A simpler RPLY alternative for iMessage auto-reply

First, the RPLY and NOX naming

Search results and older pages still use RPLY and the getnoxmail.com domain. The current official site at heynox.com calls the product NOX. Its current positioning is a unified AI inbox for ten messaging platforms. This page keeps "RPLY alternative" in the title so people can find the comparison, but it uses NOX for current claims.

The decision is less about brand names than workflow. NOX helps you collect, rank, search, and draft across many channels. GhostReply does not replace a multi-platform inbox. It exists for a single action: automatically answering eligible one-to-one iMessages from a Mac.

Why people choose NOX

NOX solves inbox fragmentation. Its current site lists iMessage, WhatsApp, Slack, Telegram, Signal, Instagram, X, LinkedIn, Discord, and email. The app puts those conversations in one Mac window, ranks what needs attention, searches by meaning, retains conversation memory, and prepares replies in the user's voice.

It also keeps the human at the send step. The official FAQ is unambiguous: NOX never sends messages automatically. Every draft can be edited, approved, or ignored. That is a good fit for executives, founders, and teams that need a high-volume inbox but cannot delegate final wording to an unattended app.

NOX says messages are indexed and stored locally. AI drafting uses cloud models by default, with a 100 percent on-device mode available in settings, and messages are not stored on its servers. The published requirement is an M1 or newer Mac with macOS 14 Sonoma or later.

Pricing needs a note. The main official page repeatedly advertises $25 per month billed annually. The same page's FAQ says Pro is $30 per month. Treat $25 as the annual-plan display and the current month-to-month rate as Unknown until the checkout confirms it. Source: NOX's official product, privacy, requirements, and pricing page.

Why GhostReply is the focused alternative

GhostReply is useful when ten platforms would be unnecessary overhead. It installs from Terminal, reads recent iMessage history locally, learns how you write to each person, and listens for incoming one-to-one messages. When a routine message arrives, it sends relevant context directly to Groq, cleans the generated answer, waits for the configured delay, and sends through Messages.

The app can target one contact or all eligible one-to-one conversations. It skips group chats, uses keyword heuristics to hold or skip some sensitive and urgent messages, rejects obvious AI framing, and steps aside if you reply manually. The Mac, Messages, network, and GhostReply process must remain available. These controls reduce risk but do not make automatic text generation infallible.

History and reply profiles remain on the Mac. The generation step is not fully local: relevant context goes directly to Groq with your API key. GhostReply's own servers do not receive message content. The purchase includes 10 free replies and then costs $4.99 once. Your Groq account and provider limits are separate from the license.

Choose NOX if:

• Your real problem is switching among many communication apps.
• You want unified search, triage, memory, and drafted replies.
• You want to review every message before it sends.
• An annual subscription fits the value of the full inbox.

Choose GhostReply if:

• You only need iMessage on a Mac.
• Automatic sending is the requirement, not an unwanted risk.
• You prefer 10 free replies and a $4.99 one-time license.
• You accept Terminal permissions, a Groq key, and a running Mac app.

Before using auto-send, read how the Mac setup works and compare the review-first path in GhostReply vs Apple Intelligence. The full Mac app comparison covers Gabby too.