Choosing the best email marketing tool depends less on a universal ranking than on the size of the contact list, the available budget and the level of automation needed. The market covers very different solutions, from simple sending tools to platforms that integrate full customer relationship management. This guide details the selection criteria and the main families of tools available.
What is an email marketing tool
An email marketing tool is software or an online service that designs, sends and tracks email campaigns to a contact list. It replaces manual sending from a standard mailbox, limited in volume and lacking reliable tracking, with a system able to handle thousands of sends while respecting unsubscribe and consent rules.
Most current tools go beyond simple message sending. They include a template editor, contact segmentation based on behavior, automation scenarios triggered by a specific action, and detailed reports on opens, clicks and unsubscribes. This functional coverage varies widely from one tool to another, which explains the price gap between entry-level offers and the most complete platforms.
Criteria for choosing the best email marketing tool
There is no single best email marketing tool in absolute terms: the choice depends on contact volume, budget and the level of automation sought. A small mailing list is well served by a simple, low-cost tool, while a business automating its sales cycle needs a platform integrated with its CRM.
A few concrete criteria help narrow the search:
- Contact volume and sending frequency: most tools charge by tier of active contacts, a criterion that directly affects real cost beyond a certain threshold.
- Automation and segmentation: the ability to trigger a send based on a contact action (signup, purchase, inactivity) rather than only broadcasting one-off campaigns.
- Integration with the CRM: an email tool connected to the sales contact database avoids double entry and allows precise segment targeting.
- Deliverability: the sending reputation of the tool directly influences the share of emails that reach the inbox rather than the spam folder.
- GDPR compliance: clear consent management, a systematic unsubscribe link and limited retention of contact data.
- Hosting mode: a SaaS solution managed by the vendor, or a self-hosted open source solution that requires its own infrastructure.
Comparing the types of email marketing tools
The table below distinguishes the main families of tools by positioning, with no order of preference between them.
| Tool type | How it works | Strength | Ideal for |
|---|---|---|---|
| SaaS integrated with a CRM | Emailing and sales contact management on the same platform | Unified contact view, scenarios triggered by a sales action | Businesses automating their customer relationship |
| Specialized emailing SaaS | Sending, templates and statistics, without a full sales module | Fast onboarding, dedicated campaign editor | Marketing teams sending regular newsletters |
| Self-hosted open source | Software installed on a dedicated server | Control over data and no recurring subscription | Organizations with in-house technical skills |
This table does not cover the entire market: it gives a basis to narrow the search to two or three tools to test under real conditions before committing.
Email marketing tools integrated with a CRM
Brevo, HubSpot and ActiveCampaign illustrate the family of tools that combine emailing and customer relationship management on the same platform. Brevo offers an emailing module available from its free plan, with contact segmentation and simple automation scenarios, which makes it a popular option for small organizations getting started with a CRM software.
HubSpot goes further on the integration between marketing and sales teams, tracking the contact’s journey from the first interaction through to conversion. ActiveCampaign stands out for the richness of its automation scenarios, able to combine several conditions and channels for complex campaigns. These three tools suit a business looking to unify its sales contact database with its email communication.
Specialized and free email marketing tools
Mailchimp, MailerLite and Sarbacane represent the family of tools specialized in emailing, without a full CRM module attached. Mailchimp offers an accessible campaign editor, with a free tier limited in contact count, ideal for a marketing team starting out with no historical data to migrate.
MailerLite focuses on a simple interface and a good features-to-price ratio, which makes it relevant for a small business sending regular newsletters without complex automation scenarios. Sarbacane, a French solution, emphasizes GDPR compliance and support in French, an advantage for an organization that prioritizes hosting and support based in Europe.
How to measure the effectiveness of an email campaign
Tracking an email campaign relies on a few key indicators: open rate, click rate, unsubscribe rate and spam complaint rate. This data, provided directly by the email marketing tool, allows comparison between several campaigns and helps spot a decline in deliverability before it takes hold.
A business that already centralizes its marketing indicators in a marketing dashboard benefits from feeding these email metrics into it, alongside other acquisition channels. This cross-channel view often reveals that a campaign performing well on open rate generates few conversions, a signal that points to reworking the message content rather than deliverability alone.
How to choose the right email marketing tool for your business
Choosing the best email marketing tool depends first on the commercial maturity of the business rather than a general preference for one vendor or another. An organization starting out with a small contact list will benefit from a simple tool with a sufficient free tier, rather than a complete platform whose features would mostly go unused.
A business already equipped with a CRM will get more value from an integrated email tool, which avoids double contact entry and allows targeting a precise segment based on sales history. The overall marketing budget also matters: a team already monitoring its spend, for example with tools to save on Google Ads, will apply the same logic to emailing by starting with a free or entry-level tier before investing in a more complete offer.
A last criterion not to overlook is the GDPR compliance of the chosen tool. Clear consent and unsubscribe management protects the business from a spam complaint, which durably damages sending reputation and therefore the deliverability of all future campaigns.
Frequently asked questions
What exactly is an email marketing tool?
An email marketing tool is software or an online service that designs, sends and tracks email campaigns to a contact list. It handles message formatting, bulk sending without relying on a standard mailbox, unsubscribe management and tracking of opens and clicks. Some tools focus purely on sending, while others combine contact management and automation within a single platform.
Which criteria help choose the best email marketing tool for a given business?
The volume of active contacts and sending frequency largely determine the real cost of a tool, since most plans are priced by contact tier. The need for automation, fine segmentation or integration with an existing CRM then points toward a more or less complete solution. GDPR compliance, with clear consent management and an unsubscribe option, remains a cross-cutting criterion regardless of the tool chosen.
Is there a free email marketing tool good enough to get started?
Several tools offer a free tier, limited in contact count or monthly sends, which covers the needs of a small mailing list. This free tier works well to test a solution or start an activity, before a growing contact volume justifies moving to a paid plan with more automation features.
How can a business run an effective email marketing campaign?
An effective email marketing campaign starts with a qualified contact list that gave explicit consent, rather than a large sending volume. The subject line and send time directly influence the open rate, while the relevance of the content to the targeted segment drives the click rate. Regular monitoring of deliverability indicators helps correct a drop in performance before it becomes a lasting problem.
Does an open source email marketing tool suit every business?
A self-hosted open source tool requires server infrastructure and internal technical maintenance, which suits a team with technical resources. A business without dedicated technical skills generally gets more value from a SaaS tool, where hosting, updates and deliverability are handled by the vendor.