mailboxes between workspaces
- Every mailbox lands in the Outboundry unified inbox
- Works with any other sending tool over SMTP and IMAP
Workspaces
Northgate Analytics42 domains · 168 mailboxes
Halden Partners18 domains · 72 mailboxes
Client · Verve Robotics9 domains · 36 mailboxes
Separate billing, separate reputation, one login.
Pricing
From $0.80 per mailbox a month
Pick Shared or Dedicated. Price falls with volume and term. No seat licence, no setup fee.
1–10 mailboxes$2.00per mailbox / month
11–50 mailboxes$1.90per mailbox / month
51–200 mailboxes$1.80per mailbox / month
200+ mailboxes$1.70per mailbox / month
500+ mailboxes$1.60per mailbox / month
Minimums, not contracts10 mailbox slots on either plan. One dedicated IP covers every mailbox in a workspace; extra IPs are $50 a month, against $100+ elsewhere.
Domains billed separatelyBring your own, or buy in-app from $5.99 a year by TLD, with up to 5 mailboxes each and 3 advised.
Scale either wayAdd or remove mailboxes at the start of any cycle.
Whitelabel
Resell Mailboundry as your own
Run Mailboundry under your brand, each client on separate workspaces, IPs and billing.
- Your brand, your domain, your pricing
- A workspace and dedicated IPs per client
- Billing and margin handled on your terms
- Same automated DNS and SSL underneath
Your brandinfra.youragency.com
Clients14 workspaces · 312 mailboxes
IsolationDedicated IPs per client
Outboundry visible to clientsNo
Setup
Sending in three steps
1
Add or buy domains
Search and register outreach domains inside Outboundry, or point ones you already own at Mailboundry.
2
Provision mailboxes
Choose how many mailboxes each domain needs, and the IP type. DNS records and SSL are set up for you.
3
Warm up and send
Mailboxes connect straight into Outboundry warmup and campaigns, or into any other tool over SMTP and IMAP.
FAQ
Mailboundry questions, answered
What exactly is Mailboundry?
Mailboundry is Outboundry’s own email sending infrastructure, built specifically for cold outreach. Instead of renting Google Workspace or Microsoft 365 seats, you get domains and mailboxes running on our platform, on shared IP pools we monitor or an IP reserved for your workspace alone that all of its mailboxes send from, with DNS authentication configured for you.
Can I use domains I already own, or do I have to buy them from Outboundry?
Either works. Connect domains you already hold at any registrar and Mailboundry writes and verifies the DNS for them, or search and register new ones in-app from $5.99 a year depending on the TLD. Domains bought through Outboundry can be transferred out whenever you want.
How is this different from the mailboxes I can already buy from Outboundry?
Our Email InfrastructureMailboundry product sells you real Google Workspace and Microsoft 365 mailboxes, which is the right answer when a prospect’s filters expect a mainstream provider. Mailboundry is our own stack: cheaper per mailbox, shared or dedicated IPs, and no per-seat licence. Both cap what a single domain should carry, because that is a deliverability rule rather than a billing one. Plenty of teams run both.
How many mailboxes can I run on one domain?
Five is the hard limit, and three is what we advise. It is not a billing cap: loading a single domain with senders concentrates risk, so if that domain gets flagged you lose every mailbox on it at once. Spreading the same volume across more domains costs a few dollars a year more and protects the whole estate.
Do I have to log into every mailbox separately?
Each mailbox has its own credentials if you want them, so you can sign into any one directly. Day to day you should not need to: every Mailboundry mailbox feeds the Outboundry Unified Inbox, so replies from all of them, alongside your LinkedIn conversations, sit in one place.
What does an extra dedicated IP cost?
$50 a month. Infraforge and comparable providers charge upwards of $100 for the same thing. Mailboundry Dedicated gives your workspace one IP that all of its mailboxes send from, so most teams never need a second. Add one when you want to isolate a high-risk campaign or a specific client from the rest of your sending, or split a second workspace onto its own IP.
Why do dedicated IPs matter for cold email?
On shared infrastructure your sending reputation is averaged with everyone else on that IP. If another sender on the pool gets flagged, your inbox placement drops even though your own sending was clean. A dedicated IP means the only behaviour affecting your reputation is yours. On Mailboundry Dedicated that IP belongs to your workspace, so every mailbox under it builds and shares the same reputation rather than each starting from zero.
Do I have to touch DNS at all?
No. Add a domain and Mailboundry writes and verifies SPF, DKIM, DMARC, MX and your tracking records, then keeps checking them. If something drifts, you get told before it costs you replies.
Can I use Mailboundry with a tool other than Outboundry?
Yes. Mailboundry is infrastructure, not a walled garden. Mailboxes connect over standard SMTP and IMAP, so you can send from Outboundry or from any other sequencer you already use.
Is there a free trial?
No, and that is deliberate: domains, IPs and mailboxes cost real money the moment they are provisioned. You buy what you need inside the app and can scale up or down each cycle.
Can agencies resell Mailboundry?
Yes. The whitelabel programme lets you resell Mailboundry under your own brand and domain, with client workspaces separated and billed independently. Talk to us and we will set the revenue share up.
How quickly can I start sending?
Minutes. Domains are registered and authenticated automatically, and mailboxes are provisioned straight after. We still recommend running them through warmup before a campaign, which Outboundry does for you.
From $0.80 per mailbox a month
Stop sharing an IP with strangers
Infrastructure built for cold outreach. Ready in minutes.
Mailboundry is part of Outboundry. One login for infrastructure, campaigns and replies.
Compare
Mailboundry against the alternatives
Honest, priced comparisons against the other cold email infrastructure providers, checked against their public pricing.