There are several reliable email service companies from which to pick. Which one is ideal for your team, user base, and financial situation? This session will walk you through some important factors to take into account when choosing an Best Email Service Providers (ESP) solution and provide insight into the vendor landscape.


The reports about email’s demise are vastly overblown. Although email is among the more established digital marketing channels (the first email blast was sent in 1978!), the Email Service Providers (ESP) sector is still very innovative. 

Perhaps you collected enough user emails for your list that customizing your messages using Gmail is no longer sufficient. Or perhaps you’ve been using email for a while and are prepared to upgrade your method. Congratulations on reaching your email milestone, whichever it may be. You’ve come to the perfect place to learn what to do next.

What is an Email Service Provider (ESP)?

An Email Service Providers (ESP) is a firm or platform that provides specialized services to help corporations, organizations, and individuals send, receive, and manage email communications. An email service provider (ESP) essentially acts as a go-between for email senders and recipients, offering the infrastructure, resources, and tools required to maximize email marketing and communication initiatives.

ESP platforms provide a number of tools intended to speed up the email process. Tools for building attractive email templates, managing contact lists, segmenting audiences, and automating campaigns are frequently included in these. 

Email Service Providers (ESP) also offer extensive tracking and analytics features, allowing users to measure metrics like open rates, click-through rates, bounce rates, and conversion rates to assess the success of their email campaigns. 

Users are given the information they need to strengthen their tactics, create content that is relevant to their intended audience, and make wise decisions that will improve engagement and outcomes. 

Utilizing an ESP has many advantages, one of which is its capacity to guarantee successful email delivery to recipients’ inboxes. To maximize email deliverability rates, Email Service Providers (ESP) maintain connections with a variety of internet service providers (ISPs) and email clients.  

To reduce the possibility of emails being marked as spam or phishing efforts, they use cutting-edge technologies and industry best practices, such as authentication standards like SPF, DKIM, and DMARC.

Additionally, ESPs are essential for following numerous email rules and regulations, including the CAN-SPAM Act and the General Data Protection Regulation (GDPR). To make sure email communications are moral and legal, they give features that let consumers modify subscription preferences, offer opt-out options, and keep accurate records of consent.

Businesses and individuals looking to make the most of email communication can benefit from working with an email service provider. Email Service Provider (ESP) helps users to develop, send, and manage emails that resonate with their audience and produce significant results by providing a suite of tools, and experience in delivery, analytics, and compliance. 

9 Best Email Service Providers (ESP) of 2023 

Software that enables you to deliver email campaigns to a list of subscribers is known as an email service providers. It is a collection of email marketing tools that both save and transmit email addresses. 

9 Best Email Service Provider (ESP) of 2023 

However, Email Service Providers (ESP) companies offer a number of functionalities to help you achieve your goals, depending on your demands.

Some of these may consist of: 

  • Automated email and marketing
  • Lead generation forms
  • A/B testing of email content and subject lines
  • Website monitoring
  • Audience division

While there are many options available, you should do your study on ESPs before making a decision.

1: Twilio SendGrid

SendGrid, one of the most reliable tools for transactional email and email marketing, is a Twilio subsidiary. Deliverability and size are two of SendGrid’s greatest advantages. With the aid of their deliverability features (domain authentication, proactive ISP outreach, etc.), organizations can see an increase in open rates of over 6%. 

Twilio SendGrid

A significant scale can also be used to carry do this. You can be sure that your email will reach your recipients because the SendGrid platform sends 70 billion emails each month with a 99.999% uptime.

Top features of Twilio SendGrid:

  • Mail Transfer Agent specifically designed to grow to billions of emails
  • SendGrid Automation provides effective email marketing automation.
  • Continuously adapting artificial intelligence to shifting ISP regulations
  • Using the Twilio platform, SMS, MMS, WhatsApp, and chat for multi-channel messaging
  • Marketers and developers
  • Transactional and advertising emails
  • Email delivery that is dependable at scale for high-volume senders

2: Braze

Apology’s successor, Braze, first made a name for itself as a mobile-first CRM with robust text and push messaging features. 

