Email, CRM, and work tools for solo businesses — compared on price you can actually predict

Solo Built Tools helps one-person businesses and small teams (1–10 people) choose email marketing, CRM, and work-management tools. Every comparison leads with a conclusion, shows prices on the same basis, and says plainly who a tool is not for.

We compare from the vendors' official pricing pages and help documentation, and we date every figure. Where we have not verified a tool hands-on, we say so. Where a number cannot be confirmed on an official page, we do not print it as fact.

Compare by category

Email marketing

Newsletters, automations, and selling to your list. Start with Kit, Mailchimp, and MailerLite.

CRM

Keeping track of clients and deals without enterprise software. HubSpot comparisons are in preparation.

Workspace & work management

Notes, tasks, and projects for small teams. Notion and ClickUp comparisons are in preparation.

Latest comparison

Best for: creators choosing their first email platform
Kit vs Mailchimp for Creators: Which Should You Choose?
The deciding difference is what each one charges you for: Kit counts unique active subscribers and never caps sends; Mailchimp counts stored contacts and caps sends at a multiple of your list. Prices checked 2026-11-14.

How we compare

  • Conclusion first. Each article opens with who should pick which tool — including when the answer is "neither yet".
  • Same-basis pricing. Same currency, same billing period, same list size, with the counting method (subscribers vs contacts) stated before the table.
  • Sources and dates. Figures come from official vendor pages and carry a check date.
  • Honest limits. Our comparisons are documentation-based unless an article says otherwise. Read the Editorial & Review Policy.

Operated personally by Fujino Kodai from Japan. See About / Operator and the Affiliate Disclosure.