Growth · alternatives · 2026

24 alternatives to Winnr

Cold email infrastructure: domains, inboxes & warming

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Mailforge▲627

   Cold email infrastructure sorted in minutes

   2024 · mailforge.ai · its alternatives →

2. 2
   Deliveryman.ai▲186

   Cold email infrastructure on autopilot without Gsuite

   Jun 2026 · deliveryman.ai · its alternatives →

3. 3
   Warmy.io▲417

   Boost your email deliverability with an AI driven algorithm

   2024 · warmy.io · its alternatives →

4. 4
   Warmbox▲383

   Warm-up your inbox and never land in spam

   2021 · warmbox.ai · its alternatives →

5. 5
   SimpleSetup▲89

   Get Google/Yahoo email compliant

   2024 · simplesetup.co · its alternatives →

6. 6
   Mailerr▲119

   Automated Infrastructure for boosting Cold Email Delivery

   2025 · mailerr.co · its alternatives →

7. 7
   Warmy.io▲194

   Auto all-in-one tool to make your email channel reliable

   2022 · warmy.io · its alternatives →

8. 8
   Email Warm-Up by Snov.io▲345

   Warm up your email to boost deliverability and get replies

   2022 · snov.io · its alternatives →

9. 9
   Email Warm-Up Tool by Reply▲311

   Make sure your emails land in the inbox, not spam

   2021 · reply.io · its alternatives →

10. 10
    Email Warmup by Boxward▲144

    Get more cold emails opened, get more sales, automatically

    2022 · boxward.com · its alternatives →

11. 11
    Primeforge▲232

    Google & Microsoft mailboxes for cold email

    2025 · primeforge.ai · its alternatives →

12. 12
    Coldscale.io▲88

    Reduce your cold email outreach costs by 91%

    2024 · its alternatives →

13. 13
    Super Send 2.0▲157

    Automate cold outreach - email, Linkedin & Twitter

    2023 · supersend.io · its alternatives →

14. 14
    Puzzle Inbox▲5

    Infrastructure That Powers Your Cold Email Campaigns.

    Mar 2026 · puzzleinbox.com · its alternatives →

15. 15
    Cold Mail Server▲12

    Managed email infrastructure for your cold outreach

    Jul 2026 · coldmailserver.com · its alternatives →

16. 16
    Cold Email Warmup by GMass▲98

    A completely free cold email warm-up system

    2021 · gmass.co · its alternatives →

17. 17
    Email Warmup▲82

    Automated email warming, lifetime access for just $59

    2021 · ditlead.com · its alternatives →

18. 18
    Warmbly▲8

    Warmbly is the open-source platform for cold email: warm your mailboxes, send campaigns, and triage every reply. Run it on our cloud or self-host the whole thing.

    Jul 2026 · warmbly.com · its alternatives →

19. 19
    E-Warmup▲9

    E-Warmup improves email deliverability by building and repairing sender reputation across major providers. It automates inbox warming with human-like interactions from a large network of real mailboxes, monitors SPF, DKIM, and DMARC, and scans over 100 blacklists with real-time a

    Aug 2026 · e-warmup.com · its alternatives →

20. 20
    OutboundQA▲6

    Catch cold email launch blockers before you send

    Jun 2026 · outboundqa.com · its alternatives →

21. 21
    Email Deliverability API & Checker▲2

    Instantly audit SPF, DKIM & DMARC to stop landing in spam.

    Aug 2026 · web-production-80c77.up.railway.app · its alternatives →

22. 22
    Truelist Outbound▲6

    Cold outbound infrastructure that actually lands

    Aug 2026 · truelist.io · its alternatives →

23. 23
    Chief of Cold▲10

    Your Instantly.ai cold email system set up and managed.

    2024 · its alternatives →

24. 24
    Right2inbox▲10

    Build a Healthy Email Reputation, Reach the Inbox Every Time

    2025 · dev-wamachine.pantheonsite.io · 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 →