ConvertKit vs Microsoft 365

ConvertKit advertises $0/mo and Microsoft 365 advertises $6/mo. ConvertKit has 3 documented extra fees (recurring: +$109/mo), while Microsoft 365 has 4 (recurring: +$107.50/mo). ConvertKit and Microsoft 365 do different jobs, so there is no like-for-like cost winner — compare what each one does before comparing price. Your real cost depends on seats and usage — use the calculator for your numbers.

ConvertKit has 3 documented extra fees: Subscriber-Based Pricing Scaling, Free Plan Send Restriction, No A/B Testing on Free or Creator. Recurring fees add roughly $109/mo on top of the $0/mo advertised price.

Microsoft 365 has 4 documented extra fees: Desktop Apps Require Business Standard, Copilot AI Add-On, Compliance Features Require E5, Teams Phone Add-On. Recurring fees add roughly $107.50/mo on top of the $6/mo advertised price.

Choose ConvertKit if: Creator-focused email marketing platform (now branded as Kit). Free for 10,000 subscribers but limit. Choose Microsoft 365 if: Microsoft's business productivity suite (Outlook, Teams, Office apps). Per-user pricing where deskto. The right choice depends on your team size, usage volume, and which features you need most.

This comparison is compiled from public vendor pricing pages and documentation. It uses illustrative assumptions (see "Cost Comparison Summary"), not your exact seats or usage, and vendor prices change often. Confirm current prices on each vendor's site, and use our calculator with your own usage for a closer estimate. Spotted an error? Email hello@trulycritic.com.