Postbox Consultancy Services (OPC) Private Limited
Email Deliverability and Email Marketing Consultation, Full Service Email Marketing Agency, Emails Deliverability Audits, Email infrastructure MTA setup
If this is your agency
#2,077
of 28,921 agencies on Upwork by lifetime earnings, and #51 in Email Marketing.
- #2,076Weavers Web Solutions Private Limited$244 ahead
- #2,077Postbox Consultancy Services (OPC) Private Limitedthis agency
- #2,078SocialChamps Media Pvt. Ltd.$94 behind
Total earned
$257K
lifetime, as published
Jobs
204
contracts to date
Hours
2,864
billed hourly
Job Success
100%
JSS
Hourly rate
$100–$150/hr
min. project None
Index Score
63
#3845 overall
Insights
How these are computed- Run-rate, measured
- pending
- Needs two observations at least 14 days apart. Our next read of this page turns this on. Nothing is extrapolated from a single contract.
- Lifetime pace
- $28.7K/yr estimate
- Lifetime earnings divided by years on Upwork. A floor on historical pace, not a forecast.
- Earnings per job
- $1.3K
- Average contract value to date.
- Recent earnings, per Upwork
- $20.2K
- The "recent" figure Upwork attaches to the directory card, with 197 recent hours. Upwork does not publish the window, so it is shown as its number, not ours.
- Realised hourly
- $90/hr
- Total earned over billed hours. Fixed-price work inflates it; compare with the rate card.
Index Score breakdown63.4/100
Scale 30.9/40Quality 20/20Trust 0/15Momentum 9/15Team 3.5/10
Observation history
Every read of the public page. Last observed Oct 30, 2026 (live read).
| Observed | Earned | Δ | Jobs | JSS |
|---|---|---|---|---|
| Oct 30, 2026 | $257K | 204 | 100% |
One observation so far. The index re-reads every page on a rolling schedule; claimed pages are read weekly.
About
Email Deliverability & Infrastructure Experts We help businesses scale email marketing with high inbox placement, robust infrastructure, and data-driven strategies. Whether transactional, marketing, or affiliate - we make sure your emails land in the inbox, not spam. --- Our Core Services 📬 Email Deliverability Consulting * Deliverability audits & diagnostics * Inbox placement optimization * Spam score reduction * Email best practices implementation * IP & domain reputation management * Email list hygiene & verification We work with industry tools like MxToolBox, Validity Everrest (ReturnPath, 250ok), EmailOnAcid, and more. --- ⚙️ Large-Scale Email Infrastructure Setup (MTA) We design and deploy high-performance, scalable email sending systems: * PowerMTA (Port25) * GreenArrow (Engine, Studio, Monitor) * MailerQ, EmailSuccess * Postfix, Zimbra, hMailServer * Postal, iRedMail ✔ Complete setup, optimization & scaling ✔ IP rotation, warmup & reputation strategy --- 🚀 Email Platform & Tool Implementation Self-hosted & SaaS platforms: * MailWizz, Mumara, Sendy, Mautic, Interspire Third-party integrations: * Klaviyo, Mailchimp, Amazon SES * SendGrid, Mailgun, Elastic Email * Customer.io, Infusionsoft * GetResponse, Sendinblue, SparkPost Cold outreach tools: * Smartlead, Apollo.io, Instanly, Mailshake, Reply.io, Klenty, SalesHandy Workspace setups: * Google Workspace, Office365, Zoho Mail --- 📈 Email Marketing Strategy * Campaign planning & execution * Affiliate email marketing strategy & setup * Lifecycle automation (welcome, abandoned cart, win-back, etc.) * Performance tracking & optimization ✔ Available on retainer basis with daily/weekly reporting --- 🔥 Advanced Deliverability & Monitoring * IP & domain warmup strategies * Feedback loop setup (Google Postmaster, SNDS, Yahoo/AOL) * Seed list testing (GlockApps, Litmus, Mail-tester) * Blacklist monitoring & remediation ✔ Custom self-hosted tools: * IP blacklist monitoring systems * DMARC analytics platforms * Email verification engines --- 🧹 Email List Cleaning & Verification * Removal of invalid & risky emails * Spam trap detection * Bounce handling * Deep SMTP-level verification ✔ Option to build your own in-house verification system --- 🛠️ Technical Expertise DNS & Authentication: * SPF, DKIM, DMARC, rDNS setup * Cloudflare, AWS Route53, GoDaddy Cloud & Infrastructure: * AWS, Google Cloud, Azure * DigitalOcean, OVH, Linode, Rackspace Systems & Virtualization: * Linux (CentOS, Ubuntu, RedHat), Windows * VMware, VirtualBox, Citrix --- 💡 Why Choose Us? * Proven expertise in high-volume email systems * Strong focus on deliverability & compliance * Ability to build fully self-hosted solutions * End-to-end support: strategy → setup → execution → optimization --- If you're struggling with low inbox rates, scaling issues, or poor campaign performance, we can help you fix it - and scale it.Read more
Skills
Email SecuritySendGridEmail SupportMultiple Email Account ManagementEmail MarketingSocial Media Account IntegrationSocial Media MarketingEmail Campaign SetupEmail DeliverabilityMailWizzEmail CopywritingEmail CommunicationEmail Design
Agency facts
- Team size
- 2-10
- Teams on Upwork
- 1
- Founded
- Not published
- Member since
- Nov 2017
- Last contract
- Sep 2026
- Owner
- Sandeep S.
- Client focus
- Large business, Medium business, Very small business, Small business
- Members in
- India
- Languages
- Not published
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Postbox Consultancy Services (OPC) Private Limited is #2077 of 28,921 Upwork agencies, top 10%. Post the card, or share the link and the card comes with it.
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