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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 12, 2026
SMTP2GO Transactional Email Software logo
217 SMTP2GO Reviews
4.7 out of 5
Small Business (50 or fewer emp.)
Nov 22, 2017
 Source
Overall Rating:
4.5
Susheel S. avatar
Susheel S.
Director
Share
"Mail Delivered - Guaranteed"
What do you like best about SMTP2GO?

The process is very simple to setup, easy to configure for sending outgoing mail (i.e. Outlook, Web API) Arching sent mail option is Awesome!

What do you dislike about SMTP2GO?

no option for putting advance payment in wallet, as archiving is charged basis of usage and then every month you need to pay from credit card. if option available to add money in wallet and deduction as per usage will certainly help.

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

We've a HRMS solution and is in cloud, from our tool lot of email notifications are triggered (when an employee apply for leave and email notification is sent to reporting manager for approval or rejection), the benefit we get with SMTP2GO is that the mails are delivered promptly without any fail and also if some query to analyse we can refer past transaction record.

Small Business (50 or fewer emp.)
Nov 22, 2017
 Source
Overall Rating:
4.5
RS
Raymond S.
Président
Share
"SMTP2GO is a reliable solution for sending emails"
What do you like best about SMTP2GO?

-It works all the time -Our delivery rate is very good -The user dashboard makes it easy to manage several account

What do you dislike about SMTP2GO?

-Integration with third party app or extensions not always easy

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

We send critical info an update to people registered to an event weekly (several thousands per week) Our email are sent by a trustable entity so our delivery rate is higher

Enterprise (> 1000 emp.)
Nov 22, 2017
 Source
Overall Rating:
4.5
MB
Mark B.
Global Infrastructure Manager
Share
"Great product does what it says on the tin"
What do you like best about SMTP2GO?

Easy to setup, manage, uses DKIM and SPF to reduce/remove spam.

What do you dislike about SMTP2GO?

Billing took a while to sort out when we upgraded to 500k emails.

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

Outsourcing our email broadcasts.

Small Business (50 or fewer emp.)
Nov 21, 2017
 Source
Overall Rating:
4.5
AG
Verified Reviewer
Founder
Share
"Very easy to administer, and great pricing. Much easier than managing your own mail server"
What do you like best about SMTP2GO?

Very good value. Works out much cheaper than managing your own mail server. Much more reliable than managing my own mail server too. It's also much easier to administer, even if you have very basic tech skills Flexible SMTP authorization options

What do you dislike about SMTP2GO?

For our needs, there is nothing I have come across

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

Outgoing mail server for eCommerce platform. Outgoing mail for office staff, Very quick to get going. Minimal time required for management.

Mid Market (51-1000 emp.)
Nov 21, 2017
 Source
Overall Rating:
4.5
AG
Verified Reviewer
Founder
Share
"Goog SMTP Server"
What do you like best about SMTP2GO?

The service provided by SMTP2GO is excellent, all time is online and the front end is friendly and easy to manage.

What do you dislike about SMTP2GO?

by now nothing, all the system is excellent.

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

send the internal email in my company and manage the campagnes.

Small Business (50 or fewer emp.)
Nov 21, 2017
 Source
Overall Rating:
4.5
MW
Mike W.
Founder & President
Share
"Very happy with the features and service"
What do you like best about SMTP2GO?

We were in a pinch for sending emails as our service provider wasn't stable, lost emails, and eventually discontinued their service. It was incredibly easy to set up SMTP2GO and start using immediately to replace the old solution.

What do you dislike about SMTP2GO?

We realize that no person or service is perfect. That being said, we were disappointed when SMTP2GO had an issue sending emails over the course of an hour or two. Unfortunately the emails were not sent and there was no way for them to re-send the messages from their end. We had to spend a lot of time manually figuring out and re-sending the necessary emails. Even the limited outage caused us a lot of cleanup since our service is running and sending emails 24 hours a day.

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

It is nice having a reliable way of sending emails from our SaaS application. Not only that, when people say "we didn't receive the email," it is very easy to search SMTP2GO's admin portal for the user's email address and see if the email was A) even sent from our application, B) sent by our application and accepted by their email server (which then indicates the problem is on their end), or C) sent by the application and rejected (which is also commonly caused by a problem on their end). Having to do this type of research isn't something we have to do often, but it is nice to have the reporting feature available to us when needed.

