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SMTP2GO Transactional Email Software logo
SMTP2GO
Worldwide SMTP Delivery — Reliable & Scalable Email Delivery Service & API.
4.7

( 217 )

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SMTP2GO Reviews: 4.7/5 — Highly Rated

SMTP2GO Overview
What is SMTP2GO?

SMTP2GO is a cloud-hosted email delivery platform that provides secure, reliable SMTP relay and RESTful API-based sending for transactional, marketing, and bulk email. The service emphasizes deliverability (DKIM/SPF, sender verification, blacklist monitoring, feedback loops), reporting and analytics (bounces, opens, clicks), global infrastructure with regional data centres (US, EU, AU), subaccount/agency support, and integrations/OSS SDKs for common programming languages.

Company SMTP2GO
Year founded 2006
Company size 11-50 employees
Headquarters Christchurch, Canterbury, New Zealand
SMTP2GO Categories on Findstack
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Ask Questions about SMTP2GO
What SMTP2GO is best for?
How does SMTP2GO compare to SMTP.com?
What are the pros and cons of SMTP2GO?
SMTP2GO Product Details
Capabilities
API
Segment
Small Business
Mid Market
Freelancer
Enterprise
Deployment Cloud / SaaS / Web-Based
Support Chat, Email/Help Desk, FAQs/Forum, Knowledge Base, Phone Support
Training Documentation
Languages English, Persian, Vietnamese
SMTP2GO Pros and Cons
Pros
  • Strong deliverability features (DKIM/SPF, feedback loops, blacklist monitoring, spamtrap detection)
  • Global infrastructure with regional data centres and data-residency options
  • Flexible sending via SMTP relay and RESTful API
  • Open-source SDKs and official plugins (WordPress, cPanel)
  • Generous free tier (1,000 emails/month)
Cons
  • Free plan has strict hourly/daily caps and short reporting retention
  • Limited native marketing automation/campaign management (segmentation, advanced workflows, A/B testing)
  • Add-on costs (extra IPs, archiving, SMS) can increase total spend
  • UI full localization beyond English / plugin locales not clearly verified
SMTP2GO Features
A/B Testing
AI features (content generation, send-time optimization)
Analytics/Reporting
API Integration
API rate limiting / API key permissions
API SDKs (official libraries)
Attachment size limits
Attachments support
Attachment Support
Batch sending (multiple recipients / versions)
Bounce Management
Contact Management
Disclaimer
Our research is curated from diverse authoritative sources and meant to offer general advice. We don’t guarantee that our suggestions will work best for each use-case, so consider your unique needs when choosing products and services. Feel free to share your feedback.
Last updated: October 09, 2026
SMTP2GO Transactional Email Software logo
217 SMTP2GO Reviews
4.7 out of 5
Small Business (50 or fewer emp.)
Mar 25, 2021
 Source
Overall Rating:
5.0
LD
Liam D.
It Consultant
Share
"World class email service"
What do you like best about SMTP2GO?

It's simplicity and reliability are perfect. Not once had an issue with delivery and the additional insights are great

What do you dislike about SMTP2GO?

Not much to report here. Does as advertised. Not sure how it improve it either

What problems is SMTP2GO solving and how is that benefiting you?

Smart connectors for hosted email services and application reports for backups and reports without provisioning a whole separate mailbox

Mid Market (51-1000 emp.)
Jan 28, 2021
 Source
Overall Rating:
5.0
RF
Riccardo F.
Business Process Manager
Share
"Excellent external SMTP"
What do you like best about SMTP2GO?

It is easy to use, really good support and amazing dashboard.

What do you dislike about SMTP2GO?

IP addresses changes so its hard to put in email security

What problems is SMTP2GO solving and how is that benefiting you?

Allowing us to scan to e-mail, etc.

Mid Market (51-1000 emp.)
Dec 21, 2020
 Source
Overall Rating:
5.0
JB
Jon B.
It Manager
Share
"Hassle free service with excellent customer support"
What do you like best about SMTP2GO?

