AI · alternatives · 2026

24 alternatives to Gmail inbox Readability Score

Calculating the readability score of an email

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Gmail inbox Readability Score launched in 2021; newer entries below may have overtaken it.

1
Email reading time for Gmail▲122
Medium-like reading time estimation for Gmail
2019 · chromewebstore.google.com · its alternatives →
2
Email Clarity Checker by bant.io▲78
Calculate the readability score of your cold email
2021 · its alternatives →
3
Summ▲50
Save 60% of your time spent reading emails
2024 · its alternatives →
4
Palisade▲125
Land your emails in the inbox and not in spam
2024 · palisade.email · its alternatives →
5
Subscription Score▲372
Never regret subscribing to a mailing list again 💌
2020 · subscriptionscore.com · its alternatives →
6
Inbox Grader by Freshworks▲143
Free metrics 📈 for your business and team email ✉️
2018 · inboxgrader.com · its alternatives →
7
Mailook▲309
Identify & fix your email deliverability issues for free
2021 · mailook.ai · its alternatives →
8
Email Classifier - Gmail is readable now▲6
Visually classify your Gmail inbox and avoid time loss.
2025 · chromewebstore.google.com · its alternatives →
9
Ugly Email▲421
See if an email is being tracked before you open it in Gmail
2015 · uglyemail.com · its alternatives →
10
SellScale Email Grader▲117
Get instant feedback on your sales emails
2024 · sellscale.com · its alternatives →
11
Notion-like Mail Formatter▲106
Pretty and formatted emails just one shortcut command away
2021 · chromewebstore.google.com · its alternatives →
12MM
Mailready – meet the new email deliverability standards▲82
2024 · mailready.info · its alternatives →
13
Grade My Email▲145
Helps you get out of the spam folder.
2020 · grademyemail.co · its alternatives →
14
Hello Inbox▲283
Hey HN, I built an email deliverability SaaS with a RAG system. It's trained on all my knowledge and hundreds of real deliverability use cases from 4+ years experience as an Email Deliverability Specialist on Upwork. It solves a frustration problem a lot of businesses are experiencing. I'm looking for feedback so let me know in the comments.
Aug 2026 · helloinbox.email · its alternatives →
15
Brief▲254
Stop yourself from sending wordy, rambling emails
2017 · safia.rocks · its alternatives →
16
Mailsbe▲66
Find out if your email has been read or not
2022 · mailsbe.netlify.app · its alternatives →
17
Say Less▲269
Write shorter, more effective emails with AI
2020 · sayless.email · its alternatives →
18
ContextSmith Free Email Tracker▲121
Know when and where your emails are read
2017 · chromewebstore.google.com · its alternatives →
19
Sort Gmail Inbox by cloudHQ▲113
Find an email in seconds with these free preset filters
2020 · chromewebstore.google.com · its alternatives →
20
Cold Email Analyzer by Mailshake▲222
Real-time analysis of email subject lines and copy
2018 · mailshake.com · its alternatives →
21
The Sales Email Deliverability Guide▲115
Your ultimate guide to get your emails delivered at scale
2021 · amplemarket.com · its alternatives →
22
EmailThis for Firefox▲72
Turn your email inbox into your reading list.
2017 · addons.mozilla.org · its alternatives →
23
Concisely▲81
Summarize any email in a single sentence with ChatGPT
2023 · chromewebstore.google.com · its alternatives →
24
Mail Track▲168
Gmail extension to track when your emails are opened
2023 · mailtrack.email · 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 →