Growth · alternatives · 2026

24 alternatives to Smtpfox - Mailboxes for Cold Outreach

Cold email infrastructure that doesn't cut corners.

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
   Super Send 2.0▲157

   Automate cold outreach - email, Linkedin & Twitter

   2023 · supersend.io · its alternatives →

2. 2
   Primeforge▲232

   Google & Microsoft mailboxes for cold email

   2025 · primeforge.ai · its alternatives →

3. 3
   Mailforge▲627

   Cold email infrastructure sorted in minutes

   2024 · mailforge.ai · its alternatives →

4. 4
   Mailshake▲603

   A simple and easy to use solution for cold emails

   2017 · mailshake.com · its alternatives →

5. 5
   mails.wtf 2.0▲243

   Full stack cold outreach platform

   2020 · salesblink.io · its alternatives →

6. 6
   Better Outreach▲165

   A collection of the best cold email templates ever sent

   2022 · its alternatives →

7. 7
   Mailshake 2.0▲164

   Send engaging cold outreach emails, on autopilot

   2021 · mailshake.com · its alternatives →

8. 8
   Cold Mail▲68

   ​Transform cold outreach into warm conversations

   2023 · its alternatives →

9. 9
   Warmbox▲383

   Warm-up your inbox and never land in spam

   2021 · warmbox.ai · its alternatives →

10. 10
    Deliveryman.ai▲186

    Cold email infrastructure on autopilot without Gsuite

    Jun 2026 · deliveryman.ai · its alternatives →

11. 11
    Mailerr▲119

    Automated Infrastructure for boosting Cold Email Delivery

    2025 · mailerr.co · its alternatives →

12. 12
    Warmy.io▲194

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

    2022 · warmy.io · its alternatives →

13. 13
    AtMailWin▲82

    Winning cold mailing campaigns

    2023 · its alternatives →

14. 14
    Closers HQ▲83

    Send unlimited cold emails from unlimited mailboxes

    2023 · ditlead.com · its alternatives →

15. 15
    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 →

16. 16
    Cold Email Warmup by GMass▲98

    A completely free cold email warm-up system

    2021 · gmass.co · its alternatives →

17. 17
    MailSnag▲83

    Automated email testing for dev/staging/QA/CI environments

    2018 · mailsnag.com · its alternatives →

18. 18
    SMTP Ghost▲9

    Cold email marketing software without the ridiculous price

    2025 · smtpghost.com · its alternatives →

19. 19
    Mailsnag▲31

    Seamless Email Testing and Receiving

    2024 · mailsnag.com · its alternatives →

20. 20
    Ultimate Cold Email Research▲88

    The #1 guide to doing research before sending cold emails

    2018 · zakslayback.com · its alternatives →

21. 21
    Coldscale.io▲88

    Reduce your cold email outreach costs by 91%

    2024 · its alternatives →

22. 22
    SalesHandy – Business conversations with a single, integrated platform▲7

    The best cold email outreach software to generate more leads. Automate your outreach with unlimited email accounts, high deliverability, and better open and reply rates.

    2016 · saleshandy.com · its alternatives →

23. 23
    Cold Mail Server▲12

    Managed email infrastructure for your cold outreach

    Jul 2026 · coldmailserver.com · 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 →