Most reliable SMTP service we have ever come across with immediate customer support. Their online portal is much more responsive and feature rich when compared to other competitors.

What do you dislike about SMTP2GO?

Nothing at all, we are receiving an excellent level of service.

What problems is SMTP2GO solving and how is that benefiting you?

Had a couple of minor problems with email delivery. Used their excellent email tracking feature to prove that emails were being delivered to another third party who were at fault.

Small Business (50 or fewer emp.)
Dec 17, 2020
 Source
Overall Rating:
5.0
MJ
Miguel Angel J.
Founder
Share
"Great solution for surveillance and home monitoring"
What do you like best about SMTP2GO?

Can use the port 25 directly. some applications or appliances do not let you use custom ports, other services do not offer this capability. Also some services requires you to use https, configure certificates, and in that case for this data that is not that sensitive and is for home, do not need so much features.

What do you dislike about SMTP2GO?

Nothing, in general the current features are good and work as intended

What problems is SMTP2GO solving and how is that benefiting you?

Surveillance. I have cameras of different brands at home and also have some products of different brands that i made work together with some scripts, then i need to receive emails with photos, sound clips or videos of what is happening. SMTP2GO helped me to simplify everything using emails instead of notifications or custom applications. Only configure to send an email using SMTP2GO and can receive the data from the cameras or my scripts.

Mid Market (51-1000 emp.)
Nov 24, 2020
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"excellent"
What do you like best about SMTP2GO?

Perfect service: there are no other adjectives. Careful staff, prompt answers, totally collaborative and problems resolving. what more could you ask for? Thanks

What do you dislike about SMTP2GO?

no complaints so far. I just need more character

What problems is SMTP2GO solving and how is that benefiting you?

Good integration with Azure SaaS

Small Business (50 or fewer emp.)
Nov 23, 2020
 Source
Overall Rating:
5.0
IH
Ian H.
Founder
Share
"Very reliable service"
What do you like best about SMTP2GO?

Its no-nonsense approach to allowing outgoing mail in tricky situations. We have used SMTP2go on a range of devices and software applications where getting a regular SMTP service fails.

What do you dislike about SMTP2GO?

There is very little to dislike with the SMTP2go service - I can't think of anything specific.

What problems is SMTP2GO solving and how is that benefiting you?

Where customers have legacy or outdated systems, we find SMTP2go faultless with allowing us to send out email without specific security requirements. The ability to add their servers to the SPF records means we have very few issues.

Mid Market (51-1000 emp.)
Nov 19, 2020
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Best way and perfect to send email with all those SMTP restriction of any internet provider"
What do you like best about SMTP2GO?

Fast and reliable and very transparent to my user.

What do you dislike about SMTP2GO?

Need an email when precense of bounce email

What problems is SMTP2GO solving and how is that benefiting you?

Control my volume of email and notice who is my biggest user

Small Business (50 or fewer emp.)
Nov 19, 2020
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"SMTP2GO has been our go to outgoing mail-server for all of our industrial automation."
What do you like best about SMTP2GO?

Simple online interface and reliable service.

What do you dislike about SMTP2GO?

A while back they were looking at discontinuing one of our servers. They have since kept it open to minimize a change over process on our end.

What problems is SMTP2GO solving and how is that benefiting you?

An independent mail server for automation installations installed all over North America.

Small Business (50 or fewer emp.)
Nov 19, 2020
 Source
Overall Rating:
5.0
Joerg A. avatar
Joerg A.
Manager
Share
"Reliable e-mail sending"
What do you like best about SMTP2GO?

If you need reliable email sending, this service is the way to go. Never had a problem, easy to configure and very reasonably priced. Highly recommended for anybody sending automated or high volume of e-mails.

What do you dislike about SMTP2GO?

Can't actually think of anything. Everything just works "out of the box".

What problems is SMTP2GO solving and how is that benefiting you?

