Growth
Email marketing tools: how to choose the right platform
Mailchimp, HubSpot, Brevo, ActiveCampaign, Kit and more compared by job, plus deliverability basics and how to connect email to your CRM.

In this article
Email remains one of the most reliable channels for nurturing leads and keeping customers, because you own the list and reach people directly. The platform you choose matters less than how you use it, but a poor fit with your CRM or your team’s skills will hold you back.
What should an email platform do?
- Lists and segments based on behaviour, interests and CRM data.
- Campaigns and automation: welcome series, nurture sequences, re-engagement, transactional messages.
- Forms and landing pages to capture new subscribers with clear consent.
- Integration with your CRM, website and e-commerce platform.
- Deliverability tools: domain authentication, list hygiene, spam testing.
- Consent and compliance: double opt-in, preference centres, unsubscribe handling and records of consent.
- Reporting on clicks, replies, conversions and revenue.
Which platforms suit which needs?
These are well-established options, grouped by the job they do best. Pricing models change often, so compare current plans at your list size.
| Need | Platforms to consider |
|---|---|
| CRM and marketing in one place | HubSpot, ActiveCampaign |
| Email plus SMS and transactional messages | Brevo (formerly Sendinblue), GetResponse |
| Simple newsletters and campaigns | Mailchimp, Constant Contact, Moosend, Benchmark Email |
| Creators and content businesses | Kit (formerly ConvertKit), AWeber |
| E-commerce | Klaviyo, Mailchimp, Omnisend |
Many companies use two tools: a CRM-led platform for sales and nurture, and a dedicated service for high-volume transactional email.
How do you choose?
- Start from your CRM. If you use HubSpot or another CRM with built-in email, check whether it already covers your needs before adding another tool.
- List your must-have automations, such as lead nurture, onboarding and renewal reminders.
- Check integrations with your website forms, CRM and booking tools, and how data flows in both directions.
- Test usability with the people who will build the emails.
- Check data protection: where data is stored, consent features and data processing terms.
What are the deliverability basics?
The best tool can’t help if emails land in spam:
- Authenticate your domain with SPF, DKIM and DMARC. Major mailbox providers now require this for bulk senders.
- Only email people who opted in. Never buy lists.
- Remove inactive and bouncing addresses regularly.
- Make unsubscribing easy, including one-click unsubscribe.
- Send relevant content to the right segments rather than everything to everyone.
- Warm up new domains gradually.
Which emails work best for growing companies?
- Welcome sequences that deliver what people signed up for and introduce what you do.
- Nurture sequences of useful content tied to the buyer’s problem, with a clear next step.
- Event-triggered emails, such as after a download, a demo or an assessment result.
- Customer emails: onboarding, tips, renewals and requests for reviews.
- A regular newsletter with genuinely useful insights, not only company news.
How should you measure email?
Open rates have become unreliable because privacy features pre-load images. Focus on clicks, replies, meetings booked, conversions and revenue from email, plus unsubscribe and spam complaint rates. Connect email data to your CRM so you can see which sequences lead to customers. See marketing analytics.
Where to start
Email works best as part of a joined-up path from first visit to signed deal. Our AI-Era Growth work sets up nurture, follow-up and the hand-over to sales so leads don’t go cold. Tell us where you’re stuck.
Questions
What is an email marketing tool?
Software for building email lists, designing and sending campaigns and automated sequences, managing consent and unsubscribes, and measuring results. Most also include landing pages, forms and integrations with CRMs and e-commerce platforms.
Which email marketing tool is best for B2B companies?
One that connects tightly to your CRM, so sales sees email activity and leads move between marketing and sales cleanly. HubSpot, ActiveCampaign and Brevo are common choices; the right one depends on your CRM, volumes and automation needs.
Why are our emails going to spam?
Usually because the sending domain isn't authenticated (SPF, DKIM and DMARC), the list includes old or purchased addresses, recipients mark messages as spam, or content looks promotional. Fix authentication and list quality first.