Braze has developed into a lifecycle engagement platform with a focus on highly customized, targeted customer messaging across many channels as a result of recent updates to its email marketing features and the addition of a visual journey builder.Braze

Top Features of Braze:

  • Notifications through SMS and push
  • Braze Canvas is a tool for building visual customer journeys.
  • Multichannel messaging automation
  • Dependable client service
  • Marketers who use email and push notifications
  • Any mid-market to enterprise organization, regardless of industry, but push-focused B2C companies particularly benefit from Braze.
  • Any size contact list


A data-driven marketing platform called allows users to create newsletters, transactional emails, SMS alerts, and messaging that are prompted by specific customer profiles.  A flexible and simple-to-implement solution for data-driven businesses and SMBs is its primary goal.

Top Features of

  • Data mapping for flexible customer behavior
  • Integration with the free software Liquid Logic from Shopify
  • Sophisticated email campaigns that focus on activation and retention based on real-time triggers from client behaviors
  • Focuses on the user and how they have responded to communications that have been sent
  • Those in marketing who want to use a simple plug-and-play technology for customer messaging
  • E-commerce startups and SMBs
  • Any size contact list

4: Drip

For B2B marketers, Drip is a tool for email marketing automation that works well. To construct automated campaigns based on consumer behavior, the visual campaign builder provides customized triggers, actions, and integrations.


Top Features of Drip:

  • Ease-of-use
  • Workflow creator
  • Users who initially didn’t open emails can be resent with a fresh subject line.
  • Integration with Magento, WooCommerce, and Shopify for a consistent online shopping experience
  • Marketers with a small team searching for advanced marketing automation
  • SMBs and startups across all sectors, but especially those with an eCommerce focus
  • Comparatively tiny to medium-sized contact lists

5: HubSpot

Hubspot is a complete CRM that handles social networking, lead creation, content management, and email services as well. HubSpot, the original and self-described “Inbound Marketing Platform,” assists marketers by enabling them to nurture leads through email campaigns while also generating demand through content. 


Because HubSpot is well regarded for being simple to use and navigate, both large and small organizations may benefit from it. However, because the pricing structure is based on the total amount of contacts in your database, very large enterprises find it to be unaffordable.

Top Features of HubSpot:

  • Several built-in API connectors
  • Visibility on social media platforms across additional touchpoints
  • Identification capability for leads
  • Including demand-generation and inbound marketing processes
  • Marketing professionals seeking a comprehensive set of marketing automation tools and solutions for inbound marketing
  • Any size B2B and B2C businesses, however huge B2C lists may find HubSpot to be prohibitively expensive.
  • Listings with more than 25K contacts

6: Iterable

A platform for marketing automation and multi-channel client engagement is called IterableIts main goal is to provide less tech-savvy marketers access to drag-and-drop automation flows, dynamic customization; and segmentation tools that are simple to use but powerful in the real world.


Top Features of Iterable:

  • Easy to use
  • Multivariate analysis
  • Omnichannel marketing
  • A deep level of personalization
  • Marketers seeking minimum engineering support to unleash multi-channel marketing automation
  • However, B2B enterprises may also find use for Iterable in mid-sized B2C businesses.
  • More than 100,000 contact records

7: Mailchimp

Many startups with tiny marketing teams love using Mailchimp. Not only is it simple to set up and use, but the templates are also user-friendly and simple to navigate.


It has recently incorporated additional functionality in addition to its branding, although it still lacks some capabilities, such as the ability to create automatic A/B split testing into subject lines.

Top Features of Mailchimp:

  • Easy to assemble
  • Simple to use
  • Interactive design templates
  • Requires neither a developer nor a designer
  • Searching for a user-friendly email marketing solution for marketing teams
  • Any industry’s small to medium-sized firms
  • lists with more than 100 contacts

8: Marketo

Marketo established itself as an early market leader for multi-campaign email management and is frequently referred to as the “10,000-pound gorilla” in the field of email marketing automationMore capability, however, entails a larger price tag and more experienced people to use it. For mid-market to enterprise-level B2B clients using Adobe products, Marketo is fantastic. 


Due to the expense or the high level of expertise and training needed to operate it, it might not be suitable for extremely small firms. Nevertheless, we use Marketo internally, so we are fans.