Many corporate mail servers are hard to set up for automated outgoing emails such as notifications, account statements, invoices, etc. With smtp2go this is as easy as 1, 2, 3.

Small Business (50 or fewer emp.)
Nov 19, 2020
 Source
Overall Rating:
5.0
Chepe N. avatar
Chepe N.
Producer
Share
"Excelent service"
What do you like best about SMTP2GO?

After looking for a reliable email service I found SMTP2GO, no complains so far after several years of great service.

What do you dislike about SMTP2GO?

Nothing, everything works as expected and the way I like, no problems at all

What problems is SMTP2GO solving and how is that benefiting you?

Email sending problems, gmail, hotmail, outlook... always blocking my email sent by my sever.

Small Business (50 or fewer emp.)
Nov 19, 2020
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"SMTP2GO - The easy to use email server"
What do you like best about SMTP2GO?

Th sign up, setup and configuration is very simple. Getting started was easy. The reporting is very good too. The support team are very quick to respond to any issue or question.

What do you dislike about SMTP2GO?

Sometimes the billing through Fastspring is a bit flakey. Changing billing details has proved a little cumbersome on occasion.

What problems is SMTP2GO solving and how is that benefiting you?

We find it very simple to integrate into our ERP system. It is somewhat easier than using MS365. The biggest benefit though is the reporting on success and failure. We can respond to failed email delivery very quickly which in turn assists to maximize our billing recovery.

Small Business (50 or fewer emp.)
Nov 16, 2020
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Great and simple!!"
What do you like best about SMTP2GO?

Simple and fast very easy to use never been an issues

What do you dislike about SMTP2GO?

nothing. I can't find anything just a pleasure.

What problems is SMTP2GO solving and how is that benefiting you?

spam stopping makes it eazy to send out mass email

Mid Market (51-1000 emp.)
Nov 10, 2020
 Source
Overall Rating:
5.0
GJ
Glenn J.
Founder
Share
"SMTP2GO is a must for small to large organizations"
What do you like best about SMTP2GO?

SMTP2GO is very scalable; such that your team can start small and ramp up a plan as required. Monthly billing is very reasonable. SMTP2GO offers this service at a higher level than most Internet Service Providers.

What do you dislike about SMTP2GO?

We been using SMTP2GO since September 2017 and not observed any dislikes of their service

What problems is SMTP2GO solving and how is that benefiting you?

SMTP2GO allows us to send emails through their SMTP Server regardless of the internet provider. It will verify the company domain, reduces chances of your email being see through a flagged spam SMTP server, and optics into usage of the service across the organization.

Small Business (50 or fewer emp.)
Nov 10, 2020
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Excellent SMTP Service"
What do you like best about SMTP2GO?

It was easy to setup and was up and running within a few minutes. No problems with delivery and love the weekly reports which are useful to see the delivery success rate.

What do you dislike about SMTP2GO?

Nothing - I think its great - I will be recommending this service to anyone who is in the market for a SMTP relay.

What problems is SMTP2GO solving and how is that benefiting you?

Great email delivery to our clients - emails landing in the inbox of clients due to the trust level of the smtp2go servers.

Small Business (50 or fewer emp.)
Nov 10, 2020
 Source
Overall Rating:
5.0
GA
George A.
Founder
Share
"Absolute best solution I have used, fantastic price compared to competitors as well"
What do you like best about SMTP2GO?

I like the search functionality of it and I'm able to find what I need very quickly. I have to monitor it constantly for our business and it helps me ensure that their aren't mistakes on our end, and if their are I can track them down and fix them. It also helps by letting me know if something maybe wrong on our clients side of things, and by being able to offer them assistance and guidance and really go the extra mile with customer service.

What do you dislike about SMTP2GO?

Honestly I don't dislike anything from this product. I find that it meets my needs and that it works exactly as intended. If there was anything I wanted it would be the ability to view the charts in different formats, for readability for myself and for meetings, some people respond better to different visual charts and If I didn't have to take the time to generate my own that would save me more time, which saves money.

