Shortwave built one of the sharpest AI email experiences around: ask a question about your inbox and get a real answer, summarize a forty-message thread in a sentence, draft a reply without leaving the keyboard. The reasons people still shop for a Shortwave alternative are boringly practical. It is Gmail-only. Paid plans now start around $30 per user per month rather than the single digits it launched with. And the AI is metered in daily requests, so the heaviest users are the ones who feel the ceiling.
The 8 best Shortwave alternatives in 2026
Nolario
Our pickAI triage across every channel, not just Gmail.
Best for
Founders on Gmail and Outlook whose work also lives in Slack and Teams
Price
€29/mo (waitlist)
Nolario scores every incoming message for importance and orders your day by it, across Gmail, Outlook, Slack, Teams and calendar, then drafts replies in your voice, learned from what you have actually sent. Where Shortwave makes one mailbox smarter, Nolario makes the set of your channels smaller.
Honest caveat: Shortwave's conversational search over your mail history is still the better experience if that specific feature is why you subscribed.
Superhuman
The fastest email client, with AI writing built in.
Best for
Single-mailbox users who value speed and polish
Price
From ~$30/mo (Starter), ~$40/mo (Business)
Keyboard-first, sub-100ms interactions, AI drafting, summaries and tone adjustment, and it supports both Gmail and Outlook. Priced level with Shortwave, so this is a swap for feel and mailbox support rather than for savings.
Fyxer AI
An AI assistant that organizes and pre-writes.
Best for
People who want their inbox sorted and drafts waiting for them
Price
From ~$30/user/mo
Fyxer categorizes your inbox, writes replies in your style and takes meeting notes, sitting on top of Gmail or Outlook. It does more for you than Shortwave and less with you; there is no conversational search over your mail.
SaneBox
Filtering that works with whatever client you already use.
Best for
People who want a quieter inbox without switching apps
Price
From ~$7/mo (annual)
SaneBox moves unimportant mail out of the way and leaves the rest, on top of any IMAP mailbox. Cheapest meaningful step down from Shortwave. No drafting, no chat channels, and it takes a couple of weeks of training to settle.
Spark
A tidy multi-account inbox with AI attached.
Best for
People who want a free option across several accounts
Price
Free; paid from ~$8/user/mo
Spark's Smart Inbox groups and de-noises, and the AI handles compose and summaries. The free tier is genuinely usable, which is more than most of this list can say. The AI assists; it does not triage across channels.
Canary Mail
AI Sidekick with end-to-end encryption.
Best for
Privacy-minded users on Gmail, Outlook or IMAP
Price
Free tier; Pro from ~$3/mo
Canary writes, summarizes and prioritizes, with encryption built in and support for basically any mailbox. The cheapest paid AI email tool here by a wide margin; the AI is less deep than Shortwave's.
Cora
A brief instead of an inbox.
Best for
People who want to touch email twice a day
Price
Paid (early product)
Cora batches routine mail, sends a digest of what matters and drafts responses for the rest. A genuinely different philosophy: less inbox rather than faster inbox. Still early, and firmly email-only.
Gmail Priority Inbox
The free baseline you already have.
Best for
Anyone who wants to test whether they need a paid tool at all
Price
Free with Gmail
Gmail's own importance markers plus a couple of filters cost nothing and handle the obvious cases. Worth switching on for two weeks before you pay for anything: if it solves your problem, you just saved $360 a year.
Quick comparison
| Nolario | Shortwave | Superhuman | Fyxer | Spark | |
|---|---|---|---|---|---|
| Works with Outlook | |||||
| Slack and Teams in the same feed | |||||
| AI importance scoring | Within email | Split inbox | Categories | Smart inbox | |
| Drafts in your voice | Generic AI | ||||
| Starting price | €29/mo (waitlist) | ~$30/user/mo | ~$30/mo | ~$30/user/mo | Free |
The bottom line
If you love Shortwave and live entirely in Gmail, nothing here beats it at its own game. Leave for Superhuman if you want speed and Outlook, for Fyxer if you want drafts waiting, for SaneBox or Spark if the bill is the issue, and for Nolario if the real problem is that half your urgent work never arrives by email in the first place.
