Mailchimp's free plan is enough for most accounting firms in their first two to three years of email marketing. It covers a list of up to 500 contacts with 1,000 sends per month, a clean email editor, basic analytics, and the most widely used email platform interface in the world. If you have under 300 subscribers, a monthly newsletter to send, and no complex automation requirements, the free plan does what you need without any cost.

What the free plan includes

Mailchimp's free tier provides:

  • Up to 500 contacts
  • 1,000 emails per month
  • The email editor with a library of pre-built templates
  • Basic audience management (lists, tags, segments)
  • Open rate, click rate, and unsubscribe analytics
  • A single-step automation (a welcome email on sign-up)
  • Sign-up form and landing page builder
  • Mobile app

For a practice sending one newsletter a month to 300 contacts, this covers the entire use case at no cost.

What the free plan does not include

The limitations of the free plan become relevant as your list grows or your strategy becomes more sophisticated:

A/B testing: not available on the free plan. You cannot split-test subject lines or content variants. This matters once you want to optimise performance systematically.

Multi-step automation: the free plan supports a single-email automation trigger (a welcome email). A full welcome sequence — five emails over fourteen days — requires a paid plan. This is a meaningful limitation for any firm building a nurture sequence.

Send time optimisation: Mailchimp's predicted send time feature (which identifies the time each subscriber is most likely to open) is a paid feature.

Comparative reporting: month-on-month and campaign comparison reports are only available on paid plans.

Customer support: free plan users have access to knowledge base articles only. Email and chat support require a paid subscription. If you run into a technical issue, you will need to find the answer yourself.

Mailchimp branding: the free plan adds "Sent with Mailchimp" branding to the footer of your emails. This is a minor cosmetic issue but visible to recipients.

Mailchimp's paid plans (Essentials, Standard, Premium) remove the free plan limitations and add progressively more features. Pricing is based on contact count and changes regularly — verify current prices on mailchimp.com.

The Essentials plan is sufficient for most growing practices: it removes the send limits, enables multi-step automation, removes Mailchimp branding, and adds A/B testing. Standard adds send time optimisation, predictive segmentation, and more detailed reporting.

For most accounting firms, the Essentials or Standard plan is the relevant tier.

Honest assessment for accounting practices

The free plan is sufficient if:

  • Your list is under 500 contacts
  • You send once a month
  • You do not need a welcome sequence longer than one email
  • You are comfortable with self-service support

You need a paid plan if:

  • Your list is growing past 300 contacts (leave headroom before hitting the 500 cap)
  • You want to build a multi-email welcome sequence
  • You want to A/B test subject lines
  • You need proper customer support

Mailchimp may not be the right tool at all if:

  • You want the largest possible free tier — Kit offers 10,000 contacts free, far more generous than Mailchimp's 500
  • You need CRM pipeline functionality — ActiveCampaign is designed for that
  • Your list is growing quickly and pricing is a concern — Mailchimp's per-contact pricing increases faster than some alternatives as the list scales

Mailchimp's strengths that remain on the free plan

Despite the limitations, Mailchimp's free plan has genuine strengths:

Template quality: Mailchimp's email template library is extensive and well-designed. For a professional-looking newsletter with no design expertise required, the templates are excellent.

Deliverability: Mailchimp's sending infrastructure has strong deliverability, which means your emails are more likely to land in the inbox rather than spam. This is a meaningful advantage for any firm that previously used Outlook or Gmail for bulk sends.

Ecosystem: Mailchimp integrates with more third-party tools than almost any other email platform. If you use a website platform, a CRM, or practice management software, Mailchimp almost certainly has a direct integration.

Familiarity: Mailchimp is the most widely used email platform globally. If you have ever used a newsletter tool, the chances are you have used Mailchimp. The learning curve is minimal.

Is Mailchimp worth it for a small accounting firm?

For a practice starting from zero, the recommendation is to begin on either Mailchimp's free tier (for the template library and ecosystem) or Kit's free tier (for the more generous 10,000-contact limit and stronger automation). Do not pay for either until the free tier is genuinely limiting your strategy.

The decision to upgrade to Mailchimp paid — or switch to ActiveCampaign — should be driven by a specific capability you need and cannot get on the free plan, not by a general sense that paid is better.

Key takeaways

  • Mailchimp's free plan covers up to 500 contacts and 1,000 sends per month — sufficient for most small practices with a basic monthly newsletter.
  • Key free plan limitations: no multi-step automation, no A/B testing, no live customer support, Mailchimp footer branding.
  • The Essentials paid plan removes these limitations — verify current pricing on mailchimp.com before committing.
  • Kit's free tier (10,000 contacts) is more generous than Mailchimp's if list growth is a priority.
  • Upgrade from the free plan only when a specific capability limitation is affecting your marketing strategy.

Frequently asked questions

Can we move from Mailchimp free to paid without losing any data?

Yes. Upgrading to a paid plan is seamless — your contacts, lists, templates, and previous campaign data all carry over. There is no migration or setup required when upgrading within Mailchimp.

Does Mailchimp's pricing include VAT?

Mailchimp's advertised prices are typically exclusive of VAT. UK businesses will pay 20% VAT on top of the listed price. Factor this in when comparing tools — a £11/month plan becomes approximately £13.20 including VAT.

Is Mailchimp GDPR compliant?

Mailchimp provides GDPR-compliant data processing tools including consent tracking, data subject request management, and a data processing agreement. You remain the data controller; Mailchimp processes data on your behalf. Review their data processing agreement and update your privacy policy to reference Mailchimp as a data processor.

What happens if we exceed 500 contacts on the free plan?

Mailchimp will prompt you to upgrade before you can send to the full list. You will not lose any contacts or data — the account remains accessible; you simply cannot send to the overage without upgrading. This is a reasonable warning system rather than a hard cutoff.

How does Mailchimp compare to Kit for an accounting firm specifically?

Kit has a more generous free tier and cleaner automation. Mailchimp has better email templates and a larger integration ecosystem. For accounting firms starting from zero, Kit's free 10,000-contact limit makes it the stronger starting point unless you need specific Mailchimp integrations.

See our ActiveCampaign vs Mailchimp comparison or browse the full email marketing hub for more guides.