“SMTP.com suits businesses that send 100,000 or more emails a month and want a dedicated IP and people to call. Small senders pay more per email, and cancelling needs 30 days’ notice by phone with no refunds.”
Research-based review · not hands-on tested Built from the vendor’s documentation and pricing pages and from patterns in customer reviews. How we work.
Overall: (6.0 + 7.5 + 7.0 + 7.0 + 6.5) ÷ 5 = 6.80, shown as 6.8. The five criteria are weighted equally.
Scores are editorial judgments in half-point steps, based on documented features, published pricing and repeated themes in customer reviews. They are not lab measurements, so treat the words as the guide: 8.0+ Strong, 7.0 to 7.9 Good, 6.0 to 6.9 Average, below 6.0 Weak.
If any of these matter to your decision, check them directly with the vendor or during your trial.
Businesses sending under about 10,000 emails a month, teams that need a campaign editor or automation, developers who expect official SDKs, and anyone who wants to cancel online without notice.
By Abdullahi Abdirahman, Founder & Editor, SoftReviewLab. Prices, plan details and terms checked on SMTP.com’s own pages on October 8, 2026. This review is research-based: I have not sent email through an SMTP.com account myself.
Disclosure: SoftReviewLab is an SMTP.com affiliate partner. This page contains affiliate links, and if you sign up through them, SoftReviewLab may earn a commission at no extra cost to you. See our affiliate disclosure and research and scoring method.
This SMTP.com review scores the service 6.8 out of 10. SMTP.com is an email delivery service, not an email marketing tool: it sends the receipts, password resets, alerts and bulk messages your website, store or app creates, through SMTP relay or a REST API. Its strengths are a dedicated IP from the $80 Starter plan, phone, chat and email support, and a low price per email at high volume. Its weaknesses are no free plan, terms that require 30 days’ notice by phone to cancel and give no refunds, and a small list of official integrations and no official SDKs. It suits a business that sends 100,000 or more emails a month and wants its own IP and people to call.
| Item | Details |
|---|---|
| Overall score | 6.8 out of 10 (research-based) |
| What it is | Email delivery service: SMTP relay and REST API |
| Starting price | $25 a month for 50,000 emails on a shared IP |
| Dedicated IP | From the $80 Starter plan (100,000 emails) |
| Free plan | None |
| Support | Phone, chat and email |
| Cancellation | 30 days’ notice by phone; fees are non-refundable |
If that fits your volume and you want to compare plans, you can see SMTP.com’s current plans here. Read the cancellation terms before you pay, because they are stricter than most.
Every business sends two kinds of email. Marketing email goes out in campaigns from tools like Campaigner or Mailchimp. Transactional and system email is triggered by your own software: order confirmations, invoices, login codes and shipping updates. SMTP.com delivers the second kind, and many businesses send it from a separate subdomain so a spike in complaints about a promotion never delays a customer’s receipt. SMTP.com is part of Ziff Davis, the group that also owns Campaigner, and says it has more than 22 years of email delivery behind it. It works like this:
If your website emails are already landing in spam, my guide on why website emails go to spam covers the free fixes to try before you pay for anything.
I score every tool on the same five criteria, weighted equally: ease of setup and use, features, pricing and value, integrations, and support and terms. The overall score is the plain average. Prices, plan details and terms come from SMTP.com’s pricing page, terms and conditions and product pages, checked on October 8, 2026.
| Criterion | Score | Why |
|---|---|---|
| Ease of setup and use | 6.0 | Standard domain setup, but customers describe the dashboard as dated, and the API has no official SDKs |
| Features | 7.5 | SMTP relay and REST API on every plan, a dedicated IP from $80, and Reputation Defender, validation and Insight Engine as add-ons |
| Pricing and value | 7.0 | Falls to $0.50 per 1,000 emails at volume, but no free plan and the $80 Starter plan costs the most per email |
| Integrations | 7.0 | WordPress, Shopify and a dozen app connections, and SMTP relay works with almost any system |
| Support and terms | 6.5 | Phone, chat and email support, but cancelling needs 30 days’ notice by phone and fees are non-refundable |
SMTP.com prices by the number of emails you send each month. Every plan includes SMTP relay, the API, support and reporting. The main difference between plans, apart from volume, is whether you share an IP with other senders.
| Plan | Monthly price | Emails a month | IP address | Cost per 1,000 emails |
|---|---|---|---|---|
| Essential | $25 | 50,000 | Shared | $0.50 |
| Starter | $80 | 100,000 | Dedicated | $0.80 |
| Growth | $300 | 500,000 | Dedicated | $0.60 |
| Business | $500 | 1,000,000 | Dedicated | $0.50 |
| High Volume | Custom quote | 250 million or more | Dedicated instance | Negotiated |
The per-email figures show the real trade-off. Starter is the most expensive plan per message because you are paying for a dedicated IP, and Business brings the cost back down to $0.50 per 1,000. If you go over your allowance, SMTP.com’s terms say usage fees are charged automatically for each extra email, but the rate is not on the pricing page, so ask before you choose a plan close to your real volume. SMTP.com accepts cards and PayPal.
| Add-on | What it does | Cost |
|---|---|---|
| Reputation Defender | Scans your sending lists and suppresses bad addresses in real time, before they bounce | 20 percent of your plan price |
| Insight Engine | Adds data about your contacts to their profiles | 20 percent of your plan price |
| Email list validation | Checks a list for bad addresses before you send | Not on the public pages |
| Managed services | Inbox placement consulting, account management, migration and template design | Quote from sales |
A worked example: a business on Growth pays $300 a month, and adding Reputation Defender takes that to $360, or $4,320 a year. That is the number to compare with alternatives, not the headline plan price.
