Newoldstamp
Newoldstamp is a professional email signature management platform that helps you create, deploy, and centrally control branded email signatures across your entire organization to boost marketing and brand consistency.
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 | Newoldstamp | Email on Acid |
|---|---|---|
| Website | newoldstamp.com | sinch.com |
| Pricing Model | Subscription | Subscription |
| Starting Price | $13/month | $74/month |
| FREE Trial | ✘ No free trial | ✓ 7 days free trial |
| Free Plan | ✘ No 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 | 2015 | 2009 |
| Headquarters | Lviv, Ukraine | San Antonio, USA |
Overview
Newoldstamp
Newoldstamp is a centralized email signature management tool designed to turn your team's daily business communication into a powerful marketing channel. You can create professional, branded signatures without any coding skills using a drag-and-drop editor. The platform allows you to maintain brand consistency by pushing updates to all employee signatures simultaneously, ensuring every outgoing email looks polished and professional.
Beyond simple contact details, you can add call-to-action buttons, social media icons, and promotional banners to drive traffic to your latest content or offers. It provides built-in analytics so you can track clicks and engagement directly from your dashboard. Whether you are a small business owner or a marketing manager at a large enterprise, it helps you simplify the deployment process across major email clients like Gmail, Outlook, and Apple Mail.
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
Newoldstamp Features
- Centralized Management Update every employee signature across your entire company instantly from one dashboard to ensure brand consistency.
- Signature Generator Create professional signatures in minutes using a user-friendly editor with customizable templates—no HTML or coding required.
- Banner Campaigns Schedule and run email banner campaigns to promote your latest webinars, case studies, or seasonal sales automatically.
- Built-in Analytics Track the performance of your links and banners with detailed click-through data to measure your ROI.
- Department Groups Create different signature templates for various departments like sales or support to deliver more relevant messaging.
- Auto-Update Feature Sync your signatures directly with Google Workspace or Microsoft 365 so changes reflect without manual employee intervention.
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
Newoldstamp Pricing
- Centralized management
- Professional templates
- Social media icons
- Photo and logo upload
- Standard support
- Everything in Branding, plus:
- Banner campaigns
- Banner scheduling
- Click tracking and analytics
- Google Analytics integration
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
Newoldstamp
Pros
- Extremely easy to set up without technical skills
- Excellent integration with Google Workspace and Outlook
- Centralized control saves hours of manual work
- Highly customizable templates look great on mobile
- Responsive customer support team helps with setup
Cons
- No free version for individual users
- Pricing can scale quickly for large teams
- Limited flexibility in some rigid layout templates
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