MailerSend, Inc. Reviews 

Very good tool, it took me just one day to learn how it works and get it actually working on production. The interface is so clean and every text and button is exactly where expected. Of course, it works fantastic and mails are delivered inmediately and the way they're configured (conditional statements saved my life, no need to create lots of templates). The API documentantion is also fantastic. Plus, the support team is really fast and gives very understandable explanations that can be used and they work! 10 out of 10.

Easy to use and understand, affordable, and support is great! Real people helping with problems.

I previously had an account with mailersend with no issues, then our company got acquired, so we closed the previous account and opened a new one with the new company name. We applied for approval, but it was rejected, so we applied again with more information, we were surprised that the account got suspended with the following message "We have not been able to determine that your account fully complies with our policies and community standards." Although we provided a screenshots from our previous account but still we got suspended regardless. Don't waste your time, they are clearly incompetent. You might have your account suspended in the middle of a big marketing campaign. They will just cite their bullsh!t "polices and community standards", so avoid using them at all costs.

Waste of time. Never managed to run their ruby gem. After a day trying was informed that they dont approve my account. Just starting new trial account for checking their services, managed to send one test email. Company and site for using it very legit, never did any spam, but their rules said no.

mark answered my question quickly and with precision.
after that, he approved my account immediately. great support.

We’ve been using MailerSend for about six months for simple email verification, subscription confirmations, and email marketing.

Today, we woke up to find our account suspended without any proper explanation. After contacting their support team, they abruptly closed the chat and then disabled the live chat feature.

Because of this, we tried opening a new account to understand what was wrong with our activity. Their response was: "Our system simply detected it. The account will be permanently terminated. Also, we can’t determine the reason; that’s just how the system works."

As you can see in the other reviews, other users experienced exactly same problem explained above.

Avoid this service at all costs!

Help came quick, with explaination and friendly - what more could you want?

This company is a Lier,
first they will tell you that you will get 3,000 email for free then after you sign up they will tell you no its actually just 100 email (not per month).
then when you try to send an email to someone they will tell you that you can only send to verified domains, you go to add domains they say you need to upgrade to add more than 2 domains, but wait we have this feature that is called Sender identities with this feature you can "Send emails without having to verify the domain—they'll be signed by one of your existing verified domains." but unfortunately you need to upgrade to use this feature.
so basically they are bunch of liars.
*its ok to charge money for your services just don't lie about the free services that you provide.

I've been a loyal customer of MailerSend for over a year, and I was initially impressed with their service. However, I've recently experienced a significant change in their policies that has left me feeling frustrated and undervalued.

It seems that MailerSend has decided to prioritize profit over customer satisfaction. They have implemented new policies that have forced me to upgrade my plan, even though my current needs were being met. This abrupt change was incredibly inconvenient and disruptive to my small business operations.

As a small business owner, I rely on reliable email services to communicate with clients and manage my operations. The sudden increase in cost, coupled with the lack of flexibility, makes it difficult to justify staying with MailerSend.

I hope that MailerSend will reconsider their recent policy changes and prioritize the needs of their long-term customers.

To use this SMTP provider, you must first go through an approval process. This involves submitting screenshots of activities from your previous SMTP provider or three billing invoices, along with a detailed paragraph about your business and how you plan to use their service. I complied with all these requests, spending over an hour of my time.

The result? I was not approved. The reason given was some vague issue with their terms of service.

My advice: Avoid signing up. They gather extensive information about your previous SMTP provider, only to reject your application. This feels more like a data collection operation than a legitimate SMTP service.

Based on my research MailerSend looked liked a great platform for our clients SMTP services. Unfortunately, when I attempted to subscribe to a paid subscription they instantly suspended our account due to content not being in accordance with their Terms of Service.

We had never sent a single email with MailerSend and after contacting support they were unwilling to share why our account was suspended. Unsure how our content caused our account to become suspended when we had set up no domains or sent any emails.

I thought this was a good service for developers since they claim that you can send 3k emails a month under their free tier. If that went well I would have upgraded my package. The setup was easy and I configured everything correctly since I could use the SMTP service to email my own domain. But to email any other domain you need to get your account approved. This has been a nightmare. They send vague emails saying "We cannot connect to your domain and there needs to be content on it." My site is up and running and tested on various networks and devices. I know the site is up. When I messaged their support and told them that, they switched up the denial and said my account is not in compliance with their TOS. But never tell me specifically what to do to get in compliance. I am ready to just switch over to SendPulse. Their support is vague and it doesnt seem like they want any new customers.

The worst! Won't open account. Awful setup process.

My old plan was changed to hobby plan in Aug 2024 without notice. Down from 12,000 to 3,000 emails. I won't pay for over usage.

Edit: They have confirmed it's announced. But still this kind of plan change is horrible

So we've been using MailerSend and MailerLite for a few years. MailerLite has been issues all the time. But MailerSend was fine up to a few weeks ago. They just suspended our account for having 20 bounced emails on a total sending emails of over 6k. The 20 bounced emails were just because those were 20 emails on a web server that was down for a few hours. They suspended our account without giving any notice. After a few weeks, we found out that none of our emails that included invoices to be paid went out which resulted in thousands and thousands of euros in loss. They just DON'T CARE. To reactivate they provided us with a list of technical changes we have to implement before they wanna reactivate our service again, recaptcha (which we already have impleted), email validation APIs, and honeypot fields, ... We just switched to Amazon SES, way cheaper, way more reliable, so do yourself a favor and stay and stay far away from these people.

We had been using Mailersend for over a year and then all of a sudden they decided to "put our account on hold" because one day our spam rate hit 0.4%. We made a small mistake in our marketing emails outreach that caused a very tiny small in our spam rate, which is normally well below the 0.1% average. The problem was that with Mailersend pausing our account, they also stopped sending all our transactional emails, not just marketing emails (they don't separate those like other services do). This caused a lot of issues within our organization and had to be solved immediately. So I asked Mark A. at their customer support to re-enable our account and we'd only send our 0% spam transactional emails for now at least. But Mark A. behaved incredible rude and did not want to solve the issue unless we would implement a list of technical fixes first (double opt-ins, reCAPTCHA's, hidden “honeypot” fields ...). Long story short: Do not trust this service with your transactional emails because one day they will just stop sending them if you make a tiny mistake in your marketing email outreach.

Fantastic support from Cesar and Glenn. Troubleshooting required a lot of interaction with them. But they were able to pinpoint exactly where the issue was and the problem was solved. Great to have such level of support and expertise from our provider.

Great experience working with Mailersend. Customer service is fantastic and prompt. Cesar helped me out quickly and knew exactly what to do.

They have good support, work even in Friday evening 👍