Growth · alternatives · 2026

24 alternatives to Folderly

Get revenue from every email campaign - 99.9% inbox rate

Folderly is an AI-powered email deliverability platform that helps businesses monitor, test, and prevent spam issues to achieve 99.9% inbox placement rates. It offers free tools including spam word checking and… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Folderly launched in 2023; newer entries below may have overtaken it.

1
Folderly AI▲235
AI-generated emails that hit the inbox and get replies
2025 · generate.folderly.com · its alternatives →
2
Mailivery▲251
Reach the inbox, not the spam folder
2021 · mailivery.io · its alternatives →
3
Slashy▲474
The AI assistant that does email for you
Jun 2026 · slashy.com · its alternatives →
4
Warmy.io▲417
Boost your email deliverability with an AI driven algorithm
2024 · warmy.io · its alternatives →
5
Mailgo▲469
AI-powered cold email platform that boosts deliverability
2025 · mailgo.ai · its alternatives →
6
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 →
7
Folderly Lens ▲107
Domain health analysis for high performance email campaigns
Jul 2026 · lens.folderly.com · its alternatives →
8
mailX by mailwarm▲596
Email deliverability toolkit for humans and AI agents
May 2026 · themailx.com · its alternatives →
9
Platformly▲257
Marketing automation software for SaaS and Ecommerce
2019 · platformly.com · its alternatives →
10
Email Deliverability Booster▲385
Reach every lead, every time
2024 · snov.io · its alternatives →
11
Mailook▲309
Identify & fix your email deliverability issues for free
2021 · mailook.ai · its alternatives →
12
MailAdept by mailwarm▲287
AI Agents & Email deliverability experts on your team
Jul 2026 · mailadept.com · its alternatives →
13
Outboundly.ai▲190
AI-powered cold outreach platform
2023 · outboundly.ai · its alternatives →
14
Inboxly AI▲137
Your AI powered public mailbox to be limitlessly reachable
2024 · inboxly.me · its alternatives →
15
Beeble▲314
The safest platform to exchange emails and store files
2024 · beeble.com · its alternatives →
16
lemlist▲415
The first outreach email platform with personalized images
2018 · lemlist.com · its alternatives →
17
Blastable▲167
Get More Emails Inboxed Using AI
2025 · blastable.com · its alternatives →
18
MailTester.AI▲327
Forward an email and get an AI deliverability report in 30s
2025 · mailtester.ai · its alternatives →
19
Mail Tester▲309
Test the spamminess of your email
2016 · mail-tester.com · its alternatives →
20
MailerCheck 2.0▲145
All-in-one email deliverability platform for businesses
2023 · mailercheck.com · its alternatives →
21
Nureply▲221
Send personalized emails with AI, convert leads to customers
2023 · nureply.com · its alternatives →
22
InboxAlly▲11
The world's most powerful email deliverability tool
2020 · inboxally.com · its alternatives →
23
SuperCold▲122
Multichannel hyper-personalized outbound campaigns with AI
2023 · its alternatives →
24
Castly▲118
Transform ideas into content, with AI supercharge
2023 · getcastly.com · 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 →