What problems is SMTP2GO solving and how is that benefiting you?

It helps our business confirm that our messages are getting where they need to be. As a business that is all about messages, emails, texts etc, its absolutely vital that our customers are getting the message as intended. This program has helped me track down bugs on government clients after they have updated their systems. Being able to see in real time as our messages go out and are confirmed properly brings peace of mind to my boss, and our customers know that we are ensuring nothing is being lost along the way. Thanks to SMTP2GO having gone the extra mile with clients we have obtained more business from our clients which has made the product pay for itself.

Mid Market (51-1000 emp.)
Sep 17, 2020
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Great simple SMTP relay"
What do you like best about SMTP2GO?

The simplicaity of the service plus real-time data

What do you dislike about SMTP2GO?

A lower tier pricing package for clients who don't need to send many emails

What problems is SMTP2GO solving and how is that benefiting you?

Don't need to use client's mail service or put their domain at risk of being hijacked for spam and later blacklisted

Small Business (50 or fewer emp.)
Sep 17, 2020
 Source
Overall Rating:
5.0
AA
Andrew A.
Founder
Share
"Great service, keeps our hundreds of websites connected!"
What do you like best about SMTP2GO?

I like how easy it is to set up on WordPress sites and how quickly it starts working. It really helps with our entire business, it helps keep our clients connected, and it is very easy to use throughout hundreds of different websites with dozens of different industries across multiple countries and parts of the world.

What do you dislike about SMTP2GO?

I dislike having non-secure connection as default. It would be great if by default they forced you to use TLS so to discourage sending unsecure mail. Or just offer the API version as the default and make sure everyone is aware you can use a API version. The interface is also a bit off if you're searching for sending domains to add. If you type in the box to add a domain and it already exists, it just goes to that domain but it's not clear if it just added the domain or if it was already added.

What problems is SMTP2GO solving and how is that benefiting you?

We wanted a reliable way to send emails for all of our client websites, and SMTP2Go never misses a single email! This service is great, it really helps us with all our daily tasks and we can really help all our clients stay connected.

Small Business (50 or fewer emp.)
Sep 16, 2020
 Source
Overall Rating:
5.0
AW
Alex W.
Founder
Share
"Excellent, intuitive mail solution"
What do you like best about SMTP2GO?

Rapid implementation, ease of use, reliable

What do you dislike about SMTP2GO?

Nothing at this time. Functionality largely invisible as you'd want with mail system

What problems is SMTP2GO solving and how is that benefiting you?

Allowed us to hook our CRM up to email in minutes

Mid Market (51-1000 emp.)
Sep 16, 2020
 Source
Overall Rating:
5.0
MB
Michael B.
Founder
Share
"Impressed client"
What do you like best about SMTP2GO?

Reliable uninterrupted service. I travel worldwide 9 months a year and use wifi services worldwide. I use the SMTP service on 9 of my email accounts without fail.

What do you dislike about SMTP2GO?

None found so far. Everything works for the services I require.

What problems is SMTP2GO solving and how is that benefiting you?

Uninterrupted uptime, use SMTP on my email accounts with no issues.

Small Business (50 or fewer emp.)
Aug 28, 2020
 Source
Overall Rating:
5.0
FW
Frédéric W.
Chef D'entreprise
Share
"Pro service"
What do you like best about SMTP2GO?

The user interface is very modern and useful. The system is very easy to configure and work without any troubles. I also appreciate the very fast support when needed.

What do you dislike about SMTP2GO?

Too early warning when near to reach limit. And message suggest strongly to upgrade while overquota is allowed

What problems is SMTP2GO solving and how is that benefiting you?

I was first using SMTP2GO with a phplist system but now I do use it for common email especialy with domestic gmail and my own domains.

Small Business (50 or fewer emp.)
Jan 07, 2020
 Source
Overall Rating:
5.0
Henrik A. avatar
Henrik A.
Ceo / Owner
Share
"SMTP2go offers great services at a great pricing"
What do you like best about SMTP2GO?

