MailManager vs SaneBox

A direct comparison: how each tool decides what is important, what it costs, and which one fits your inbox.

TL;DR

• MailManager — LLM-driven categorization on content, in any category you describe. Works on day one, no training period. Free credits to start.
• SaneBox — Bayesian sorting that learns from how you move messages. Mature, stable, slow to adapt to brand-new categories.

How they sort, in plain language

SaneBox watches what you do. Over time, the messages you ignore drift into a “SaneLater” folder; messages you act on stay in your inbox. It is a per-user filter trained on your behavior — accurate eventually, opaque about why.

MailManager reads the actual content of each message with a large language model and assigns it to a category you defined in plain English. There is no training period. You write "category: shipping confirmations that have not been delivered yet," and it does that.

Feature comparison

Last verified May 2026 against publicly listed pricing.

Where MailManager wins

1. Works on day one

You should not have to spend two weeks training a filter so it can finally sort your invoices. MailManager reads content and acts immediately.

2. Categories you can explain

SaneBox’s decisions are a black box: a message ended up in SaneLater because of an inferred score. MailManager categorizes based on rules you wrote, so you can argue with them and refine them.

3. Historical backlog

SaneBox is built around “what is hitting your inbox today.” MailManager is built around “you have ten years of mail; help me triage it.”

Where SaneBox wins

1. Maturity

SaneBox has been around for over a decade. The product is polished and well-understood. If you are risk-averse and want the established player, that is a real point in their favor.

2. Set-and-forget

Once trained, SaneBox does not require you to think about categories at all. It quietly moves things. If you do not want to engage with sorting, that ergonomic is worth a lot.

3. Brand-new mail prioritization

For the narrow job of "decide whether a new message is important right now," a behavior-trained filter on years of your moves is hard to beat. MailManager does this with LLM categorization, but a trained Bayesian filter that has watched you for two years is a strong baseline.

Which should you pick?

• Pick MailManager if you want to define categories yourself, you want to clean a backlog, you live in Outlook as well as Gmail, or you want to try the LLM approach with free credits.
• Pick SaneBox if you are happy with implicit sorting based on your behavior, you trust the mature product, and your inbox is mostly Gmail.

FAQ

Is MailManager cheaper than SaneBox?

Free tier vs no free tier. Long term, depends on volume and the plan you pick.

Does MailManager need to learn from my behavior like SaneBox?

No. It reads message content directly. No multi-week training period.

Can I run MailManager alongside SaneBox?

Yes, both connect via OAuth and respect underlying folders/labels. Most users end up picking one.