Doubletick vs mailboxlayer API
Overview
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CLI (Node.js)
Manual
Detailed Comparison
It is an Email Tracking for Gmail and GSuite, adds the double check marks to your mail if it is read by recipient (Just like WhatsApp), Receives real-time pop-ups notification on your desktop when your emails are opened. | It offers a simple REST-based JSON API enabling you to thoroughly check and verify email addresses right at the point of entry into your system. |
See which emails have been opened; No need to cross-check with your colleagues; Perfect for recruiters and salespeople; Eliminates guesswork; Very easy to use no learning curve; Unlimited email tracking for Gmail and Google Workspace (G Suite); Real-time notification when your emails are opened; Priority support | Syntax & typo check;
Real-time SMTP;
Role check;
Separate addresses using free email providers like "Gmail" or "Yahoo!" from individual domains;
Separate addresses using disposable email providers like "mailinator.com" from individual domains |
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Integrations | |
What are some alternatives to Doubletick, mailboxlayer API?
360Airo
Is an AI-driven multichannel outreach platform that reaches prospects where they're most active while keeping every message personal, timely, and effective.
EmailVerify.io
Free email verifier & checker to validate email addresses instantly. Reduce bounces and verify emails in real time.
Sidemail
Sidemail is an all-in-one email delivery platform for startups that makes sending emails simple. It has everything for delivering and managing emails – email API, transactional emails, email marketing and automation, contact management, no-code email editor, email templates, subscribe forms, and more. Perfect for teams & developers that want reliable deliverability without the bloat. We're based in the EU and GDPR compliant.
Outreach Box
Outreach Box is an AI-powered sales engagement, marketing automation and email outreach platform designed to help businesses find warm leads, scale outreach campaigns, and close more deals. With intelligent automation, unlimited email outreach, advanced deliverability, AI-generated personalized solution, and real-time campaign analytics, Outreach Box enables sales and marketing teams, agencies, and marketers to increase business reach and automate daily works for better output.
Ark
Ark is the AI first email API. Send transactional emails with native MCP support, sub-second delivery, and 99.9% deliverability.
DMARC Monitoring for Better Email Security
Protect your domain with Dmarclytics. Run free DMARC, SPF, and DKIM checks to stop spoofing, enhance email authentication, and improve deliverability with powerful monitoring tools.
AI Powered Cold Outreach that Actually Reaches the Inbox
Use AI to find prospects that need you, automatically craft personalized cold emails for each, and scale effortlessly
Aepto – Centralize and Monitor Domains with AI
Aepto is an AI-powered domain monitoring platform built to give full visibility and control over domains spread across multiple providers. Instead of logging into separate registrar, hosting, and email dashboards, Aepto centralizes everything into one clean interface and continuously monitors domain health using public signals and AI analysis. Once a domain is added, Aepto automatically scans the registrar, hosting setup, email configuration, pricing, and renewal details—no APIs or integrations required. It monitors email deliverability, DNS records, website and subdomain uptime, content changes, and suspicious activity such as nameserver changes or lock status updates. When something goes wrong, Aepto alerts you early and clearly explains what happened and which provider to contact. Aepto also helps track domain expenses, visualize spending, assign ROI, organize domains into folders, and customize pricing and provider details when needed. Advanced features include AI-powered domain discovery, domain watch for tracking expiring domains you don’t own, distributed uptime monitoring, and customizable white-labeled status pages with incidents and maintenance updates. Designed for businesses, agencies, and teams that rely on domains for live websites, email, and APIs, Aepto focuses on proactive monitoring and clarity—so nothing breaks silently and small issues don’t turn into bigger problems.
Postfix
It is a free and open-source mail transfer agent that routes and delivers electronic mail. It is Wietse Venema's mail server that started life at IBM research as an alternative to the widely-used Sendmail program. Now at Google, Wietse continues to support it.
Dovecot
It is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with security primarily in mind. It is an excellent choice for both small and large installations. It's fast, simple to set up, requires no special administration and it uses very little memory.