Our e-mail never ends up in the recipients spam box. Fair pricing.

What do you dislike about SMTP2GO?

We had some issues with the exim mail server, however this was swiftly fixed after talking to support

What problems is SMTP2GO solving and how is that benefiting you?

Never does our newsletters or invoices end up in our recipients spamfilter anymore.

Enterprise (> 1000 emp.)
Dec 21, 2019
 Source
Overall Rating:
5.0
Harsh G. avatar
Harsh G.
Programmer Analyst
Share
"Fast and Reliable application"
What do you like best about SMTP2GO?

- Helps you to get the insights of ones business, with its improved dashboard. - it is the well-managed, scalable and reliable email delivery system. - they do have best reporting system which uses the graphical interpretation. - Transactional email tracking has become so simple and efficient with this. - They have good customer support system that too 24*7, hence they resolve your issue very fast

What do you dislike about SMTP2GO?

- We do experience high no of bounce backs sometime, but that happens little often. - As, its not so frequent, rest of the things are good - They should come up with more affordable plans

What problems is SMTP2GO solving and how is that benefiting you?

- Our business needs a system which takes no overhead to use it, no special requirement for skilled specialist always siting and monitoring it. - This saves a Hugh amount for hiring specialist for this work as this application can do all work. - It also allows to merge different IPs with same mailing servers. which is the scenario in my business case. - Overall this application helps a lot in saving money and boosting up the business.

Small Business (50 or fewer emp.)
Dec 20, 2019
 Source
Overall Rating:
5.0
GD
Gabriel D.
Founder
Share
"Excelent SMTP service"
What do you like best about SMTP2GO?

I use itas a gateway for my Exchange server. And I get reports about every single email. Great! It is also really worth the price. Ive been using it for years and will keep on using it for years.

What do you dislike about SMTP2GO?

There is nothing I dislike. It works fine.

What problems is SMTP2GO solving and how is that benefiting you?

Our server was considered a spam sender. Never again.

Mid Market (51-1000 emp.)
Dec 20, 2019
 Source
Overall Rating:
5.0
Satyam g. avatar
Satyam G.
Software Engineer
Share
"Serves your purpose at an affordable price"
What do you like best about SMTP2GO?

Its the best email management software available, You have hell lot of things to do with it, it takes care of your all automatic mail related headaches. You don't need to piss off your head in this. Everything is managed by application itself

What do you dislike about SMTP2GO?

I find this application worth every penny, I don't find any dislike feature in this. Still they can improve in no of bounce back issues.

What problems is SMTP2GO solving and how is that benefiting you?

I am just new to this SMTP, still I love this application. I thing realised is every thing is well managed on your dashboard.

Enterprise (> 1000 emp.)
Dec 20, 2019
 Source
Overall Rating:
5.0
dileep k. avatar
Dileep K.
Software Engineer
Share
"Best and reliable solution"
What do you like best about SMTP2GO?

- This service will enhance the business impact, Huge number of server to keep you running always. - hardware as well as software requirements are not specific. - this service is reliant and fast

What do you dislike about SMTP2GO?

service is doing great job for transactional email related business. I don't find any dislikes or cons

What problems is SMTP2GO solving and how is that benefiting you?

Currently we use SMTP2Go for sending mails for the registration done on our site. The automatic mailer service is so helpful, no need of overhead task.

Enterprise (> 1000 emp.)
Dec 20, 2019
 Source
Overall Rating:
5.0
Soumya Ranjan M. avatar
Soumya Ranjan M.
.Net Developer
Share
"Truely proves best transactional mailing platform"
What do you like best about SMTP2GO?

* Easy to configure nature makes this application very user friendly. Best piece of work in UI & UX. Developers out there would really love as the dashboard is well organised with controls being easily accessible. * Graphical representation gives intuitive insight about the usage. * Application servers are spread over different region hence the they are always online servers less change of bounce back. * Your issues are resolved in no time as their support time work really fast to resolve your problems.

