Instantly
Instantly is an automated cold email outreach platform that helps you scale your lead generation through unlimited email accounts, automated warmups, and a searchable B2B contact database.
Mailbutler
Mailbutler is an email productivity extension for Apple Mail, Gmail, and Outlook that provides tracking, scheduling, and signature management to help you handle your inbox more effectively.
Quick Comparison
| Feature | Instantly | Mailbutler |
|---|---|---|
| Website | instantly.ai | mailbutler.io |
| Pricing Model | Subscription | Freemium |
| Starting Price | $37/month | Free |
| FREE Trial | ✘ No free trial | ✓ 14 days free trial |
| Free Plan | ✘ No free plan | ✓ Has free plan |
| Product Demo | ✓ Request demo here | ✘ No product demo |
| Deployment | ||
| Integrations | ||
| Target Users | ||
| Target Industries | ||
| Customer Count | 0 | 0 |
| Founded Year | 2021 | 2015 |
| Headquarters | New York, USA | Berlin, Germany |
Overview
Instantly
Instantly helps you scale your cold email outreach without worrying about deliverability or account limits. Instead of paying per email address, you can connect unlimited sender accounts to a single subscription, allowing you to distribute your volume and keep your primary domain safe. You can automate the entire process from lead sourcing to personalized sequences and follow-ups.
The platform solves the common headache of emails landing in spam by providing automated account warmup and smart deliverability features. You can manage all your replies in a centralized Unibox, ensuring you never miss a lead. Whether you are a solo founder or a large lead generation agency, the system provides the infrastructure to send thousands of personalized emails daily while maintaining a human touch.
Mailbutler
Mailbutler is an email extension that integrates directly into your existing inbox to help you manage communication more professionally. Instead of switching between different apps, you get advanced features like email tracking, send later, and professional signatures right inside Apple Mail, Gmail, or Outlook. It helps you stay organized by allowing you to attach private notes and tasks to specific emails so you never lose track of important follow-ups.
You can also use the built-in AI assistant to draft emails, summarize long threads, and improve your writing style instantly. The software is designed for freelancers, sales professionals, and small teams who need to maintain a high level of email productivity without leaving their preferred email client. It offers a 14-day free trial and a permanent free plan for basic needs.
Overview
Instantly Features
- Unlimited Email Accounts Connect as many sender accounts as you need without paying extra per seat so you can scale your volume safely.
- Automated Email Warmup Improve your sender reputation automatically by joining a network of real accounts that interact with your emails to prevent spam.
- B2B Lead Finder Access a database of over 160 million verified contacts to find your ideal customers and add them directly to your campaigns.
- Centralized Unibox Manage every reply from every connected email account in one single dashboard so you can respond to leads faster.
- Campaign Personalization Use dynamic variables and AI-driven attributes to make every automated email feel like a personal message written just for the recipient.
- Advanced Analytics Track your open rates, click rates, and reply rates across all campaigns to see exactly what is driving your sales.
Mailbutler Features
- Email Tracking. See exactly when and where your emails were opened and which links were clicked to time your follow-ups perfectly.
- Smart Send Later. Schedule your emails to be sent at specific times so they land at the top of your recipient's inbox.
- Professional Signatures. Create and manage beautiful, branded email signatures with ease to maintain a consistent professional image for your brand.
- Email AI Assistant. Draft replies, summarize long conversations, and fix spelling or grammar errors automatically using integrated artificial intelligence.
- Notes and Tasks. Attach private notes and actionable tasks directly to your emails so you remember every important detail and deadline.
- Message Templates. Save your most-used messages as templates to send personalized responses in seconds rather than typing them repeatedly.
Pricing Comparison
Instantly Pricing
- Unlimited sending accounts
- Unlimited email warmup
- Up to 5,000 emails per month
- Up to 1,000 active leads
- Advanced multi-step campaigns
- Everything in Growth, plus:
- Up to 100,000 emails per month
- Up to 25,000 active leads
- Premium support
- Advanced sequence options
- Unibox for centralized replies
Mailbutler Pricing
- Basic email tracking
- Limited AI Assistant usage
- Email signatures
- Undo send functionality
- Attachment reminders
- Everything in Free, plus:
- Unlimited email tracking
- Real-time open notifications
- Link tracking details
- Tracking details dashboard
- Mobile app integration
Pros & Cons
Instantly
Pros
- Unlimited email accounts provide massive cost savings
- Automated warmup significantly improves inbox placement rates
- Centralized Unibox makes managing multiple accounts easy
- Interface is clean and very easy to navigate
- Lead finder database is integrated directly into the workflow
Cons
- Lead database credits can be expensive to replenish
- Learning curve for setting up custom tracking domains
- Customer support response times can vary during peaks
Mailbutler
Pros
- Integrates directly into your existing email client
- Excellent tracking accuracy for opens and clicks
- Very easy to set up and use immediately
- Professional signature templates look great on all devices
Cons
- Requires a browser or mail extension to function
- AI features require a higher-tier paid subscription
- Mobile functionality is more limited than desktop version