Enterprise (> 1000 emp.)
Nov 20, 2017
 Source
Overall Rating:
4.5
AG
Verified Reviewer
Founder
Share
"Reliable email relay"
What do you like best about SMTP2GO?

A fair priced email relay service, would recommend

What do you dislike about SMTP2GO?

Can be quite aggressive with blocking hotmail

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

Ability to send from multiple domains a great help

Enterprise (> 1000 emp.)
Nov 20, 2017
 Source
Overall Rating:
4.5
AG
Verified Reviewer
Founder
Share
"SMTP2GO Review"
What do you like best about SMTP2GO?

The best feature with SMTP2GO is the ease of use and monitoring of emails. We are easily able to track

What do you dislike about SMTP2GO?

No real dislikes at this time. We have had no issues and all trouble tickets have been responded to in a very quick response.

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

We are using SMTP2GO for our intranet emails and scan from our office scanners. This is helping to take some of our strain off of our on prem email servers.

Mid Market (51-1000 emp.)
Nov 20, 2017
 Source
Overall Rating:
4.5
MH
Mark H.
Vice President Of Marketing
Share
"Great service for sending large volumes of email"
What do you like best about SMTP2GO?

Easy to use - just plugged our SMTP2GO credentials into our emailing program and it reliably sends - never had a problem.

What do you dislike about SMTP2GO?

Nothing to dislike with what I use it for - but I don't really use any special features.

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

Needed to send out 200,000 email a week through an old desktop email programs - this service plugged in perfectly.

Small Business (50 or fewer emp.)
Sep 28, 2023
 Source
Overall Rating:
4.0
RJ
Rodney J.
Founder
Share
"Easy to use"
What do you like best about SMTP2GO?

Simple and straight forward UI. Easy to work with and setup. Support is fast and get back to you in a timely manner. Integration has been easy and the Features like archiving are great for continuity.

What do you dislike about SMTP2GO?

I think the lack of local servers is what i dislike.

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

Outgoing mail needs to be checked constantly and its good to have a easy to use platform to identify errors when mails go out. It also gives me a good idea on the health of my Mail Server and reachability of mail going out. It also doesnt hurt that it saves my online ip reputation.

Small Business (50 or fewer emp.)
Jan 22, 2022
 Source
Overall Rating:
4.0
Lars G. avatar
Lars G.
Owner
Share
"SMPT2GO for everyone"
What do you like best about SMTP2GO?

I like the ease of adding new users in a very short time. The multiple ports and protocols are a big pro. Also the stats / reports are nice to have. They notify and think with you when they detect a spam pike from a certain domain.

What do you dislike about SMTP2GO?

You cannot assign a webhook to a single user.

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

I experienced problems with sending mail from my own server. Often they didn't arrive. Therefore I wanted to have a solid worry-free, reliable solution for sending mail instead of configuring and maintain a smtp-server myself. The quality is very good for the prices. I would recommend SMPT2GO to everyone.

Small Business (50 or fewer emp.)
Nov 13, 2020
 Source
Overall Rating:
4.0
LM
Lennart M.
Founder
Share
"Very satisfied with the product"
What do you like best about SMTP2GO?

Ease of use and being able to have insight in to what mail is sent and received (or not received).

What do you dislike about SMTP2GO?

Nothing specific. Would be nice if prices we're a little lower or if free tier had a higher limit.

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

I use SMTP2GO to send e-mails from websites we've built. I usually have a lot of problems with mail being marked as spam and this is never an issue with SMTP2GO

Small Business (50 or fewer emp.)
Sep 22, 2020
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
"Channel Manager"
What do you like best about SMTP2GO?

Target the right market and segment and give consultancy when needed

What do you dislike about SMTP2GO?

Need to look more into small segmentations, different interest

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

Reaching clients

Small Business (50 or fewer emp.)
Sep 17, 2020
 Source
Overall Rating:
4.0
BM
Brian M.
Founder
Share
"Essential for problematic SMTP servers"
What do you like best about SMTP2GO?

Ease of use and technical knowledge is not required to use. Great for use where SMTP servers are problematic.

What do you dislike about SMTP2GO?

I have not found anything I dislike at this time.

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

Client who had issues with SMTP server being very unreliable, SMTP2GO solved his problems until such time as we could move his hosting.

