Letsignit vs Exclaimer

Design, manage, and deploy on-brand Outlook email signatures and marketing campaigns for your whole company, all in one secure platform.

Letsignit transforms email signatures into marketing powerhouses for Microsoft 365 users.

Featuring drag-and-drop design, dynamic banner campaigns, internal targeting, smart vCards, and clickable CTAs, Letsignit claims to boost brand visibility (17%) and lead-generation impact (+25%). The subscription model promotes ease of scale and rich analytics, all hosted on Azure with ISO certification.

Exclaimer delivers enterprise-grade, centrally managed signature solutions. It supports Microsoft 365, Exchange, and Google Workspace, and features dynamic logic (e.g., internal vs. external, departmental, CRM-driven), banner campaigns, disclaimers, drag-and-drop editor, analytics, role-based access, and directory syncing (Microsoft Entra ID, Google Directory).

Server-side and client-side deployment options are offered, with preview add-ins for Outlook. The platform is SOC II Type 2 and ISO 27001 certified, with 99.99% uptime across Azure data centers.