Letsignit
Letsignit is a centralized email signature management platform that helps you create, deploy, and manage professional email signatures and marketing banners across your entire organization automatically.
Email on Acid
Email on Acid is a comprehensive email pre-deployment platform providing automated testing, content checking, and deliverability tools to ensure your campaigns look perfect across all major inbox providers.
Quick Comparison
| Feature | Letsignit | Email on Acid |
|---|---|---|
| Website | letsignit.com | sinch.com |
| Pricing Model | Freemium | Subscription |
| Starting Price | Free | $74/month |
| FREE Trial | ✓ 14 days free trial | ✓ 7 days free trial |
| Free Plan | ✓ Has free plan | ✘ No free plan |
| Product Demo | ✓ Request demo here | ✓ Request demo here |
| Deployment | ||
| Integrations | ||
| Target Users | ||
| Target Industries | ||
| Customer Count | 0 | 0 |
| Founded Year | 2013 | 2009 |
| Headquarters | Marseille, France | San Antonio, USA |
Overview
Letsignit
Letsignit is a centralized platform designed to help you manage company-wide email signatures and marketing banners effortlessly. Instead of relying on employees to update their own signatures, you can control every detail from a single dashboard, ensuring brand consistency across Outlook and Microsoft 365. You can create professional templates using a drag-and-drop designer and automatically sync them with your corporate directory.
The software transforms every 1-to-1 email into a powerful marketing channel by allowing you to schedule targeted banner campaigns. You can track the performance of these campaigns with real-time analytics on clicks and engagement. It is specifically built for businesses using Microsoft 365 or Google Workspace that want to turn daily email interactions into brand-aligned growth opportunities.
Email on Acid
Email on Acid helps you eliminate the guesswork of email marketing by previewing your campaigns across over 100 different email clients and devices. You can catch rendering issues, broken links, and accessibility problems before you hit send, ensuring every subscriber has a consistent experience. The platform automates the tedious manual testing process, allowing your team to deploy high-quality emails faster and with more confidence.
Beyond simple previews, you can optimize your inbox placement with deliverability tools that check your IP against blacklists and validate your SPF and DKIM records. Whether you are a solo developer or part of a large enterprise marketing team, the platform provides the technical insights needed to bypass spam filters and improve engagement. You can integrate these checks directly into your existing workflow to maintain brand standards across every communication.
Overview
Letsignit Features
- Drag-and-Drop Designer Create beautiful, brand-aligned email signatures in minutes using an intuitive visual editor—no HTML coding skills required.
- Centralized Management Deploy updated signatures to your entire organization or specific departments instantly from one easy-to-use admin dashboard.
- Marketing Banners Add clickable call-to-action banners to your signatures to promote events, webinars, or new content automatically.
- Campaign Scheduling Plan your marketing banners in advance by setting specific start and end dates for different departments.
- Directory Integration Sync your user data directly from Microsoft 365 or Google Directory to keep contact information accurate.
- Analytics Dashboard Track clicks and engagement for every banner campaign to measure the ROI of your daily business emails.
Email on Acid Features
- Unlimited Email Previews. View your email exactly as it appears on 100+ combinations of devices and clients to ensure perfect rendering every time.
- Campaign Precheck. Run an automated checklist to verify links, images, and accessibility standards so you never miss a critical error.
- Spam Testing. Test your emails against 23 different spam filters to identify potential delivery issues before they impact your open rates.
- Email Editor. Make real-time code changes in a live editor and see instant updates across all previews without re-uploading your files.
- Accessibility Checks. Optimize your emails for screen readers and visually impaired subscribers with automated ADA compliance suggestions and color contrast adjustments.
- Image Validation. Check for missing alt text and optimize file sizes to ensure your images load quickly and convey meaning effectively.
Pricing Comparison
Letsignit Pricing
- Up to 100 users
- 1 signature template
- Outlook & Microsoft 365 integration
- Basic signature editor
- Standard support
- Everything in Free, plus:
- Unlimited signature templates
- Marketing banner campaigns
- Campaign scheduling
- Advanced click analytics
- Multi-signature management
Email on Acid Pricing
- 1 user seat
- Unlimited email previews
- Campaign Precheck
- Email editor
- Accessibility testing
- Standard support
- Everything in Basics, plus:
- 3 user seats
- Spam testing
- Deliverability insights
- Advanced analytics
- Priority support
Pros & Cons
Letsignit
Pros
- Extremely easy to set up with Microsoft 365
- Drag-and-drop editor is very user-friendly
- Ensures 100% brand consistency across all departments
- Marketing banners are easy to schedule and track
Cons
- Mobile signature support can be tricky to configure
- Limited customization options for some basic templates
- Occasional sync delays with the global address list
Email on Acid
Pros
- Unlimited testing allows for frequent iterations without extra costs
- Fast rendering speeds for quick campaign turnarounds
- Comprehensive accessibility tools ensure inclusive marketing
- Intuitive interface makes it easy for non-technical users
Cons
- Higher starting price point than some basic competitors
- Spam testing is restricted to higher-tier plans
- Occasional lag when loading a large number of previews