Best SMTP Service Providers?

David Beroff · Apr 20, 2021

I use SMTP email server from hosting but my email used to go to spam box although I configured it correctly to get 10 points on email tester tool hence I would like to find some best SMTP service providers to integrate for my hosting to send email to inbox. I prefer free options but can accept paid ones. I heard about some like Sendinblue. Mailgun. SendGrid. Amazon SES but not sure which one is the best? can anyone recommend me?

coolhandle · Apr 28, 2021

The Simple Mail Transport Protocol (SMTP) is the underlying technology that acts as the bedrock for e-mail delivery. In simple terms it is the language that mail servers use to communicate with each other and to move e-mail messages around the Internet.

An SMTP cloaking service works by placing one or more public-facing SMTP servers in front of your own mail server. The public servers receive all mail destined for your domain, perform any necessary anti-spam and anti-virus checks, and only pass the mail to your own mail server if the message appears to be good.

My best advice is to contact a number of different SMTP cloaking service suppliers to discuss your own specific requirements. Everyone's needs are different, and the potential benefits you could gain by having an SMTP cloaking service will depend on your own individual circumstances.

RoseHosting · Apr 28, 2021

It depends, on many factors why emails are going to spam (after 10 points on the email tester tool ) like the function for sending email is not configured properly or the IP address you are using has a bad reputation. However, if you change your hosting provider feel free to ask them to set up for you some mass mailing service like Mailgun, Sendgrid, etc. to send the emails. If you are planning to have a control panel like WHM/cPanel or DirectAdmin that would be even better.

HostSlick · May 2, 2021

Have used Sendgrid and Mailjet here.

Altough you might get a Dedicated IP with the providers for best delivery rate

michaelsmithh · May 4, 2024

Some of the best SMTP service providers include SMTPget, SendGrid, Amazon SES, iDealSMTP, and Omnisend. They offer reliable delivery, scalability, and advanced features for email marketing and transactional emails. personally, I have used SMTPget and Sendgrid for bulk email marketing. They provide good services at affordable prices.

blitrionic · Jun 4, 2024

I would suggest you give it a shot with Labnify SMTP as I have personally used them even though I still have an account with Mailjet and Sendgrid. Their setup comes with a detailed API documentation. Heads up: this is by far the best especially if most of your recipients are Gmail recipients and your email list is clean.

Another option is to setup a self-hosted SMTP on a CentOS server. But that might be too technical if you don't know exactly what you are doing.

Steve32 · Jul 29, 2024

If your emails are ending up in the spam folder despite having a perfect score on an email tester, you might want to switch to a dedicated SMTP service provider. Here’s a quick rundown of some options:

Sendinblue: They offer a free plan with 300 emails per day, and their platform is quite user-friendly. It’s a solid choice if you want both email sending and marketing features.
Mailgun: Mailgun gives you 5,000 free emails per month for the first 3 months, which is great for getting started. It's known for strong deliverability and is highly flexible for developers.
SendGrid: With SendGrid, you get 100 free emails per day. It’s known for good deliverability and includes useful tools for tracking and analytics.
Amazon SES: This is a very cost-effective option, especially if you’re already using AWS. You get 62,000 emails per month for free if sent from an EC2 instance, and it's praised for its reliability and scalability.

Each of these has its strengths, so it depends on what you need. For instance, if you want a free tier and don’t mind a bit of setup, Amazon SES is great. If you prefer a more straightforward interface with additional features, Sendinblue or SendGrid might be better. Mailgun is excellent for its flexibility and deliverability. Try a few and see which one works best for your needs!

Dopani · Sep 25, 2024

If you’re leaning toward a free option, Sendinblue is pretty solid, offering a generous free tier, and it's also user-friendly. Mailgun and SendGrid are both strong in terms of deliverability, but their free tiers are a bit limited compared to Sendinblue. If you’re okay with paying a bit, Amazon SES is usually one of the cheapest options and has great deliverability, but it can be a little more technical to set up.

I'd say if you're looking for something straightforward with good support, Sendinblue might be your best bet. But if budget and scalability are important, Amazon SES is also a top contender.

servernext-apon · Dec 16, 2024

Hello @David Beroff

If you're looking for a reliable and cost-effective SMTP service to ensure your emails reach the inbox, I recommend checking out SMTPHosting.com. They specialize in providing SMTP services tailored for website email needs, offering excellent deliverability and robust configurations to prevent emails from going to spam.

While free options like Sendinblue or Amazon SES can be appealing, they often come with limitations or require technical expertise to optimize deliverability. SMTPHosting.com offers affordable plans with easy integration, ensuring a hassle-free experience and consistent performance. SmtpHosting also have reseller options with discounted tier.

Give them a try; they might be the solution you're looking for!

devidrichhnnh · Dec 23, 2024

As a business, we’ve found iDealSMTP to be the most reliable SMTP service provider. Others like SendGrid and Mailgun also offer great solutions, but iDealSMTP stands out for its performance.

Lavis01 · Dec 23, 2024

I’ve had a great experience using SMTPmart for email delivery. Their service is reliable, easy to set up and offers excellent deliverability rates.

Ticaga · Apr 9, 2025

I use MailerSend and haven't any problems on their free plan.

satner · Sep 22, 2025

I'm currently using SMTPmart SMTP server and it's been working well for me. Deliverability has been reliable and their support team is quick to respond whenever I need help.

DaRecordon · 2025-09-29T15:51:34+0100

Getting a 10/10 on email testing tools is great, but it doesn't guarantee inbox delivery because major email providers like Gmail and Outlook also look at your sender reputation, which takes time to build. Even with perfect technical setup, if you're sending from a new domain or IP address, emails can still land in spam until you establish trust with the inbox providers. That's exactly why third-party SMTP services are so popular - they already have established reputations and relationships with major email providers.

From your list, I'd recommend starting with SendGrid's free tier which gives you 100 emails per day forever, or Mailgun which offers 5,000 emails free for the first three months. Both are reliable and widely used. Amazon SES is incredibly cheap if you go beyond free tiers, but the setup is more technical and you need to be careful about warming up your sending reputation properly. Sendinblue (now called Brevo) is also solid with 300 emails per day free, and their interface is more beginner-friendly. Honestly though, the "best" one depends on your volume and technical comfort level. If you're just sending transactional emails like order confirmations or password resets, any of these will work fine. The key is to start slow, don't blast thousands of emails immediately even if your plan allows it, and make sure your content isn't too sales-heavy since that triggers spam filters regardless of which service you use.

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