Email marketing software, priced at the size of your list
Inboxwright compares email marketing platforms for small and B2B businesses by the number that decides the bill — what each one charges at your list size — with every price dated and every source named.
Three ways in
The ranking
Seven platforms scored on a published rubric, with what each one counts to set your bill.
Best email marketing software →The price table
Every entry plan at 5,000, 25,000 and 100,000 contacts, monthly beside annual.
Costs by list size →The sending rules
How bulk services price, and what Gmail and CAN-SPAM ask of every large send.
Bulk email services →The current order
How the scores are set →What this site does
Inboxwright answers one question for businesses that send email to customers and leads: which email marketing platform should I pay for, and what will it cost when my list grows? We read each vendor's pricing page, move its price slider to the list sizes that matter, and write down what it says — with the date.
Our ranking of the best email marketing software scores seven platforms on a published rubric. The price table at 5k, 25k and 100k contacts shows the monthly and annual bill on each. And our guide to bulk email services covers the rules every large send must meet, whichever platform you choose.
What we will not do
We do not print open rates, inbox-placement scores or "we tested 40 tools" claims, because we have not run those tests and the vendors' own figures cannot be checked. We do not run coupon boxes. And we say plainly when the right answer is a free plan or a tool that pays us nothing — Google's Postmaster Tools, for example, or Brevo, whose affiliate programme does not accept new sites.
How to use it
Start with two numbers: how many people are on your list, and how many emails you send them a month. The first sets the price on most platforms; the second sets it on Brevo and decides whether a plan's send cap will bite. With those in hand, the ranking and the price table will point you to two or three platforms worth a trial.
If you are just starting out, the guide to email marketing for small business goes through the setup in order, and the free email marketing software comparison shows how far a free plan will take you.
Recent guides and reviews
All ten →
B2B Email Marketing Software: Seats, Scoring and the Law
Selling to businesses changes what matters in an email platform: how many colleagues can log in, whether contacts can be scored, how it connects to your CRM — and the fact that B2B email has no legal exemption.
AI Email Marketing Tools: What the Platforms Actually Include
Almost every email platform now lists AI features. Here is what each one's pricing page actually offers — writing, subject lines, images, send times, segments — and what none of them can promise.
ESP vs SMTP Relay: Which One Sends Your Business Email?
Email marketing platforms and SMTP relays both send email in bulk, but they do different jobs — and the law treats their messages differently. How to tell which one you need, and when you need both.
Benchmark Email Review (2026): Simple, Priced Plainly, Thin on Automation
Benchmark Email is easy to understand — one free plan, one paid plan, every feature in both — but its current pages list no automation workflows. Here is who that suits.
Sender Review (2026): A Big Free Plan and a First-Year Discount
Sender has the largest free plan we found and low paid prices — but its annual discount covers only the first year. Here is the full bill, year one and year two.
Brevo Review (2026): Paying by the Email, Not the Contact
Brevo sizes its plans by how many emails you send, not how many contacts you keep. That makes it the cheapest option for some lists and a poor one for others — here is how to tell which you are.