Choosing an email marketing tool for an accounting firm is primarily a question of list size, budget, and how much automation you need. Most small accounting practices need a tool that handles a few hundred to a few thousand subscribers, sends monthly newsletters reliably, and offers basic segmentation. The enterprise-grade tools are overkill; the simplest free tools are usually sufficient for the first few years.
This comparison covers the tools most used by UK accounting practices, with honest assessments of where each fits.
Mailchimp
The most widely used email marketing tool globally. Mailchimp's free tier covers up to 500 contacts and 1,000 sends per month, which is sufficient for a small practice in its first year of email marketing.
Strengths: familiar interface, large template library, good deliverability, integrates with most website platforms and CRMs.
Weaknesses: the free tier has meaningful feature caps; pricing increases sharply as list size grows; customer support on free plans is limited to knowledge base articles.
Best for: practices starting out with email marketing and wanting a well-known tool with no upfront cost.
Pricing: free up to 500 contacts; paid from approximately £11 per month for 500 contacts (verify current pricing at mailchimp.com).
Kit (formerly ConvertKit)
Purpose-built for creators and small professional service providers. Kit's free tier covers up to 10,000 subscribers with unlimited emails, which is unusually generous and makes it the default recommendation for any growing list.
Strengths: generous free tier, clean and simple workflow, good automation builder, strong for sequence-based email (welcome sequences, nurture series).
Weaknesses: less template variety than Mailchimp; the drag-and-drop email builder is more limited than some competitors.
Best for: practices building an email list from scratch who want automation capabilities without the cost; freelancer and SME-focused practices with a newsletter-and-sequence strategy.
Pricing: free up to 10,000 subscribers; paid plans from approximately £25 per month for creator features (verify current pricing at kit.com).
ActiveCampaign
A full CRM and email automation platform that goes significantly beyond basic newsletter sending. ActiveCampaign handles complex automation sequences, lead scoring, CRM pipelines, and deep segmentation.
Strengths: the most powerful automation available at this price point; CRM integration removes the need for a separate sales tool; excellent deliverability; strong segmentation.
Weaknesses: significantly more complex to set up than Mailchimp or Kit; the full feature set is more than most small accounting firms need; pricing is higher.
Best for: practices with an active lead pipeline and multiple client segments that want to automate follow-up sequences, onboarding workflows, and lead nurturing. Firms with more than 500 active contacts and a growth mindset.
Pricing: from approximately £29 per month for basic email (verify current pricing at activecampaign.com).
Brevo (formerly Sendinblue)
A budget-friendly alternative to Mailchimp with a generous free tier (300 emails per day, unlimited contacts) and a good feature set at lower price points than Mailchimp's paid plans.
Strengths: unlimited contacts even on the free plan; transactional email included; good deliverability; affordable paid tiers.
Weaknesses: less polished user interface than Mailchimp; smaller template library; fewer integrations.
Best for: practices with a large contact list but a modest email volume who find Mailchimp's per-contact pricing unfavourable.
Pricing: free for up to 300 emails per day; paid from approximately £19 per month (verify current pricing at brevo.com).
Ignition (Practice Ignition)
Not a standalone email tool, but worth including because many accounting firms use it for automated client communication. Ignition sends automated proposal reminders, engagement letter follow-ups, and payment notifications. It is not a newsletter tool; it is a client workflow tool with email built in.
Best for: automating the operational side of client communication rather than marketing emails.
Making the right choice
| Situation | Recommended tool |
|---|---|
| Starting from zero, limited budget | Kit (free to 10,000 contacts) or Mailchimp free |
| Growing list, need automation | Kit paid or ActiveCampaign |
| Large contact list, budget-conscious | Brevo |
| Full CRM + email integration | ActiveCampaign |
| Client workflow automation (not marketing email) | Ignition |
All prices are subject to change — verify current pricing on each tool's website before committing.
Key takeaways
- Kit's free tier (10,000 subscribers) makes it the default recommendation for practices starting from zero.
- Mailchimp is the most familiar tool with the largest ecosystem, but its paid pricing increases quickly as your list grows.
- ActiveCampaign is the right choice when you need proper CRM integration and complex automation, not just newsletter sending.
- All tools have free trials — test the interface before committing to a paid plan.
- Verify current pricing on each tool before making a decision; pricing changes regularly.
Frequently asked questions
Can we switch email tools later without losing subscribers?
Yes. All major tools allow you to export your subscriber list as a CSV and import it into a new tool. You may lose historical data (open rates per subscriber, automation history) but the contact list is portable.
Is there a UK-specific email marketing tool?
No UK-specific tool dominates the UK market. The US-based tools (Mailchimp, Kit, ActiveCampaign) all comply with UK GDPR and PECR requirements and are widely used by UK businesses.
Do we need to pay for an email tool to start?
No. Both Mailchimp (500 contacts) and Kit (10,000 contacts) offer functional free tiers that are sufficient for most practices in their first year or two of email marketing.
What is email deliverability and why does it matter?
Deliverability is the rate at which your emails land in the inbox rather than spam. All major tools maintain strong deliverability through technical infrastructure; avoid practices that harm it (purchased lists, spam-trigger language, excessive image-to-text ratios).
Can we use Outlook or Gmail to send our newsletter?
Not effectively. Gmail and Outlook are not designed for bulk sending — they will throttle or block high-volume sends, have no list management, no unsubscribe mechanism, and no analytics. Use a dedicated email marketing tool from the first send.
Return to the email marketing hub for more guides on building and running your firm's email programme.