4.7 out of 5 stars
(880 Ratings)
The ultimate uptime monitoring service. Get 50 monitors with 5-minute checks completely free. Set up in seconds and stay informed about your website’s health at all times.
Website monitoring: Get instant alerts when your website goes down. Reliable and accurate monitoring helps you fix issues before they affect users and prevent revenue loss.
SSL certificate monitoring: Avoid losing visitors due to expired SSL certificates. Get notified 30 days before expiration so you can renew in time.
Ping and port monitoring: Check if your server is online or if your email service is running on port 465. Monitor any port you need with real-time alerts.
Cron job monitoring: Track scheduled tasks with heartbeat monitoring. We verify if the request arrives on time, making sure server-side jobs and internet-connected devices are running properly.
Status pages: Create up to 100 branded status pages, protect them with a password, and allow subscribers to receive updates.
Stay informed with email, SMS, voice calls, push notifications, or integrations with Slack, Zapier, PagerDuty, Telegram, Discord, Microsoft Teams, Google Chat, and more.
Maintenance windows: Pause monitoring when you schedule downtime to avoid unnecessary alerts
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4.7 out of 5 stars
(136 Ratings)
InboxAlly is email deliverability software that moves your messages out of spam and promotions and into the primary inbox. It builds and protects sender reputation, warms new domains and IPs automatically, verifies inbox placement across the major mailbox providers, and monitors blacklists in real time. It layers onto any ESP or SMTP setup without changing how you send. Every plan carries a REST API, a dedicated customer success manager and 24/7 live support. Used by marketers, agencies, cold outreach teams and deliverability consultants.
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Mailsac
You can create any email address ending in @mailsac.com and start receiving messages immediately, without the need for prior setup. All inboxes remain public unless you opt to create an account for more privacy, making it convenient and cost-effective to establish a distinct email address for each online platform you use. You can consolidate all your Mailsac email addresses into a single inbox that you regularly monitor. The service includes email validation, which checks both the format of the address and whether it belongs to a recognized disposable email provider. Mailsac also simplifies email interactions through its REST API, Webhooks, and WebSockets, allowing users to reserve or release email addresses, check incoming messages, download attachments, and manage mail routing. It's important to note that email attachments sent to public addresses cannot be viewed directly through the website and must instead be accessed via the REST API. However, when you receive emails at Private Addresses, you can easily view attachments through the Unified Inbox or an email client that supports POP3. This flexibility makes Mailsac a reliable choice for managing temporary email needs.
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Zunoy Sandbox
Zunoy Sandbox serves as a platform for developers to conduct tests on various communication methods such as email, SMS, webhooks, OTP, and TOTP/MFA flows, all while ensuring that no test data reaches actual users or production environments. By integrating their current SMTP clients, SMS APIs, or webhook endpoints into the Sandbox, developers can monitor the resulting events within a secure testing framework.
When it comes to email testing, the Sandbox offers dedicated inboxes that allow teams to analyze HTML content, email headers, attachments, links, and details related to delivery. For SMS testing, it facilitates OTP and transactional message flows via REST APIs, configurable sender IDs, and customizable templates. Additionally, the webhook testing capability provides distinct endpoints for capturing and analyzing JSON payloads in real time, with features to replay events and categorize them by project. Furthermore, the TOTP/MFA functionality can produce time-sensitive authentication codes derived from secrets or QR codes, enabling developers to test login and verification processes without relying on a physical authenticator, thus enhancing the testing experience significantly.
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