Reloop

Reloop is an email delivery platform for transactional and programmatic workflows, offered as hosted plans or for self-hosting. It provides a transactional API and SMTP relay, as well as webhook-based inbound routing and dedicated agent inboxes. First-party SDKs support Node.js, TypeScript, Python, Go, Rust, PHP, and Ruby; compatible frameworks include Next.js, Django, Ruby on Rails, and Laravel.

Analytics cover delivery, opens, clicks, bounces, complaints, SMTP responses, and reputation. Templates support AI-assisted generation, editing, previews, variables, and version history. Hosted plans include 45 days of data retention and set limits for inboxes, webhooks, and custom domains. The Free plan allows 3,000 emails per month and 100 per day; sending pauses when either limit is reached. Pro costs $10 a month for 50,000 emails per month, with extra emails priced at $0.50 per 1,000. Growth costs $20 a month for 100,000 emails per month. Reloop is open source under Apache 2.0 with Reloop Labs use restrictions. Self-hosting has no Reloop license cost, though server and delivery costs still apply.

Reloop brings delivery, inbound workflows, analytics, and templating into one email platform, with hosted and self-hosted options. Check the sending caps and resource limits against your workload before choosing a plan.

Reloop suits developers and teams building transactional or programmatic email workflows who want API, SMTP, or inbound webhook options. Self-hosting may suit teams that want to run it on infrastructure they control.

Reloop is a transactional email platform for developers who need sending and inbound message workflows in the same system. It is strongest for teams integrating email into a backend, especially those that value open-source deployment and detailed delivery telemetry.

Overview

Reloop combines a transactional API with an SMTP relay, then adds webhook-based inbound routing and dedicated agent inboxes. That two-way design suits applications that must process replies or other incoming mail, while an outbound-only sender may make more sense for simpler workloads.

Analytics cover delivery, opens, clicks, bounces, complaints, SMTP responses and reputation. AI-assisted templates can be generated from natural-language instructions, edited live, previewed, populated with variables and tracked through version history. Hosted email content is processed for delivery, service operation and infrastructure safety rather than advertising or resale, and Reloop states that it supports GDPR.

Every delivery hop uses STARTTLS. The software is open source under Apache 2.0 with Reloop Labs use restrictions. Self-hosting removes Reloop license fees, but you remain responsible for servers and delivery costs.

Key features

• Developer integrations: First-party SDKs cover Node.js, TypeScript, Python, Go, Rust, PHP and Ruby. Compatibility with Next.js, Django, Ruby on Rails, Laravel and modern backends reduces integration friction for established development stacks.
• Inbound workflows: Webhook routing and agent inboxes let applications handle incoming email programmatically rather than treating Reloop as send-only infrastructure.
• Delivery and insight: API and SMTP support provide two outbound paths, while analytics expose operational and engagement signals across the mail pipeline.
• Templates: Natural-language generation, variables, previews, live editing and version history support teams maintaining reusable transactional content.
• Operations: Hosted plans impose limits on agent inboxes, webhooks and custom domains. Dedicated IPs are available, and delivery logs are retained for 45 days.
• Support and controls: Support runs through email and Discord, with community or dedicated support depending on plan. Suspicious traffic may be reviewed, throttled or suspended.

Pricing

Free — $0.00, billed Free for everyone: Includes 3,000 emails per month and 100 per day, one agent inbox, one webhook, one custom domain and 45 days of retention. Sending pauses when either cap is reached until the next period or an upgrade, with no overage option. This is suitable for prototypes and low-volume applications, not steady production traffic near either limit.

Pro — $10.00 per month, billed monthly: Raises capacity to 50,000 emails per month and includes five agent inboxes, webhooks and custom domains, with 45-day retention. Extra email costs $0.50 per 1,000. It fits a small production team that needs several workflow endpoints without enterprise contracting.

Growth — $20.00 per month, billed monthly: Provides 100,000 emails monthly, 10 inboxes, 10 webhooks and 10 custom domains. Overage remains $0.50 per 1,000. This is the practical step up for larger applications or multiple environments.

Enterprise — custom pricing: Custom volume, inboxes, webhooks and domains come with SLA support and 45-day retention. Choose it when fixed hosted quotas and standard support no longer fit.

Self-hosted — $0.00 license cost, free forever: Runs on infrastructure you control. Server and delivery expenses still apply, so it favors organizations prepared to operate email infrastructure.

Platforms

Reloop is self-hosted, with hosted plans also offered. Its SDKs and framework integrations cover major server-side ecosystems rather than desktop operating systems.

Who it's for

Choose Reloop for backend teams needing transactional sending, inbound routing, analytics and templating together, or for organizations that want to self-host open-source software. It is less suitable for tiny senders likely to hit the Free plan's daily cap or for teams unwilling to manage infrastructure on a self-hosted deployment.

Pros and cons

• Pros: API and SMTP cover common outbound architectures; inbound webhooks and agent inboxes enable two-way workflows; broad SDK coverage; detailed analytics; STARTTLS on every hop; self-hosting has no Reloop license fee.
• Cons: The Free plan stops sending at 3,000 monthly or 100 daily messages; hosted resources are capped by plan; self-hosting still carries server and delivery costs; 45-day retention may be short for long-term reporting.

Alternatives

For a direct category comparison, see Transactional Email Software. The other linked products are window managers: choose Dexpot, DisplayFusion, 4t Tray Minimizer or AquaSnap for Windows window management; choose Amethyst for macOS tiling; or choose awesome, dwm or herbstluftwm for Linux or Unix-style tiling workflows. The Window Management Software list is the relevant directory for those tasks.

Verdict

Reloop is a strong choice for developers who need outbound and inbound email workflows, useful analytics and flexible deployment in one product. Its main reason to look elsewhere is equally clear: strict Free limits and the operational burden of self-hosting make another service preferable when you need higher dependable volume without managing infrastructure.