Mailshake
Mailshake is a sales engagement software that helps you automate personalized cold email outreach, track engagement, and manage lead follow-ups to scale your outbound sales and book more meetings.
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 | Mailshake | Email on Acid |
|---|---|---|
| Website | mailshake.com | sinch.com |
| Pricing Model | Subscription | Subscription |
| Starting Price | $29/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 | Austin, USA | San Antonio, USA |
Overview
Mailshake
Mailshake is a sales engagement platform designed to help you automate your outbound outreach at scale. You can send personalized cold emails, monitor opens and clicks, and set up automated follow-up sequences that stop once a lead replies. It simplifies the process of managing high-volume prospecting while maintaining a personal touch that keeps your emails out of the spam folder.
The platform integrates directly with your existing Gmail, Outlook, or SMTP email accounts to ensure high deliverability. You can manage your entire sales pipeline from a single dashboard, making it an ideal solution for sales development reps, founders, and agencies who need to generate more leads without spending hours on manual manual follow-ups.
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
Mailshake Features
- Automated Email Sequences Schedule personalized email sequences and automated follow-ups that trigger based on your prospect's behavior or time intervals.
- Mailshield Cleaning Verify your email lists automatically to reduce bounce rates and protect your sender reputation before you hit send.
- Lead Driver Manage all your lead interactions in one place and track which prospects are most engaged with your content.
- Personalization Tags Use powerful mail merge features to insert custom text, links, and images for every recipient in your campaign.
- A/B Testing Test different subject lines and email body copy to see which versions generate the most replies and conversions.
- Native Phone Dialer Make cold calls directly from your browser and log your call outcomes alongside your email activity for a multi-channel approach.
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
Mailshake Pricing
- Connect 1 email account
- 1,500 emails per month
- Email personalization
- Automated follow-ups
- AI Email Writer
- Gmail/Outlook/SMTP integrations
- Everything in Starter, plus:
- Connect 1 email account
- 5,000 emails per month
- Native phone dialer
- Multi-channel sequences
- Lead Driver dashboard
- Priority support
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
Mailshake
Pros
- Extremely intuitive interface that is easy to navigate
- Excellent deliverability rates with built-in warm-up tools
- Simple setup process for Gmail and Outlook users
- Effective automated follow-ups that increase reply rates
Cons
- No free trial available to test features
- Daily sending limits can be restrictive for some
- Limited reporting depth on the entry-level tier
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