Sender gives away the most sending in this category, and exactly one seat to send from

Sender scores 77, the highest free plan score in this category, while sitting at rank 2 behind Brevo. That inversion is deliberate and it is recorded as such: our own category FAQ already answers "which free plan is the most generous" with Sender, so the score agrees with copy we wrote before we started scoring. Rank weighs the whole package, where Brevo's uncapped contact storage and CRM matter. The score asks only how far zero dollars goes, and 15,000 monthly emails goes further than 300 a day.

Generosity at 88 and feature depth at 85 are both the top marks in this file. What keeps the total out of the Outstanding band is the pair of 62s underneath, one for freedom and one for what free users report, and neither of those is a complaint about the caps. The pillars below say what each one is measuring.

Two ceilings apply and they bite in different orders depending on how often you write (as of July 2026):

• 2,500 subscribers. For most people this is the one that ends the free ride, because 15,000 emails across a full list is six sends each and few newsletters run that often.
• 15,000 emails a month. A daily email flips the order: 2,500 people times 30 days is 75,000 sends, so you would clear the allowance around the tenth of the month.
• One user seat. Nobody else on your team can log in at all. Standard raises it to three and Professional to ten, so the moment a second person needs access, free is over regardless of list size.
• Sender branding stays on every email until you pay.
• No A/B testing, no transactional sending and no paid subscriptions at the free tier.

There is one thing missing here that we usually complain about and cannot: nothing switches off inside the caps. Free Forever behaves like a plan rather than a countdown, with no trial clock and no support cliff after two weeks.

Standard starts at around $7 a month and buys three things: your branding back, SMS, unlimited templates and three seats instead of one. Against a free plan this large, that is a narrow upgrade, which is a compliment to the free tier rather than a criticism of the paid one. Professional sits above it with advanced automation, deeper reporting, ten seats and the option of a dedicated IP.

The awkward part is finding out what you will actually pay. Sender quotes prices per subscriber tier, so the pricing page does not show a flat number until you enter your list size. That around $7 figure is an entry rate at the smallest band and it climbs with your list, which makes budgeting harder than it should be for a tool whose main pitch is that it is cheap. We are quoting the entry rate we hold and nothing above it, because we have not verified the higher bands first-party.

Most people who upgrade here do it for one of two reasons, and neither is sending volume. Either they crossed 2,500 subscribers, or somebody else needed a login.

Yes, within limits, and the limits are unusually far away. Everything a small newsletter or shop needs to run properly, including automated welcome sequences, is on the free plan and stays there, which is not true of most tools in this category.

Concretely: a creator with 1,800 subscribers on a weekly issue never pays. A small shop running a signup popup, a landing page and a three-email welcome flow never pays. A solo consultant emailing 400 clients monthly never gets close to either ceiling.

Who cannot live here: any team, because free is one seat and there is no second seat at any price below Standard. Anyone sending daily, because the send pool empties around the middle of the month. Anyone who needs transactional email from the same tool, which Sender does not do at all. And anyone whose emails cannot carry vendor branding.

If a second login is the blocker rather than the numbers, Brevo's free plan is the other end of the trade, uncapped on contacts and capped by the day. Free Sender alternatives covers the rest, and the best free email marketing tools ranks the category.