SMTP.com has no free plan, so testing it properly means paying for at least one month. Read its terms and conditions before you do. They say month-to-month customers can upgrade, downgrade or cancel at any time with 30 days’ notice, by calling the number on SMTP.com’s contact page, and that subscription fees are paid in advance and are non-refundable. In practice, if you decide to leave, call well before your next billing date and ask for written confirmation.
SMTP relay works with almost any software that sends email, including WordPress, CRMs and help desks, by changing the server settings. The REST API, version 4, takes and returns JSON and accepts your API key in several ways, including a bearer token. Its API documentation does not list official SDK libraries, so developers work with the API directly or with general-purpose libraries, which adds some friction compared with services that ship their own SDKs.
A dedicated IP is included from the $80 Starter plan, earlier than many rivals that charge extra for one. A dedicated IP helps when you send steady, significant volume, because your reputation depends only on your own mail. At low or irregular volume a well-managed shared IP often does better, which is why the Essential plan is the sensible start under about 50,000 emails a month. Senders of 250 million emails or more a month can get a dedicated instance of the platform with its own mail queue.
Reputation Defender suppresses bad addresses from your sends in real time, which tackles the most common cause of poor delivery: mailing addresses that bounce. SMTP.com also offers list validation to clean a list before you send. Both are paid extras rather than part of the base plan.
Every plan includes detailed reporting, and the API supports callbacks and webhooks for delivery events. Insight Engine is a newer add-on that enriches your contact profiles with extra data. I could not judge its quality without an account, so treat it as optional until you have tested it.
SMTP.com has no drag-and-drop campaign editor, no landing pages and no marketing automation builder. If you need those, pair it with a marketing platform. My Campaigner review covers a sister product that handles campaigns.
SMTP.com’s integrations page lists WordPress, including the Post SMTP and Gravity SMTP plugins, Shopify, Google Sheets, Google Forms, Google Docs, Google Calendar, Gmail, Slack, Trello, Airtable, Wufoo and Google lead form extensions. Because SMTP relay works with nearly any system that sends email, most businesses can connect their CRM, store or help desk without a dedicated integration.
No sending service can guarantee the inbox. SMTP.com’s deliverability page describes IP reputation management, Reputation Defender and list validation, and its managed services add inbox placement consulting and ISP relations for customers who pay for them. Since 2024, Gmail, Yahoo and Microsoft have required bulk senders to authenticate with SPF, DKIM and DMARC and to keep spam complaints low, whatever service they use, and marketing mail also needs a one-click unsubscribe. My email deliverability guide explains each rule step by step.
SMTP.com offers support by phone, chat and email. Its contact page lists support hours of Monday to Friday, 3 a.m. to 9 p.m. Eastern, while some of its product pages describe 24/7 support, so check the hours that apply to you if out-of-hours help matters. It says its service is compliant with GDPR, CASL and CCPA, and that its infrastructure is monitored around the clock.
In the customer reviews I read in September 2026, satisfied customers praised reliable delivery for website and app email, clear API documentation and quick help by phone and chat. The recurring complaints were automatic renewals, the notice needed to cancel and a dated interface, and a few customers reported mail landing in spam at low volume, which usually traces back to domain setup or list quality.
| Service | Entry plan | Cost per 1,000 at entry | Free option |
|---|---|---|---|
| SMTP.com Essential | $25 a month for 50,000 emails | $0.50 | None |
| Postmark Basic | $15 a month for 10,000 emails | $1.50 | 100 test emails a month |
| Mailgun Basic | $15 a month for 10,000 emails | $1.50 | 100 emails a day |
| Amazon SES Essentials | Pay as you go | $0.16 | Pay only for what you send |
SMTP.com costs more to start than the $15 developer plans but less per email once you send more than about 17,000 a month. Amazon SES is far cheaper per message but expects you to manage reputation and support yourself. SMTP.com sits in between: you pay more than raw infrastructure for a dedicated IP sooner and people you can call. If marketing campaigns are your main need rather than transactional email, my guide on how to choose email marketing software is the better starting point.
SMTP.com scores 6.8 out of 10. It is a dependable, managed delivery service that gives you a dedicated IP sooner than many rivals and real people to call, and its price per email is competitive at volume. It is not for everyone: small senders pay more per email, developers may miss official SDKs, and the cancellation terms deserve a careful read. If your volume matches the profile above, you can compare SMTP.com’s current plans and start with the one that matches your real monthly volume.
SMTP.com costs $25 a month for 50,000 emails on a shared IP, $80 for 100,000 with a dedicated IP, $300 for 500,000 and $500 for 1,000,000. Senders of 250 million emails a month or more get a custom quote.
No. SMTP.com has no free plan, so the cheapest way to test it is one month on the $25 Essential plan. Postmark and Mailgun offer small free allowances for testing an integration.
It can be. The $80 Starter plan covers 100,000 emails and includes a dedicated IP, which helps if steady volume and your own sending reputation matter to you. If you don’t need a dedicated IP or phone support, Amazon SES costs far less per email, but you manage everything yourself.
Business costs $200 more than Growth for twice the emails, which brings the price down from $0.60 to $0.50 per 1,000. If you regularly send well over 500,000 a month, Business is usually the better buy, because Growth charges usage fees for every email above its allowance.
Yes. SMTP.com says it helps hundreds of customers a month migrate from providers like SendGrid and Mailgun, and offers managed migration and onboarding. Move one email stream at a time and keep your old provider running until the new one is proven.
Under SMTP.com’s terms, month-to-month customers can cancel at any time with 30 days’ notice by calling the number on its contact page. Fees already paid are not refunded, so call before your next billing date and keep written confirmation.
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