Constant Contact vs Mailgun vs SendGrid comparison

Constant Contact and Mailgun Technologies are both solutions in the Cloud Email category. Constant Contact is ranked #13, while Mailgun Technologies is ranked #7 with an average rating of 8.0. Constant Contact holds a 1.2% mindshare in CE, compared to Mailgun Technologies’s 9.5% mindshare. Additionally, 87% of Constant Contact users are willing to recommend the solution, compared to 100% of Mailgun Technologies users who would recommend it.

Constant Contact

Read 8 Constant Contact reviews

173 Views
78 Comparison Views

87% willing to recommend

Mailgun

Read 3 Mailgun reviews

511 Views
465 Comparison Views

100% willing to recommend

SendGrid

Read 12 SendGrid reviews

1,003 Views
942 Comparison Views

100% willing to recommend

Constant Contact

Mailgun

SendGrid

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Executive Summary

We performed a comparison between Constant Contact, Mailgun, and SendGrid based on real PeerSpot user reviews.

Find out what your peers are saying about MailChimp, Amazon Web Services (AWS), Twilio and others in Cloud Email.

To learn more, read our detailed Cloud Email Report (Updated: April 2025).

Buyer's Guide

Cloud Email

April 2025

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Helped 848,989 peers since 2012

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Mindshare comparison

As of April 2025, in the Cloud Email category, the mindshare of Constant Contact is 1.2%, down from 1.5% compared to the previous year. The mindshare of Mailgun is 9.5%, up from 8.2% compared to the previous year. The mindshare of SendGrid is 20.1%, up from 15.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Cloud Email

Featured Reviews

Dan Gospe

Chief Operating Officer, and HIPAA Privacy Officer at dmi Networking

Gives us a more professional face to our clients

Sometimes, you will be typing in a text box and hit the backspace, but the website will think you meant to go back a page. Basically, you end up losing work when this happens and it is hard to predict. Thus, I have learned to save often and every time I finish a piece of content that I like. I do wish this could be solved, but it is more of a browser issue than a Constant Contact issue. It would be cool if they made an actual app with their own skin to solve the issue with browser incompatibilities.

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Christopher Justice

Vice President of Operations at BL.INK

Reliable, easy to set up, and offers good email-sending capabilities

We use the solution for high-volume email sending for event management. Simple and perfect for what we need. It has helped us with email deliverability. The email-sending capabilities are great. It's a very easy product to set up. The solution is stable. It is scalable. The solution needs…

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Rastu Singh

Technical Consultant - Email Deliverability at Adobe

Clean and simple to use with good integration capabilities

There are lots of things that are quite good with SendGrid as compared to other platforms. For example, it is very easy to set up, and it is very clean and simple to use. The email integration is fairly easy, and I can say it is reliable. It also allows you to implement services from other platforms as well. So you can have multiple things in a single place. We're using the API. They provide certain add-ons, like Azure add-ons. You can connect with Azure as well. They have decent support in terms of any issues. They have a nice dashboard as well. It gives almost all information in a single place, and it is scalable.

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Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros

"It is fun to design your newsletter based on the content you would like to deliver."

"It's a very easy product to set up."

"Easy API documentation is the most valuable feature of SendGrid, including its deliverability rate."

"The solution scales well."

"The API side of things is valuable. It is flexible enough to handle pretty much anything that needs to be done in an automated manner."

"It is a stable and scalable solution."

"The most valuable feature is the conditions in automation."

"It is easy to set up."

"My integration team likes that it's very easy to integrate and very easy to automate based on activities that happen on our core banking application."

"They have pretty good support in terms of any issues."

Cons

"Sometimes, you will be typing in a text box and hit the backspace, but the website will think you meant to go back a page. Basically, you end up losing work when this happens and it is hard to predict."

"The solution needs better templating and email validation."

"Maybe they could have a mobile application to give to admins, so they could see some insights related to the data."

"SendGrid has room for improvement in the UI/UX or dashboard usability for users. Another area for improvement in the tool is its conditional logic facilities. The response time of SendGrid technical support needs improvement."

"The reporting part needs improvement."