Small Business (50 or fewer emp.)
Sep 16, 2020
 Source
Overall Rating:
4.0
KP
Kevin P.
Kevin 'Poffenroth
Share
"An easy to use Email Solution"
What do you like best about SMTP2GO?

Simple. The interface is intuitive and well laid out. 1-2-3 Done. 1 created the account. 2 assign a password. 3 setup the ports. Test-Working. Takes 5 minutes, Start to Finish.

What do you dislike about SMTP2GO?

The dislike is actually a good thing. If there is an issue, the staff is on you fast and furious. Almost, too furious! Good thing really!

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

Was having issues finding a email server that was reliable and would support un-encrypted and encrypted messages. SMTP2GO support everything I through at it. Has allows me to consolidate my servers into one!

Small Business (50 or fewer emp.)
Dec 19, 2019
 Source
Overall Rating:
4.0
PD
Paul D.
Owner
Share
"Reliable SMTP delivery mechanism"
What do you like best about SMTP2GO?

Great monitoring tools that make it easy to track everything.

What do you dislike about SMTP2GO?

The pricing model for lower number of e-mails is quite coarse.

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

I need to send e-mails from dedicated devices with basic e-mail sending capabilities which I am sending out from cellular radios. The devices only support smtp delivery and the ISP for the cell network doesn't offer an e-mail server so I need a means to send out the e-mails. These are sent out to a gmail account via smtp2go.

Small Business (50 or fewer emp.)
Dec 16, 2019
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
"Straightforward well working platform"
What do you like best about SMTP2GO?

It is a reliable service and we did not experience any problems over the past years. Their control panel is also most useful in checking the status.

What do you dislike about SMTP2GO?

I honestly cannot find something. In the past we had to make sure that in our domain control panel that our identity was maintained, but that was only once.

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

We are sending some mass mails to clients with attachments , which would have great delays through our corporate IT structure for some reason. In this way it works perfect.

Small Business (50 or fewer emp.)
Dec 12, 2019
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
"Simple & Secure"
What do you like best about SMTP2GO?

I have been using SMTP2Go outbound email services for a number of my clients for over 5 years now. They are proactive in ensuring all the latest secure email technologies are employed yet keeping the setup and operation simple and straight forward.

What do you dislike about SMTP2GO?

Nothing, all good. I am not sure what its making me type more than I want to

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

Without SMTP2Go outbound mails service my customers email servers would require mych more upkeep, maintenance and security to ensure the latest compliance for outbound email

Small Business (50 or fewer emp.)
Dec 12, 2019
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
"Works as it should, no major complaints"
What do you like best about SMTP2GO?

Nothing stands out as best, but as mentioned, it works effectively.

What do you dislike about SMTP2GO?

nothing stands out as bad; nothing comes to my mind as poor or ineffective....

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

It has permitted me to send a lot of emails which my ISP provider does not permit.

Small Business (50 or fewer emp.)
Oct 29, 2019
 Source
Overall Rating:
4.0
IW
Iain W.
Tech
Share
"Like itIt"
What do you like best about SMTP2GO?

It has been very reliable for many years. Also it is very well priced

What do you dislike about SMTP2GO?

the web interface is quite slow and cumbersome to navigate around

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

Sending emails from home automation systems

Small Business (50 or fewer emp.)
Sep 03, 2019
 Source
Overall Rating:
4.0
Timo T. avatar
Timo T.
Software Architect
Share
"Reliable, long business history"
What do you like best about SMTP2GO?

Works as supposed to. Been using it since 2013 with no troubles. Good interface for actual management.

What do you dislike about SMTP2GO?

Getting to past purchases is somewhat tedious but doable.

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

Mail is being sent as we wish.

Small Business (50 or fewer emp.)
Aug 29, 2019
 Source
Overall Rating:
4.0
MH
Matt H.
Network Manager
Share
"Happy Mandrill Migrant!"
What do you like best about SMTP2GO?

SMTP2GO's transparent pricing structure, ease of use and web interface are great, but it's their ability to deliver to the inbox which makes me recommend them the most. I switched to smtp2go about 3 years ago and have been very pleased with both the service and support that I have received during that time. The service is fairly priced and I love the recent improvements to the bounce email setup and dashboard UI.

What do you dislike about SMTP2GO?

