Alternatives

Products that do what Email Spam Checker by Autoklose does

Send spam-free, high-converting emails

1
Warmup Inbox▲204
Free email spam checker & inbox placement tester
2023
2
Unspam.email▲309
Email spam checker and newsletter heatmap prediction.
2020
3
You've Got Spam▲309
A new tool that lets you spam back the spammer
2020
4
Mail Tester▲307
Test the spamminess of your email
2016
5
mailX by mailwarm▲602
Email deliverability toolkit for humans and AI agents
May 2026 · themailx.com
6
Vetter▲134
Test if your emails will be spammed, using real accounts.
2020
7
KleanMail Free Email Verifier▲177
Emails inboxed, always.
2022
8
Autoklose 1.0▲172
Machine learning assisted email follow-up
2018
9
Spam Check▲93
A free JSON API to check your email messages' spam scores
2015
10
Mailwarm 2.0▲683
The email warmup tool, upgraded for deliverability.
Jun 2026 · mailwarm.com
11
Email Bounce Checker from BlockSurvey▲98
Privacy-focused email bounce checker. No ads, no trackers.
2022
12
Breadcrumbs Free Email Verifier▲160
Free forever to validate up to 10,000 emails with 1-click
2020
13
Free Email Verifier▲202
The first free and accurate email verification service
2020
14
MailCheck▲49
Stop Free Trial Abuse with Advanced Email Verification
2025
15
Email Warmup By SalesBlink▲151
Fully automated email warm-up. Never land in spam again!
2022
16
mailfloss▲175
Remove fake and bounced emails without code or spreadsheets
2019
17
Checker▲124
Detect fake signups in under 200ms with an easy-to-use API
2025
18
Email Template Library by Autoklose▲94
A free collection of well-crafted and effective email copy
2020
19
MailerCheck 2.0▲145
All-in-one email deliverability platform for businesses
2023
20
Mailtrack.io▲282
The best email tracking solution I've found. Free
2014
21
Cold Email Analyzer by Mailshake▲222
Real-time analysis of email subject lines and copy
2018
22
Reacher▲208
Check if an email exists without sending any email.
2020
23
Email Permutator by Mailmeteor▲82
Find anyone's email address
2021
24
Autoklose 2.0▲124
Cold email reimagined 💌
2020

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