"SendGrid is a great solution. I don't have any areas of improvement."

"They should make the solution more user-friendly."

"A long time ago, I may have had an issue, and I had to wait for support, which wasn't that helpful. However, that was a very long time ago. Overall, I've had a good experience."

"The biggest problem that we have faced is with the authentication during login. For certain people, SendGrid requires MFA, which is good as a security feature, but it doesn't always work in all geographies. We've got people and users who are based in Nigeria, and some of those people had real trouble logging into SendGrid because the MFA wouldn't send codes to people on their numbers. The security mechanism that they use for login doesn't work in all geographies."

"The contact limit alerts need to be improved."

Pricing and Cost Advice

"The cost is fair, and you end up making enough in sales to pay for it."

"We pay $80 a month to use the solution."

"The solution is relatively inexpensive."

"We are using the Advanced plan,10K. That is about $100 per month but sometimes we do go over the limit of the plan."

"The basic plan starts at €90 per month."

"Its cost can vary. It can go as low as $10 or $15 to $1,000 depending on how much you use it."

"My company pays for SendGrid monthly, and though I cannot share the amount, my feedback is that the vendor should accept other modes of payment apart from a credit card."

"I use the essential plan which is $20 a month. After that, we use the pro which is $90 a month, and had all our costs bundled in."

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Top Industries

By visitors reading reviews

No data available

Manufacturing Company

12%

Government

10%

University

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

Comparisons

MailChimp vs Constant Contact

Compared 100% of the time

More Constant Contact Competitors

MailChimp vs Mailgun

Compared 33% of the time

ZeptoMail vs Mailgun

Compared 18% of the time

Amazon WorkMail vs Mailgun

Compared 9% of the time

More Mailgun Competitors

ZeptoMail vs SendGrid

Compared 34% of the time

MailChimp vs SendGrid

Compared 20% of the time

Zoho Campaigns vs SendGrid

Compared 8% of the time

AuthSMTP vs SendGrid

Compared 7% of the time

Fortinet FortiMail Cloud vs SendGrid

Compared 7% of the time

More SendGrid Competitors

Product Reports

Buyer's Guide

Cloud Email

April 2025

Download Constant Contact product report

Buyer's Guide

Cloud Email

April 2025

Download Mailgun product report

Buyer's Guide

SendGrid

March 2025

Download SendGrid product report

Overview

Constant Contact is an all-in-one email marketing platform that helps organizations effectively engage with their audience. Its primary use case is to create and manage email campaigns, allowing businesses to reach their customers and prospects with targeted messages.

The most valuable functionality of Constant Contact lies in its user-friendly interface and robust features. It offers a wide range of customizable email templates, making it easy to create professional-looking emails without any coding knowledge. The platform also provides tools for list management, segmentation, and contact organization, ensuring that messages are delivered to the right audience.

Constant Contact's automation capabilities are another standout feature. Users can set up automated email series, triggered by specific actions or events, to nurture leads and build customer relationships. This functionality saves time and effort by delivering personalized content at the right time, increasing engagement and conversions.

Furthermore, Constant Contact offers comprehensive reporting and analytics, allowing organizations to track the success of their email campaigns. Users can monitor open rates, click-through rates, and other key metrics to gain insights into their audience's behavior and optimize future campaigns.

Constant Contact

Powerful APIs that enable you to send, receive and track email effortlessly.

Mailgun Technologies

SendGrid is a versatile email delivery platform for sending transactional and marketing emails, with APIs for connecting with existing email marketing software. It is used by Fintechs, e-commerce stores, and event management platforms for sending high volumes of emails while following compliance requirements.

The platform offers easy integration and automation, a stable and scalable solution, flexible API, and a high deliverability rate. SendGrid has helped organizations automate communication with clients for commercial campaigns, marketing activities, and transactional tasks, and is the preferred way to communicate with clients for guaranteed delivery.

Twilio

Sample Customers

Pajama Program

Stripe. GitHub, Heroku

ScoutMob

Find out what your peers are saying about MailChimp, Amazon Web Services (AWS), Twilio and others in Cloud Email. Updated: April 2025.

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