AI · alternatives · 2026

24 alternatives to Inbox Hero

AI Email Manager For Microsoft 365

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 AI▲201
AI-Powered Personal Productivity
2024 · its alternatives →
2
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 →
3
Mailgo▲469
AI-powered cold email platform that boosts deliverability
2025 · mailgo.ai · its alternatives →
4
Upstream▲976
The inbox designed for humans and agents
Jun 2026 · upstream.do · its alternatives →
5
Zero▲845
Hi HN, I’m Nizar, and I’m building Zero (https://0.email) — an AI-powered email client that manages your inbox for you. Email hasn’t changed in decades, even though the way we work has. The average knowledge worker now spends close to 30% of their week on email, constantly reacting, replying, and sorting through noise. It’s become one of the biggest productivity sinks in modern work. At the same time, AI has transformed how we write, plan, and collaborate — yet our inboxes are still stuck in the past. I built Zero to fix that. Zero automatically prioritizes, organizes, and even…
2025 · 0.email · its alternatives →
6
TextCraft AI▲181
Smart inbox, smart emails - AI at your service
2023 · chromewebstore.google.com · its alternatives →
7
April▲664
Reach Inbox Zero by speaking with your email & calendar
2025 · apps.apple.com · its alternatives →
8
Mailmaker AI▲205
AI-powered email marketing with built-In components
2023 · mailscribe.com · its alternatives →
9
AI Emailyfree tier, from $14.99/mo▲165
Your AI inbox that writes like you + replies on autopilot
Jul 2026 · aiemaily.com · its alternatives →
10
Gentle Invoice▲140
AI-powered inbox assistant for managing invoices
2025 · its alternatives →
11
CXassist▲136
Put your inbox on autopilot with AI
2023 · cxassist.io · its alternatives →
12
Shortwave AI Assistant▲163
Your AI-powered executive email assistant
2023 · shortwave.com · its alternatives →
13
Folderly AI▲235
AI-generated emails that hit the inbox and get replies
2025 · generate.folderly.com · its alternatives →
14
MailMaestro▲152
Write AI-powered emails, summarize threads and attachments
2023 · maestrolabs.com · its alternatives →
15
Outerspan▲205
Deploy agents that have their own email inbox
2025 · outerspan.com · its alternatives →
16
Spark +AI▲181
Your email productivity, supercharged with AI
2023 · sparkmailapp.com · its alternatives →
17
AI Email Writer by Mailmeteor▲119
The AI email writer that Google wishes they built
2024 · chromewebstore.google.com · its alternatives →
18
ReplylessAI▲122
AI Email app that's affordable, Hit Inbox Zero
Mar 2026 · replyless.ai · its alternatives →
19
Auto Gmail▲82
Let AI draft answers to all your inbound emails
2023 · chromewebstore.google.com · its alternatives →
20
InboxJoy - Filter Noise from Social DMs▲77
AI Social Media Automations for a Lifetime License
Apr 2026 · inboxjoy.online · its alternatives →
21
AIMail▲51
Your AI email assistant for faster email communication
2024 · its alternatives →
22
Delos Mail▲79
Delos AI drafts your replies and organizes your emails
Jan 2026 · delos.so · its alternatives →
23
Clarity AI▲20
The next generation of AI-powered email management
2025 · its alternatives →
24
Inpost.ai - Limited Access Beta v1.0▲7
Smartly Organise your Inbox using AI-Technology
2024 · inpost.ai · 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 →