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Deliverability Audits
A full technical teardown of your sending domains - authentication, blacklist status, content, reputation, and infrastructure - with a prioritized fix list.
Email Deliverability Consultant · Serving US Businesses
Your Emails Are Landing in Spam. We Have Deep Experience Fixing This for US Businesses.
Postbox Consultancy Services has fixed inbox placement for hundreds of US businesses across cold email, marketing, and transactional sending. 10+ years of hands-on deliverability work, 500+ clients worldwide, and a 5.0 rating on Upwork - with schedules built around your time zone.
10+Years Experience
500+Clients Served
5.0Upwork Rating
What We Do for US Businesses
From a one-time audit to fully managed email infrastructure, every service is built around one outcome: more of your emails reaching the inbox.
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B2B Cold Email Infrastructure
Domain setup, mailbox provisioning, SPF/DKIM/DMARC configuration, and warmup scheduling built to scale cold outreach without burning sender reputation.
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Email List Cleaning
Remove invalid, risky, and spam-trap addresses before you send - protecting your domain reputation and your inbox placement rate.
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Mailbox Warmup
Gradual, automated warmup for new and recovering domains so providers like Gmail and Microsoft trust your sending pattern.
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Email Team as a Service
An on-demand deliverability team - ongoing monitoring, monthly reporting, and rapid response when something breaks.
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Custom Platform Builds
Need tooling your ESP doesn't offer? We build custom dashboards and automation for deliverability monitoring at scale.
The Questions US Businesses Ask First
"Will time zones be a problem?"
No. Most of our US clients overlap with us during their morning and our evening - and we run async communication for everything else. Audits, reports, and fixes don't wait on a 9-to-5 clock.
"Can a consultant outside the US really help?"
Deliverability is infrastructure, authentication, and sender reputation - none of it is geography-specific. We've resolved blacklisting, SPF/DKIM/DMARC misconfigurations, and inbox placement issues for companies across all 50 states.
"Why not hire a US agency?"
US deliverability agencies typically charge $5,000-$15,000/month. Our retainers are structured to be significantly more accessible - and you get direct access to the consultant doing the work, not an account manager passing messages.
How We Work With US Clients
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Discovery Call
A short call (or async questionnaire if your schedule is tight) to understand your sending setup and goals.
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Free Audit
We review your domains, authentication records, and recent sending data, and send back a prioritized written report.
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Fix & Implement
We make the changes directly, or hand you a step-by-step plan your team can execute.
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Monitor & Report
Ongoing tracking via Google Postmaster Tools and Search Console, with monthly summaries.
Get Your Free Deliverability Audit
Tell us about your sending setup. We'll review your domain and reply with findings - no obligation, no cost.
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Authentication check (SPF, DKIM, DMARC)
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Blacklist & reputation scan
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Written summary with prioritized fixes
Or reach us directly: [email protected] · +91 6361139611
Common Questions From US Businesses
Do you work with US time zones?
Yes. We schedule calls during US morning hours and handle implementation, monitoring, and reporting asynchronously, so nothing waits on a single overlap window.
Can you fix a blacklisted domain?
Yes. We diagnose the cause (spam complaints, compromised sending, list quality, infrastructure misconfiguration), request delisting where applicable, and put safeguards in place to prevent recurrence.
Do you support specific ESPs like Mailchimp, HubSpot, or Instantly?
Yes. We work across major ESPs and cold email platforms, and adjust our recommendations to fit the sending limits and configuration options of whichever platform you use.
How fast can you start?
Most audits begin within 1-2 business days of the discovery call. Urgent issues like active blacklisting are prioritized immediately.
Do you sign contracts under US business terms?
Yes, we can work via Upwork (which provides built-in payment protection) or direct invoicing with standard service agreements.
Explore Our Services
Everything you need to fix, build, and manage email that reaches the inbox.
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All Services
Browse the full range of deliverability and email infrastructure services we offer.
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Deliverability Audit
A full technical audit of your sending domain, authentication, and reputation with a prioritized fix plan.
Learn about audits →✉️
Cold Email Services
Domain setup, mailbox warmup, and infrastructure built for B2B cold email at scale.
See cold email services →👥
Email Team as a Service
An on-demand deliverability team for ongoing monitoring, reporting, and rapid response.
Explore ETaaS →Stop Losing Revenue to the Spam Folder
Get a free review of your sending setup and a clear picture of what's keeping your emails out of the inbox.
Request Your Free Audit