where to buy inboxes
Looking to buy google workspace accounts that're US IP. Any recommendations?
Looking to buy google workspace accounts that're US IP. Any recommendations?
has anyone tried combining linkedin outreach with cold emails? Curious if it worked for you or not as looking at a SaaS that automates this
First, sending 100k emails does not mean emailing 100k new people.
If your sequence has 3 emails, you only need around 33,000 prospects per month.
The volume is actually the easy part.
Getting 100,000 emails delivered without destroying your domains is where most people mess it up.
Here is the math:
100,000 emails per month
÷ 22 sending days
= around 4,550 emails per day
For Google inboxes, I keep it at around 15 cold emails per mailbox per day.
Not 50. Not 100.
You can technically send more, but technical limits and safe cold email volume are completely different things.
At 15 emails per mailbox, you need around 304 active inboxes.
I would probably buy 330-350 inboxes though.
Some inboxes will get paused, disconnected, flagged or simply perform worse over time.
You always need spare capacity.
For domains, I normally keep around 3 inboxes per domain.
So for 330 inboxes, you would need around 110 sending domains.
Never send cold email from your main company domain.
Your website can be:
Your sending domains can be:
trycompany.com
meetcompany.com
getcompany.co
withcompany.com
Keep the domains believable.
Dont buy 100 domains that look like random AI generated words mixed together at 3am.
For buying Google inboxes, Puzzle Inbox is one option.
They provide Google Workspace inboxes for cold email and handle the technical setup like:
SPF
DKIM
DMARC
MX records
software integration
So instead of manually creating hundreds of Google Workspace users, domains and DNS records, you can buy the inboxes through Puzzle Inbox and connect them to your sending platform.
There are also providers like Mailforge, Primeforge and Infraforge.
But make sure you understand what you are actually buying.
Some providers offer real Google or Microsoft inboxes.
Others provide mailboxes on their own infrastructure.
Those are not always the same thing in terms of deliverability.
For sending software, Smartlead and Instantly are still the obvious volume options.
EmailBison is also worth checking if you want a more private or self-hosted style setup.
But the sequencer is not what makes the campaign work.
A bad lead list sent through perfect infrastructure is still a bad campaign.
Before sending anything:
Set up SPF
Set up DKIM
Set up DMARC
Add custom tracking domains
Forward every sending domain to your real website
Create real names and signatures
Make sure replies go somewhere humans actually check
Then warm the inboxes slowly.
I wouldnt buy 330 inboxes on Monday and start sending 4,500 emails on Friday.
A basic ramp could look like:
Week 1: warmup and a few real emails
Week 2: around 5 cold emails daily
Week 3: around 10
Week 4: move toward 15 if everything looks healthy
Dont blindly trust warmup scores either.
A dashboard saying “98% health” does not automatically mean your emails are landing in the inbox.
Test using real Gmail and Outlook seed accounts.
For lead data, Apollo is fine for building broad lists.
Clay is better when you want to combine multiple data sources, enrichment and custom research.
For email finding and verification, you can use:
Prospeo
Findymail
MillionVerifier
ZeroBounce
But verify the list right before launching.
An email verified 3 months ago can still bounce today.
My basic rules:
Keep bounce rates below 2%
Spam complaints should be basically zero
Dont blast catch-all emails
Remove unsubscribes immediately
Keep a global suppression list
Dont keep emailing someone because they ignored you 8 times
They probably saw it. they just dont care.
The copy should be simple too.
No giant HTML design.
No company logo.
No calendar link in the first email.
No fake “Re:” subject pretending you already spoke.
No 200-word story about your company.
Something like this is enough:
Hi {{firstName}},
noticed {{relevant observation}}.
We recently helped a {{similar company type}} with {{specific problem or result}}.
Thought this might be relevant since {{personalized reason}}.
Worth sending over the details?
That is it.
At this volume, segmentation matters more than clever copy.
Dont send the same email to:
SaaS founders
law firms
manufacturers
agencies
property managers
and then wonder why nobody replies.
Split campaigns by:
Industry
company size
job title
pain point
offer
location
100 smaller campaigns will usually beat one giant campaign with 30,000 leads.
Also track replies properly.
Not just positive reply rate.
Track:
Interested
Not now
Wrong person
Referral
Unsubscribe
Out of office
Bounce
Negative reply
Meeting booked
Meeting showed
Opportunity created
A campaign can have a 4% reply rate and still be terrible if every reply says remove me.
Another campaign can have a 1% reply rate and generate real revenue.
The stack could look like this:
Domains: Cloudflare or your preferred registrar
Google inboxes: Puzzle Inbox
Other infrastructure options: Mailforge, Primeforge or Infraforge
Sending platform: Smartlead, Instantly or EmailBison
Lead data: Apollo
Enrichment: Clay
Email finding: Prospeo or Findymail
Verification: MillionVerifier or ZeroBounce
CRM: HubSpot, Pipedrive or Close
Automation: n8n or Make
But the most important part is not having 330 inboxes.
It is having an offer people actually care about.
If the offer is weak, more volume just lets you fail faster and annoy more people.
Start with 5,000 emails.
Find the segments that reply.
Fix the targeting.
Fix the offer.
Then go from 5k to 20k.
20k to 50k.
Then eventually 100k.
Scale what is already working.
Dont use volume to avoid figuring out why nobody wants what your selling.