Best AI email clients, compared
Side-by-side comparisons of Fluxmail and other AI email tools on features, privacy, and pricing.
AI email tools fall into two camps. Some, like Fyxer and SaneBox, layer AI onto the inbox you already use and mostly sort and draft. Others, like Fluxmail, Superhuman, and Shortwave, are full clients that rebuild the inbox around AI. Which one fits comes down to your email provider, how much you want the AI to actually do, and what you want to pay.
The table below lines them up on the things that matter most: starting price, whether the AI can take actions on your mail, automatic triage, custom rules, and a unified inbox. For the full breakdown on any tool, including privacy and platform support, open its comparison.
How they compare
| Email tool | Starting price | ||||
|---|---|---|---|---|---|
| Fluxmail | $15/mo ($12.50 annual) | Yes | Yes | Yes | Yes |
| Gmail | Free (Workspace $7+) | Partial | Partial | Partial | No |
| Superhuman | From $30/mo | Partial | Partial | Partial | No |
| Shortwave | From $30/seat | Yes | Partial | Partial | No |
| Notion MailShutting down Sept 2026 | Free | Partial | Partial | Partial | No |
| Spark | Free / from $10/mo | Partial | Partial | No | Yes |
| Fyxer | From $30/mo | Partial | Yes | No | Partial |
| SaneBox | From $5.99/mo | No | Yes | Partial | No |
Starting prices are for a paid plan as of June 2026, and some AI features require a higher tier. Open a comparison for the full breakdown, including privacy and platform support.
Compare in depth
Fluxmail vs Gmail
The AI layer Gmail is missing: priority triage, drafting, and an AI agent.
Read the comparison →Fluxmail vs Superhuman
Every AI email feature for less than Superhuman Business.
Read the comparison →Fluxmail vs Shortwave
The full AI experience at half Shortwave's starting price.
Read the comparison →Fluxmail vs Notion Mail
A natural home for your mail after Notion Mail shuts down.
Read the comparison →Fluxmail vs Spark
Every AI feature on one plan, with no quotas.
Read the comparison →Fluxmail vs Fyxer
A full AI email client for less than Fyxer Professional.
Read the comparison →Fluxmail vs SaneBox
A full AI inbox rather than a filter with beta AI add-ons.
Read the comparison →
Frequently asked questions
- What is the best AI email client?
- It depends on your setup. If you use Gmail or Google Workspace and want AI that acts on your inbox (triage, drafting, and an agent that can archive, label, and search from chat) on a single plan, Fluxmail is built for that. Superhuman and Shortwave are strong picks for their own take on speed and team features, while Spark and SaneBox support the widest range of email providers. The table above lays out the tradeoffs.
- Which AI email client is the cheapest?
- Gmail is free, and Spark and SaneBox have low entry tiers, but those starting prices usually leave out the full AI features. Compared on full-AI plans, Fluxmail at $12.50 per month billed annually comes in under Superhuman, Shortwave, and Fyxer, which put their best AI on $33 to $120 per month tiers. Prices as of June 2026.
- Which AI email client is the most private?
- Most of these tools sync or process your mail on their own servers. Fluxmail does not store your email bodies on its servers at all: they are fetched from Gmail when you open a thread and cached on your device. It encrypts the metadata it handles, blocks trackers by default, uses only AI providers that do not retain your data, and is CASA Tier 2 certified.
- Which ones work with Outlook or non-Gmail accounts?
- Fluxmail, Shortwave, and Notion Mail focus on Gmail and Google Workspace. Superhuman and Fyxer add Outlook, and Spark and SaneBox cover the most providers, including Outlook, iCloud, and IMAP. If your mail is on Gmail, Fluxmail is built specifically for it. If it lives elsewhere, one of the broader tools may fit better today.
- Is Notion Mail still available?
- Notion is shutting down Notion Mail on September 22, 2026. Because it synced with Gmail, your mail stays in your Google account, so you can move to another Gmail client like Fluxmail without migrating anything. The Fluxmail vs Notion Mail page covers how to switch.
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