Growth · alternatives · 2026

24 alternatives to Schrödinger's Link

Never email broken links again

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Schrödinger's Link launched in 2024; newer entries below may have overtaken it.

1. 1
   Linkchimp▲73

   Check for broken links in Mailchimp emails

   2022 · its alternatives →

2. 2
   Send Check It▲156

   Stop sending email with bad: links, images and *FNAME*s

   2017 · its alternatives →

3. 3
   Link Checker by GMass▲102

   Get screenshots of all your links before sending email.

   2019 · its alternatives →

4. 4LD
   Link Drop – Daily newsletter of your bookmarks▲188

   2019 · linkdrop.co · its alternatives →

5. 5
   Broken link checker▲21

   Check broken links on any website in seconds

   Oct 2025 · nexiatools.com · its alternatives →

6. 6
   Linksaber▲85

   Read later links to your email, weekly

   2023 · its alternatives →

7. 7
   Mail Tester▲307

   Test the spamminess of your email

   2016 · its alternatives →

8. 8
   PutsMail▲195

   Test your HTML emails before sending them

   2015 · its alternatives →

9. 9
   LinkToInbox▲93

   Email confirmation has never been easier

   2023 · its alternatives →

10. 10
    Email Newsletter Checklist by MailSwift▲180

    Send error free emails that your customers will love

    2018 · its alternatives →

11. 11
    Check My Links▲82

    Highlights broken links on page

    2014 · its alternatives →

12. 12
    Send Test Email▲80

    A fast and free, online way to send a test email

    2022 · its alternatives →

13. 13
    Proof by SparkLoop▲111

    Display your newsletter stats on your website for free.

    2020 · its alternatives →

14. 14
    GoodBits▲147

    Build great email newsletters in minutes

    2014 · its alternatives →

15. 15
    Linkedin Email Finder by Mailmo▲124

    Find verified emails on Linkedin with one click (literally)

    2023 · its alternatives →

16. 16
    Postmark Express▲133

    The only webcomic about the Wild West of sending emails

    2021 · its alternatives →

17. 17
    RangoRango▲100

    Send an email with a link. Get a screenshot. 📬

    2018 · its alternatives →

18. 18
    Read on Mail▲92

    Why "read it later" - email yourself now ⚡

    2019 · its alternatives →

19. 19
    Eventually▲96

    Your X bookmarks, emailed back as your personal newsletter

    13d ago · geteventually.com · its alternatives →

20. 20
    SMTP‑Test.com▲103

    One‑click SMTP server test with real‑time protocol logs

    2025 · smtp-test.com · its alternatives →

21. 21
    Dr. Link Check▲75

    Broken link checker with malware and parked domain detection

    2018 · its alternatives →

22. 22
    Is This Phishy▲83

    Stop phishing scams in their tracks

    2023 · its alternatives →

23. 23VT
    VaultSandbox – Test your real MailGun/SES/etc. integration▲58

    I've spent the last few months working on something I wish I'd had years ago. I kept running into the same issue: CI green, production mail broken. TLS handshake failures, DKIM alignment mismatches, SPF soft-fails ... the stuff that only surfaces when real mail servers are involved. Most test tools (Mailpit, MailHog) are catch-alls. They confirm "an email was sent" but don't validate the protocol. They also aren't designed for network-exposed environments: no auth, unprotected Web UI, easy to enumerate messages. VaultSandbox is my attempt at fixing that. It's a self-hosted SMTP gateway…

    Jan 2026 · vaultsandbox.com · its alternatives →

24. 24
    ConstantLink▲75

    Links for your e-books that work forever

    2021 · its alternatives →

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 →