The API could be quicker and more advanced, but delivery via SMTP is quick and reliable.

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

As a small business, we used to use Mandrill for all our human-generated emails. When they announced they were moving to block this usage of their platform, we searched for ages and came across SMTP2GO.

Small Business (50 or fewer emp.)
Aug 28, 2019
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
"A Great Service"
What do you like best about SMTP2GO?

99% up. Easy to use. can use with 3rd party software without issue.

What do you dislike about SMTP2GO?

If there is a issue they are quite persistent, to the point of being annoying.

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

provides consistent email services. within minutes a new user can be added and be up and running.

Small Business (50 or fewer emp.)
Aug 27, 2019
 Source
Overall Rating:
4.0
DH
David H.
Systems Manager
Share
"A change from the usual"
What do you like best about SMTP2GO?

I've used several 'email server distributors' but SMTP2GO is the easiest to set up that I have found, as well as keeping me up to date with better ways to secure my emails so they nearly always get through

What do you dislike about SMTP2GO?

Not much really, the initial setup can seem to ask you for a lot if you are a novice

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

We keep our bulk email shots away from our O365 server and protect our reputation.

Small Business (50 or fewer emp.)
Aug 27, 2019
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
"Fast and good succcess rate for email delivery"
What do you like best about SMTP2GO?

i like the dashboard and the interface. easy to use and understand

What do you dislike about SMTP2GO?

i dislike when my limit is reached and i have to pay more

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

email delivery success rate and i can track emails easily in one click

Mid Market (51-1000 emp.)
Aug 27, 2019
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
""
What do you like best about SMTP2GO?

Not provided

What do you dislike about SMTP2GO?

Not provided

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

Not provided

Mid Market (51-1000 emp.)
Aug 03, 2018
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
"Simply works"
What do you like best about SMTP2GO?

Ability to use messaging in any IoT device with SMTP capabilities

What do you dislike about SMTP2GO?

Would like to have your billing practices changed.

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

Use SMTP2GO for error messaging with client devices that we cannot remote manage.

Mid Market (51-1000 emp.)
Nov 27, 2017
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
"Great Service"
What do you like best about SMTP2GO?

Email communication flows more smoothly, no interruptions or outages in our first year. Clients are happy their messages are delivered and we now have reporting to show them as well.

What do you dislike about SMTP2GO?

Nothing I can think of. The product just works

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

Our client was having outages sending nightly notifications and blaming us. We were able to show them the outages were not with our process but with end users blocking their messages as spam. The reporting from moving to SMTP2Go allowed us to show the messages sent by their server and then out of SMTP2Go. The rest was on the receiving party.

Mid Market (51-1000 emp.)
Nov 20, 2017
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
"Satisfied customer"
What do you like best about SMTP2GO?

I am happy with the timely response of the Technical support team when we have issues. Since we use the SMTP2GO API services exclusively, the types of issue we encounter are, for the most part extremely technical in nature and the SMTP2GO Software Support team do a good job in helping us solve issue quickly.

What do you dislike about SMTP2GO?

Previously, out Email Archive was maintained for an indefinite period and now it is a paid service. This fact is understandable, but I am not happy with it.

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

Our servers processes many thousands of email messages monthly. The volume of message requires we have an SMTP service that provides good performance and timely technical support to avoid prolonged backlogs of messages. SMTP2GO provide us with the support and performance we need at a reasonable price.

Enterprise (> 1000 emp.)
Nov 20, 2017
 Source
Overall Rating:
4.0
AG
Verified Reviewer
Founder
Share
"We value SMTP2GO"
What do you like best about SMTP2GO?

We use SMTP2GO at my organization and we are pleased with the services they provide and the ease-of-use of their product. We use it for a mass mailing system we have. We are otherwise using Google for our e-mail relay provider, but they have a cap on the number of e-mails any one address can send in a day. Needing to get messages out to many people at one time, we can't live with that. SMTP2GO provides tiered plans for number of e-mails you would need to send and it also wouldn't be the end of the world if we went over as there is a cheap rate for additional messages until we get the opportunity to change our plan, if need be. We value SMTP2GO's services.

What do you dislike about SMTP2GO?

We do not have anything at this moment where SMTP2GO does not provide adequate services.

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

We are able to send mass e-mails to people while our primary e-mail relay service has daily caps.