Alternatives

Products that do what Free & OSS SMTP Bulk Cold Email Sending does

cold0 - bring your own SMTP cold email sending and managing

1. 1
   Super Send 2.0▲157

   Automate cold outreach - email, Linkedin & Twitter

   2023

2. 2
   .meteoremails▲107

   Send cold emails for free! Free and open source project

   2020

3. 3
   Reply▲331

   Send cold emails that feel warm

   2015

4. 4
   Bulk Blizzard▲108

   The easiest way to generate cold email templates in bulk

   2023

5. 5
   Cold Email Warmup by GMass▲98

   A completely free cold email warm-up system

   2021

6. 6
   Cold Email generator▲181

   Write cold emails, that converts

   2024

7. 7
   MassFastmail▲76

   Send mass emails in Fastmail

   2020

8. 8
   Quicklines▲138

   Cold email personalized AI icebreakers to get more responses

   2022

9. 9
   Cold Email Personalization By SalesBlink▲134

   Personalize your cold emails and 10x your reply rate

   2022

10. 10
    Super Send▲127

    Automate your cold outreach via email, Linkedin and Twitter

    2022

11. 11
    Cold Email▲93

    First person cold email sending simulator

    2016

12. 12
    InboxFee▲79

    Make strangers pay for their cold emails

    2020

13. 13
    SendMail▲104

    Send free anonymous email online

    2019

14. 14
    Mass Email PRO▲3

    Bulk email sender with your own SMTP — no monthly fees

    Jun 2026 · mass-email-pro.vercel.app

15. 15
    BaseMailer ▲18

    Design & send personalized bulk emails from Airtable.

    Jan 2026

16. 16PS
    Plain Sending – Send bulk emails using your everyday email client▲8

    2020 · plainsending.com

17. 17
    VibePR▲3

    Privacy-first cold email with your own SMTP

    Jul 2026 · vibepr.in

18. 18OA
    One API for all your SMTPs▲9

    Hi HN, I host my own mail infrastructure and don't rely on third-party tools to send my mails. But in a microservice architecture, managing all the SMTP configs quickly becomes tiresome. After a while I'd always have my credentials and settings scattered in application-properties, bash scripts and environment files. So I've build Brieferl, an app where you can add your SMTP servers and send emails through a single API with a simple JSON payload. You also get logs of when/where emails were sent and HTML previews of messages. I am interested in what you guys think about this. You can…

    Sep 2025 · brieferl.com

19. 19
    sMail

    Load a CSV. Write a message. Send to hundreds via Gmail.

    Mar 2026 · ahnix.gumroad.com

20. 20
    Drip Send▲4

    Personal emails. Real replies. Natively on Mac.

    Apr 2026 · yuzool.com

21. 21
    Send Unlimited Cold Emails for free

    100% Free cold email platform. Connect any mailbox.

    Mar 2026 · freecoldmail.com

22. 22
    Temp Fast Mail▲2

    Simple self hosted 10 minute mail service that's open source

    Jan 2026

23. 23
    ReMail by Quarred▲3

    Own your SMTP. Own your reputation.

    Jul 2026 · remail.quarred.com

24. 24
    Lightreach (Free Outreach Emails)▲3

    Instantly alternative — self-hosted cold email, free

    Jul 2026 · github.com

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