Best free emailing software: what the zero-cost plans don't tell you

In brief: Free emailing software is fine for trying out a tool or sending a small newsletter. For a B2B business, the real cost lies elsewhere: daily sending caps, the provider’s logo in every message, a ban on prospecting and a sending reputation shared with strangers.

Search for “free emailing software” and you land on rankings that all look alike. Sixteen tools, sometimes twenty-four, Brevo at the top, one quota per row and the same verdict: “try before you buy”. The advice isn’t wrong. It just stops halfway.

A free plan is not a lighter version of the product. It is a product in its own right, built to move you up to a paid tier, and its limits are set with that in mind. Some of them show on the pricing page, others only in the terms of use, and a few on the day your messages end up in a client’s spam folder.

What a free emailing plan is really for

Three uses fully justify a €0 plan. The first is evaluating a platform with your own contacts before you sign anything. The second is a small newsletter for an association, a club or a freelancer: a few hundred subscribers, one send a month. The third is learning: building a first campaign, understanding what an open rate and a click rate actually measure.

In all three cases, free does the job very well. The trouble starts when the tool becomes a company’s channel for prospecting or customer retention. Volumes rise, every message carries the brand’s image, and the rules of the game change.

That shift, which usually happens gradually, is what comparison articles leave out. You open a free account for a newsletter, then upload the contact list from your last trade show. And one morning, the account is suspended.

Free plans compared in 2026

Here is what the main providers state on their official pricing pages, checked on 28 October 2026. These terms change often, so check them again on the day you open your account.

On paper, the gap is huge. Sender offers thirty times Mailchimp’s volume. But the column that matters most isn’t the volume one. It’s the one that’s missing: what you are allowed to send, and to whom.

What the quotas don’t say

The daily cap chops up your campaigns

A generous monthly quota can hide a tight daily cap. At 200 emails a day, a campaign to 1,500 contacts stretches over eight days. Your follow-up goes out before the first message has even reached everyone, and analysing the results no longer makes much sense.

For a newsletter, that’s no disaster. For a webinar invitation or a time-limited offer, it’s a deal-breaker.

The provider’s logo signs your messages

On most free plans, every email carries a line such as “Sent with Brevo” or a provider badge in the footer. Brevo even charges for removing that logo as an add-on. In B2C, few people notice. In front of a professional buyer reading your proposal, it’s another matter: in small print, the message says you haven’t invested in your own communication.

Automation you can count on one hand

Mailchimp and Mailjet offer no automated workflows on their free plans. MailerLite allows three active ones, with five steps each. HubSpot, a single action. In other words, a welcome sequence or an automatic follow-up to non-openers costs money almost everywhere.

Support often stops at a help centre

At Mailchimp, email support ends after the first thirty days. MailerLite and HubSpot point you to their knowledge base and their community. As long as everything works, nobody complains. The day an import fails on the eve of a send, you find out what a real person on the other end is worth.

B2B prospecting, the big gap in free plans

This is the point no mainstream comparison covers, and the one that causes B2B companies the most trouble.

French law allows email prospecting between businesses without prior consent, provided the message relates to the recipient’s job, the recipient has been told how their address will be used and can easily object. The CNIL, the French data protection authority, sets this out on its page about commercial prospecting by email.

But what the law allows, a piece of software can forbid. Mailchimp’s terms of use are crystal clear: no purchased, rented or third-party address lists. The big self-service platforms take similar positions, and a free account opened in two minutes has no track record to fall back on when a filter is triggered. Uploading a prospecting list to these tools exposes you to a suspension, sometimes in the middle of a campaign.

If prospecting is part of your business, then, the question isn’t “which free plan gives me the most emails?” but “which one accepts my business contact lists?”. The list shrinks very quickly.

Deliverability: on a shared IP, you inherit the neighbours

Barring rare exceptions, a free account sends from IP addresses shared with the platform’s other customers. That isn’t a flaw in itself: a well-monitored shared IP delivers properly. The risk comes from who else is on it.

On a self-service free plan, anyone can open an account and send the same day. Providers filter, suspend and clean up, but they often step in after the fact. In the meantime, the IP’s reputation has absorbed the complaints, and your messages, flawless as they are, pay part of the price.

Since February 2024, Google has required senders of more than 5,000 messages a day to Gmail to use SPF, DKIM and DMARC authentication, offer one-click unsubscribe and keep their complaint rate below 0.3%. What gets mentioned less often: every sender, whatever their volume, must already pass at least SPF or DKIM. Yahoo applies the same minimum requirement, and Microsoft announced comparable rules for Outlook in 2025. A small free-plan sender stays well below the 5,000 threshold, but filters reason the same way far below it. So check that the free plan lets you authenticate your own domain name. Without that, your emails go out under the provider’s domain and you build no reputation in your own name.

Your contacts: where they live and how to get them back

A B2B contact database is an asset. Before entrusting one to a free tool, two questions deserve a written answer.

First, where is the data hosted? Several major providers are American. The EU-US Data Privacy Framework, adopted by the European Commission in July 2023, allows these transfers to certified companies, but you remain responsible for your choice of processor under the GDPR. A platform that hosts in France spares you that analysis.

Second, can you leave with everything? Exporting contacts is almost always possible. Send history, unsubscribes and engagement scores much less so. Yet your suppression list has to follow you from one tool to the next: lose it, and you risk writing to people who asked to be left alone.

Which free plan for which use

There is no best free emailing software in absolute terms. There is the one that fits what you plan to do with it.

That last case is the one we designed Ediware’s free emailing account for: 1,000 emails a month with no daily cap, the editor and the templates, uploads of your prospecting lists, and support by email in French. Every account is checked by our team before activation, which keeps the shared infrastructure clean. The trade-off is activation within 24 working hours rather than two minutes. For the other selection criteria, the guide to emailing software goes through each feature in detail.

When free costs more than paid

A free plan stops being economical well before you hit its quota. A few signs never lie.

• You split your campaigns over several days to stay under the daily cap.
• You juggle two free accounts to add up the quotas, with two databases to keep up to date and two suppression lists.
• A client has pointed out the provider’s logo at the bottom of your sales proposal.
• You don’t dare upload your prospecting list for fear of a suspension.
• Your open rate is falling even though you haven’t changed anything.

At that point, weigh the price of a subscription against the time lost and the opportunities missed. Above all, look at the pricing model: a subscription billed by number of contacts goes up with every import, and credits that expire make you pay for emails you never sent. Our Ediware professional plans come with no commitment, and unused credits roll over from one month to the next.

Free remains an excellent way in. You just need to know where the exit is.