ConvertKit ◆
ConvertKit (now Kit) is an email-first platform that automates email marketing, newsletter growth, and digital product sales for creators.

CodeTwo (Email Marketing): CodeTwo is a leading email signature management tool for Microsoft 365 and Exchange, trusted by 140k+ companies. Pricing: from $3/user/mo. (data verified August 2026)
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CodeTwo is a software suite for Microsoft 365, Exchange Server, and Outlook, best known for its flagship product, CodeTwo Email Signatures 365. It lets organizations create and manage company-wide email signatures, disclaimers, and marketing banners from a central admin console, ensuring consistent branding across all devices and email clients.
Without a centralized solution, email signatures are a mess: inconsistent formats, missing legal disclaimers, and no way to roll out updates quickly. CodeTwo eliminates these headaches by letting IT admins manage templates, user permissions, and branding rules from one place, with no user training required.
It's built for IT administrators and managed service providers (MSPs) who need a reliable, secure, and scalable signature solution for Microsoft 365 or Exchange. It's not ideal for small teams that only need a simple signature editor for a handful of users.
Companies use CodeTwo to add branded logos and social icons to emails, automatically include legal disclaimers and GDPR notices, run targeted marketing campaigns via email footers, and delegate signature management to department heads without giving away Exchange admin rights. It's also used during mergers to quickly rebrand email footers across the entire organization.
Editorial score from our review methodology — not user ratings.
CodeTwo pricing: from $3/user/mo.
CodeTwo Email Signatures 365 is available on a per-user monthly subscription. The starting price is approximately $3 per user per month (billed annually). This plan includes all core features: centralized signature management, mobile and web signatures, marketing campaigns, disclaimers, and user delegation. A 14-day free trial is available with full access to all features. For exact pricing, especially for volume discounts, contact CodeTwo Sales.
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