Lastline is an email signature management platform that helps organizations create, deploy, and manage professional email signatures at scale. Our platform ensures brand consistency across all employee communications.

Businesses of all sizes—from small teams to large enterprises. It's ideal for marketing teams wanting consistent branding, IT departments managing deployment at scale, HR teams onboarding new employees, and small business owners who want a polished, professional look.

Yes. We implement enterprise-grade security: TLS/SSL encryption for all data in transit, AES-256 encryption for data at rest, SOC 2 compliant infrastructure, and your data is never shared with third parties.

Visit lastline.app, click Start for Free, sign in with your Google account, enter your organization details, and complete the onboarding wizard.

Visit our pricing page for current pricing and feature details.

Yes. Upgrade anytime from Settings > Billing and new features are available immediately with prorated billing. To cancel or downgrade, use the guided cancellation flow on the billing page. Your access continues until the end of your billing period, then you're automatically downgraded to Starter. All your data is preserved on downgrade, including employees, templates, and signature designs.

Go to Signatures → Create New Signature, choose your method (Templates, Layouts, or Blank Canvas), customize with your logo and colors, preview, and save. See our Signatures guide for details.

Yes. Choose Blank Canvas when creating a signature to access the HTML editor. Write custom HTML or paste existing signature code. All plans support HTML editing.

Yes. All Lastline signatures are mobile-responsive and display correctly on iOS Mail, Gmail for Android, Outlook mobile, and other mobile email clients.

The integration syncs employees, organizational units, and Google Groups from your directory, then deploys signatures directly to Gmail via API—no employee action needed. Assignment rules automatically assign signatures based on OU, group, or individual.

→ Google Workspace setup guide

No coding required. Setup takes 5-10 minutes with Super Admin access to Google Workspace Admin Console. Just copy/paste a Client ID and OAuth scopes—no Google Cloud Console access needed.

Configure automatic syncing at 15+ minute intervals. We recommend hourly for most organizations, daily for smaller teams, and 15-30 minutes for rapidly growing companies. Manual syncs available anytime.

Coming Soon. Signature campaign features (promotional banners, scheduling, targeting) and analytics (click tracking, performance metrics) are on our roadmap.

All plans include self-guided onboarding wizard, step-by-step documentation, and email support. Enterprise plans include dedicated onboarding sessions.

How do I add extra seats?

Go to Settings > Billing and click Add Seats. Choose the number of seats you need and complete checkout via Stripe. Each extra seat costs $0.25/month. Seats are available immediately after purchase. You can add seats on any paid plan without upgrading.

What happens when I cancel my Grow plan?

Cancellation uses a guided 3-step flow: preview the impact, provide optional feedback, and confirm. Your access continues until the end of your billing period. At period end, your account auto-downgrades to Starter:

Can I cancel extra seats separately?

Yes. Extra seats have a 30-day minimum commitment. After 30 days, cancel them anytime from the billing page. Cancelled seats remain active until the end of the current billing period.

Can I undo a cancellation?

Yes. If you change your mind before the billing period ends, click Reactivate on the cancellation banner in Settings > Billing. Your plan continues as if nothing changed.

What happens to my Gmail signatures if I downgrade?

All deployed Gmail signatures are removed via the Gmail API when your plan downgrades at the end of the billing period. Employees over the Starter 3-seat limit are auto-excluded. Your signature templates and designs are preserved so you can re-upgrade and redeploy anytime.

What happens to my data if I cancel?

Your data is always preserved on cancellation. Employees, signature templates, designs, and organization settings remain in your account. You can re-upgrade to Grow at any time and pick up where you left off.

When are Gmail signatures removed?

Gmail signatures are automatically removed in these scenarios:

What happens when I exclude an employee?

Their Gmail signature is automatically removed via the Gmail API. The removal happens asynchronously. You can re-include the employee at any time and redeploy their signature.

What happens if I disconnect Google Workspace?

All deployed Gmail signatures are removed from your employees' Gmail accounts. Your templates, employee data, and account settings remain intact. You can reconnect Google Workspace anytime and redeploy.

What happens if I delete my account?

All deployed Gmail signatures are cleared from Gmail before your account data is removed. This ensures no orphaned signatures remain in your employees' inboxes.