custom.sig
esignature os
Features

The signature platform your team actually uses.

From AI drafts to one-click install and rich analytics — everything you need in one place.

AI signature generator

Describe your role and brand — get a ready-to-ship signature in seconds. Refine tone, CTA, and layout with a prompt.

Drag-and-drop builder

Reorder blocks, tweak colors, upload logos and photos. Every change previews live as an email-safe HTML render.

Photo, logo & banner blocks

Ready-made blocks with smart cropping, retina rendering, and Outlook-safe fallbacks.

Smart social & contact links

LinkedIn, Instagram, YouTube, calendar links, video intros — with per-link tracking.

Rotating CTA banners

Run a launch, event, or seasonal campaign across everyone's outbound email in one click.

One-click Gmail & Outlook

Connect once, sync forever. No copy-paste, no support tickets, no drift when someone changes device.

Opens & clicks analytics

Real-time dashboards for CTA clicks, campaign performance, and per-person engagement.

Team management

Invite teammates, enforce brand rules, assign templates by role or department.

Deliverability-safe HTML

Table-based, image-fallback, dark-mode aware markup tested against every major client.