Top Features of Marketo:

  • For enhanced lead scoring, deep integration with Salesforce
  • Templates and an interface that is simple to utilize
  • High-level connectors and functionality
  • Dependable name brand
  • Ability to maintain private, sensitive lists for the financial or healthcare industries
  • Marketing departments seeking to combine CRMs and automate email marketing
  • B2B businesses of any size, but must spend $3 to $5 million or more annually on marketing.
  • More than 100,000 contact records

9: Salesforce Marketing Cloud

With the enterprise in mind, Salesforce Marketing Cloud is a potent CRM and marketing automation platform with Email Service Provider (ESP) capabilities. The acquisitions of Exact Target (for B2C) and Pardot (for B2B) led to the creation of the Email Service Providers (ESP) components. 

Salesforce Marketing Cloud

Salesforce is a significant investment that will take some time to set up, but once it is functioning to your standards, it can be quite effective.

Top Features of Salesforce Marketing Cloud:

  • Highly comprehensive
  • Routing and automation
  • Excellent for businesses that can use engineers for extensive customization
  • Marketers seeking access to one of the most complete email solutions
  • Enterprises that are both large B2B and B2C
  • large contact databases of over 100,000

Remember that different ESPs may offer different features and functionalities, therefore it’s crucial to do your research and pick an Email Service Providers (ESP) that suits the requirements and objectives of your company. 

What are the best email marketing services?

The specialty of email marketing companies is that many of them cater to relatively narrow industries or verticals. They do this even though both businesses significantly rely on email marketing because an independent publisher’s email requirements are very, very different from a B2B software company. 

As a result, each marketing platform’s tools, features, and functionality are frequently created particularly for the particular email requirements of the users they are aiming to serve. 

For example:

  • Specifically, for retail businesses, Klaviyo was created.
  • ConvertKit was created with creators in mind.
  • Loops was developed exclusively for SaaS businesses.
  • Designed primarily for B2B sales, Pardot

In other words, there are numerous businesses that would be regarded as the greatest email marketing platforms since each business excels at serving a particular user group. 

We’ve added some background to the email systems listed below to help you better understand each one’s advantages (automation, deliverability, etc.), user groups (b2b, retail, etc.), and costs.


The Email Service Providers (ESP) business is now pretty developed, and as a result, each vendor will cover the fundamentals and has a strong clientele from which you may learn. 

Each tool will be able to complete the fundamentals of engaging with your user base at scale in tailored ways, even though certain technologies are far better suited for particular-sized organizations and industries. This is especially true if you’ve used a service to build up your analytics.

Visit our ARZ Host here(link) for more details on the email service providers that ARZ Host supports.

FAQS (Frequently Asked Questions)

Q#1: What is an Email Service Providers (ESP)?

A business or platform that provides services for delivering, managing, and tracking email campaigns is known as an Email Service Providers (ESP). Businesses can produce, send, and evaluate email communications to their subscribers and clients using the infrastructure and resources provided by ESPs.

Q#2: What services do Email Service Providers offer?

A/B testing, template design, email scheduling, reporting, and the building of email campaigns are just a few of the things that ESPs provide. Additionally, they frequently offer functions like personalized service, segmentation, automated workflows, and adherence to email rules.

Q#3: How do ESPs ensure email deliverability?

To guarantee high reception rates for the emails of its clients, ESPs have specialized teams and systems in place. Making sure emails reach recipients’ inboxes rather than being identified as spam, involves monitoring the sender’s reputation, following proper email practices, managing bounce rates, and maintaining connections with ISPs (Internet Service Providers).

Q#4: What’s the importance of subscriber segmentation with ESPs?

By using subscriber segmentation, you may divide your email list into several categories according to things like demographics, behavior, past purchases, or level of involvement. Businesses can segment their lists using ESPs, which enables customized and appropriate email campaigns. Higher open rates, click-through rates, and general engagement may result from this.

Q#5: How do ESPs handle email automation?

A key component of ESPs is email automation, which enables companies to send emails automatically in response to events or actions. User sign-ups, abandoned shopping carts, birthdays, or particular interactions are a few examples of these triggers. ESPs give organizations the ability to design workflows that send pertinent emails automatically, saving time and boosting customer engagement.

Q#6: What’s the difference between transactional and marketing emails with ESPs?

Specific user actions, such as order confirmations, password resets, or delivery notifications, result in transactional emails being received. Contrarily, marketing emails are a component of larger email campaigns created to advertise items, distribute content, or engage subscribers. ESPs frequently differentiate between these specific types of emails to guarantee proper delivery and legal compliance.