Sandeep and his PostBox Services team know their way around email marketing campaigns and strategies. 

Very cerebral and 100% professional.  They go above and beyond to make sure that you get what’s needed. 

Highly recommended

Yi Jin, Ph.D.

Head of Innovation, EVERSTRING TECHNOLOGY, Silicon Valley


Email Deliverability Audit


* Comprehensive Email Deliverability Audit
* Reveals issues in your emailing platform and practices
* Gives insights on best practices to improve deliverability
* Includes SeedList Testing, IP/Domain reputation, Content Reviews, Practices
* What is an Email Deliverability Audit

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Email Deliverability Consulting


* Short and long term goal assessment
* Through review of your existing email infrastructure
* Industry best practices overview and guidance
* Content recommendations
* ESP/ISP specific issues, IP Rotation Warm up

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Building Your Email Platform


* Building on third party ESPs
* Building your own small, medium or large scale email Infrastructure
* Training your teams
* Scaling/Maintenance of your existing infrastructure

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Email Campaigns Management


* List development, nurture and segmentation
* List warm up and reengaging old customers
* Developing and executing the campaigns
* A/B Split Testing, Drip Campaigns, Auto-Responders

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Email List Cleaning


* Deduplication : removing duplicate email addresses
* Checking email syntax
* Checking MX records / Validity of the domain
* Removal of disposable, role, spam trap email addresses

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Can postbox services provide us consultancy while we do our own hands on stuff ?

Sure. We can work as external consultants/auditors and help you and your teams to manage the email delivery themselves.

I am looking for some specific customised services.

Please send us the details of the services you are looking using the contact form below. We will get back to you shortly.

Where can I host my email infrastructure?

Postbox services can help you find the best provider to host your email infrastructure which depends on number of factors. Send us your details and let us understand what you are looking for. Please contact us using the form below.

What is the best open/click rate postbox services assure?

Inbox rate and other parameters like open and click rates depend on a large number of factors so its not possible to give a generic number which fits all cases.
We need to understand your system and your requirements. If you are building your system from scratch we can help you from beginning to implement all industry best practices so that you build a solid system which delivers.

If you have an existing system which is facing issues then we need to analyse all factors which are impacting your delivery and need to fix all of these issues. Fixing the delivery issues for an existing system takes some time, effort and patience but can surely be done.

We are looking to build email infrastructure which can handle few million emails daily. Can postbox services help?

Sure. We can help you build an email infrastructure of any scale you need. Whether you are an email service provider or you need a large/small scale system to handle in house email volume, we can help you with that. Please contact us with your requirements.

Tools & Utilities


  • Email deliverability audit Email deliverability is a very common problem which most of us who are in email marketing face. Deliverability issues are not limited to scenarios where the emails are sent in bulk but t...

  • From Wikipedia : A feedback loop (FBL), sometimes called a complaint feedback loop, is an inter-organizational form of feedback by which a Mailbox Provider (MP) forwards the complaints originating from their users...

  • For generating new SPF records you can use this free tool      SPF-Generator What is an SPF Record? An SPF (Sender Policy Framework) record is used to indicate which hosts are authorised to send emails for a domai...

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