What do you dislike about SMTP2GO?

* They should provide some benefit in their subscription plans, for the ones who has been using this application since long. * I really don't feel any such major issue to be worked on, I believe they should continue their fast and reliable service.

What problems is SMTP2GO solving and how is that benefiting you?

This application really helps me to send the daily reports to the users as I don't own any SMTP servers. SMTP2Go really works for my business requirement.

Enterprise (> 1000 emp.)
Dec 20, 2019
 Source
Overall Rating:
5.0
Surabhi C. avatar
Surabhi C.
Engineer
Share
"Surely saves time and money"
What do you like best about SMTP2GO?

- Best reliable and trackable email delivery platform for any business, really serves the marketing purpose. - Online support team is available 24/7, you can expect quick reply and resolution to your problem. - Since its a web based interface you can easily integrate it with your existing system where you may be using shared IPs, Also they don't have any specific software and hardware dependency. - The have easy to use system no complicated process to learn , with superb user interface.

What do you dislike about SMTP2GO?

I don't think there is any dislike for such a wonderful service. This service does exactly what is expected and everything what is needed.

What problems is SMTP2GO solving and how is that benefiting you?

I have been using this service for my existing project where email delivery is must for smooth running. I can go without any overhead work, send mails to the customers. They do send mails with unsubscribe options for the customers, if they don't want to receive mails that option will surely help them.

Small Business (50 or fewer emp.)
Dec 19, 2019
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Smtp2go will solve your mail sending problems once and forever"
What do you like best about SMTP2GO?

When I am sending emails using SMTP2GO I am sure the mail will be received (if the recipient is ok)

What do you dislike about SMTP2GO?

I don't find disadvantages. It is played, yes, but it worth its money.

What problems is SMTP2GO solving and how is that benefiting you?

Our mail server is constantly having problems with blacklists and other that result in mails of our business clients being rejected.

Small Business (50 or fewer emp.)
Dec 19, 2019
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Simple, Clean and Easy"
What do you like best about SMTP2GO?

We migrated from an on premise email server to SMTP2GO a couple of years ago now. We write town and parish council software and wanted a cloud service that allowed our users to email out documents and files from our Software as a Service solution. Keep up the good work SMTP2GO and we look forward to the seeing new features and services moving forward in the future.

What do you dislike about SMTP2GO?

At the moment we are struggling to find to many issues with the service. One think that was a little frustrating was the changing of the records that needed to be adding. We deal with various IT Departments, that are not always willing or helpful. Once we'd got them to update the domain records once, which in some instances takes a while, to get them to go through the 2nd lot of changes for the same service has proved difficult for some.

What problems is SMTP2GO solving and how is that benefiting you?

With the solution that we have through SMTP2GO, this has allowed us to easily manage and setup existing clients and have also now included the email delivery service as standard with new clients moving forward. Another huge benefit that our customers are experiencing since we moved our service over, is that the they now have the ability to send emails from their own domain. This has had not only a huge impact on the providing professional email functionality within all of our modules, but it with users being able to use of their existing emails to now send out from has been very well received from our previous clients.

Enterprise (> 1000 emp.)
Dec 19, 2019
 Source
Overall Rating:
5.0
SP
Shriram P.
Software Engineer
Share
"one of the best trackable email delivery platform"
What do you like best about SMTP2GO?

This platform is really fast and reliable, viewing your delivered report is really well managed. These business emails have inbuilt unsubscribe me option for the costumers, who receive such mails. They can anytime unsubscribe from the email letters. Their email tracking feature is really worth it, they solve most of your problems on their own.

What do you dislike about SMTP2GO?

Emails are bounced backed.Required to improve in data recovery as well as in threat protection area. Needs more updated spam filters.

What problems is SMTP2GO solving and how is that benefiting you?

Sending bulk emails such as advertising , offer related mails to the customer. These mail are send regular