Growth · alternatives · 2026

24 alternatives to Fluxmail

AI email inbox and assistant

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.

1
Inbox Zero▲821
Clean Up Your Inbox In Minutes Newsletter management, AI automation, and email analytics. Inbox Zero is the open-source email app that puts you back in control of your inbox.
2023 · getinboxzero.com · its alternatives →
2
Flux▲375
how can we make AI agents more accessible? it has been a crazy journey seeing how AI agents gets smarter every single day but interaction layer is still missing we are launching Spectrum TODAY: one Unified API connect your AI Agents into iMessage, WhatsApp, Telegram and more
Jan 2026 · photon.codes · its alternatives →
3
Upstream▲976
The inbox designed for humans and agents
Jun 2026 · upstream.do · its alternatives →
4
Superflows▲476
AI assistant for email - get to inbox zero faster
2023 · superflows.ai · its alternatives →
5
Inbox AI▲201
AI-Powered Personal Productivity
2024 · its alternatives →
6
Shortwave AI Assistant▲163
Your AI-powered executive email assistant
2023 · shortwave.com · its alternatives →
7
Astro▲308
AI meets email for Mac, iOS and Android
2017 · its alternatives →
8
Mailgo▲469
AI-powered cold email platform that boosts deliverability
2025 · mailgo.ai · its alternatives →
9
MailMaestro▲152
Write AI-powered emails, summarize threads and attachments
2023 · maestrolabs.com · its alternatives →
10
Gmail in the Gemini Era▲371
Ask your inbox anything to get summaries, drafts, & more
Jan 2026 · blog.google · its alternatives →
11
I built a tool to create AI agents that live in iMessage▲54
Hey everyone, I made this thing: https://tryflux.ai/. Here's a demo video: https://screen.studio/share/1y2EnC26 Context: I've tried probably 15 different AI apps over the past year. ChatGPT, note-taking apps, productivity apps, all of it. But most of them are just clutter on my iphone. They live in some app I have to deliberately open. And I just... don't. But you know what I open 50 times a day without thinking? iMessage. So out of mild frustration with the "AI app graveyard" on my phone, I built Flux. What it does: - You describe a personality and what…
Jan 2026 · tryflux.ai · its alternatives →
12
MailBunny.ai▲86
Email based AI assistant, collaborate, summarize & more
2023 · its alternatives →
13
Shortwave AI Email Assistant 2.0▲214
The ultimate search, analysis, and productivity companion
2024 · shortwave.com · its alternatives →
14
Astrobot for Slack▲180
Manage your inbox from Slack
2017 · its alternatives →
15
AgentMail▲275
Email Inboxes for AI Agents
Apr 2026 · agentmail.to · its alternatives →
16
AIMail▲51
Your AI email assistant for faster email communication
2024 · its alternatives →
17
Spark +AI▲181
Your email productivity, supercharged with AI
2023 · sparkmailapp.com · its alternatives →
18
AI Emailyfree tier, from $14.99/mo▲165
Your AI inbox that writes like you + replies on autopilot
Jul 2026 · aiemaily.com · its alternatives →
19
ReplylessAI▲122
AI Email app that's affordable, Hit Inbox Zero
Mar 2026 · replyless.ai · its alternatives →
20
Ghost AI▲86
The First AI-Powered Email Productivity Platform
2023 · its alternatives →
21
AI Email Writer by Mailmeteor▲119
The AI email writer that Google wishes they built
2024 · chromewebstore.google.com · its alternatives →
22
EzMail.AI▲115
Reply to emails 10X faster with pre-filled drafts by AI
2023 · its alternatives →
23
AI Mail Assistant▲63
Generate, translate, summarize & improve emails
2023 · chatgptservices.app · its alternatives →
24
QuickMail AI▲8
Your Personal Email Assistant
2024 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →