Find Your Next ESP Vendor With InboxArmy

InboxArmy has worked with clients across more than 40 different email service providers. Let us leverage that expertise to help you choose the ideal ESP for your email marketing campaigns. Through our thorough process of requirements building, testing, demos, and consultation, we can help you zero down on the best ESP for your unique email marketing program.

What Our Customers Say

Trusted by 5000+ Brands Since 2016

We provide customized solutions based on your specific needs.

An ESP-Agnostic Agency to Help You Find an ESP That Best Fits Your Needs

There is no such thing as the “best” ESP for all companies. Are you facing constraints with your current ESP? Do you have issues with reporting, data, or integrations? InboxArmy can help you evaluate and migrate to a an ESP that best fits your specific needs without making things complicated. Here’s how we go about the process:


We do a preliminary audit to understand the prevailing challenges and things your current ESP is unable to deliver. For instance: Management is asking for certain kind of reports, you are blocked by your current ESP, you need an integration that is missing, you have issues with data, and so on…

Vendor Research and Shortlisting

Once we identify the issues you are facing, we go out and identify the ESPs that will suit your needs. There are literally hundreds of ESP vendors in the market each with a unique set of capabilities. We research and identify 3 ESPs that best match the requirements.

Live ESP

We communicate with the shortlisted ESPs and arrange for a demo. The demo will help you objectively evaluate the best fit and make an informed decision.

Honest & Unbiased Opinion

We do not resell any platform. So we won’t influence you to choose a specific ESP. You will always get an honest and unbiased opinion on vendor selection.

No Commissions.
Full Transparency.

We’re vendor-agnostic and do not receive any commissions from any ESP. Any discounts or commissions benefits are passed onto you. This way, you know our process is working in your best interest, not ours.

Not sure what you need?

We can provide email marketing solutions customized to your specific needs.

We Have
Experts for Your Email Service Provider

We support clients across 40+ email service providers. Be it enterprise platforms like Iterable, Braze, or Salesforce Marketing Cloud or small-to-medium business-focused email platforms like Klaviyo, MailChimp, or ActiveCampaign, we've got you covered.

Smooth and Hassle-Free ESP Migration

Moving to a new ESP can be difficult and time-consuming. We help you migrate from the current ESP to the new ESP hassles-free, thanks to our detailed migration checklist.

The ESP Migration Checklist

We do a preliminary audit to understand the prevailing challenges and things your current ESP is unable to deliver. For instance:


Data migration

When migrating to a new ESP, you want to take this time to review all data, lists, segments, etc. Do a clean-up and plan the foundational data structure on the new platform to receive existing data and be ready for new data fields as needed.



Extensive testing is conducted to ensure that emails are being sent correctly and everything is running smoothly.



Integrating the new ESP with your websites such as welcome pop up, lead magnets, e-commerce integration and other third party systems.

Email Template

Email Template Migration

If you have existing email templates that need to be used, we will rebuild and migrate them to the new ESP.



We make a list of automations in your existing ESP and initiate the process of moving them and updating them if necessary. We’ll test every automation before they are made live. You can learn more about our email marketing automation services here.



We organize training on the new ESP. The training is conducted by an expert from the ESP or our in-house expert.

Domain Authentication Setup

Domain Authentication Setup

When moving the sending domain to the new ESP, we will review and give guidance on setting up your SPF, DKIM and DMARC records to avoid any deliverability issues.

IP Warm-up

IP Warm up

The new IP needs time to be recognized by the ISPs. We’ll manage the IP warmup process to make sure that when larger volumes are ready to be sent that the ISPs of the world are ready to happily receive them. Generally, this takes 2 to 6 weeks.

Successfully Select and Migrate to Your New ESP with an Expert Team.

InboxArmy is a full-service email marketing agency. We have seen it all and rarely are any challenges new to us. Give us a call now.

  • Save Time

    Finding, researching, and moving to a new ESP can be a time-consuming affair. We help you save an inordinate amount of time by doing it professionally.

  • Prevent Failures

    Moving to a new ESP can be a complex process. We have mastered the process of ESP migration in a way that dramatically reduces the probability of failure.

  • Save Money

    We negotiate the best pricing and contract terms with the new ESP. Plus, we pass on the benefit of ESP commissions to you. Which means you save more and get the most out of your new ESP.

  • Proven Reliability

    Our depth and breadth with a large number of ESPs mean we know what we are doing and your ESP migration is completed without hiccups or last-minute surprises.

  • Vendor Neutral

    Since we do not resell or earn a commission from any ESP we can remain vendor-neutral and provide unbiased recommendations.

  • Custom Reports

    We will help you generate reports based on your requirements. If any reports are missing, we help create customized reports.

We Can Power Your Next ESP Selection Process

From startups to Blue Chip companies, we power email marketing campaigns for businesses of every shape and size. Over 5,000 Businesses put their trust in InboxArmy.

Why InboxArmy For Your Email Marketing Automation?

  • Driven by a leadership team with more than 75 years of experience.
  • Proven track record of serving 5,000+ clients globally
  • 25+ industries and verticals served
  • Fanatical customer service
  • Knowledgeable team with deep roots in the email industry
  • Established and well-documented processes
  • No hidden fees or long-term contracts
  • 100% ESP-agonistic

Interested In Collaborating?

Schedule a call today!

Get in touch today. Enter your information below to request a free, no-obligation consultation.


    (InboxArmy doesn't work or provide email list buying or rental service.)

    I searched through a number of forums and word of mouth on the web, and their name consistently came up. They have been in business longer than any email marketing company that I can remember talking with.

    Our company needed to revamp our entire email system for our main brand of bicycles, Sixthreezero. We hired InboxArmy to build out new automated flows, post purchase email flows, marketing campaigns, and anything else we could come up with to stimulate our sales. I worked with the director and his designers to develop the emails that would connect with our target market. InboxArmy managed me, I literally had to keep up with how fast they work.

    Immediate increase in revenues, our return customer conversion rate increased by roughly 50%, and our open to click rates all increased. The ROI was about 26 to 1. Zero complaints, our resources were not wasted hiring InboxArmy.

    Andrew Bowman
    E-Commerce B2C Director