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Dev tools · alternatives · 2026

ML

24 alternatives to Mailrecipe limits the number of emails you send to a user to 1 per day

Last week, I spammed my users with emails by mistake. I had written an idempotent method to do a transaction and send a confirmation email. I didn't realize the email call is not idempotent. So, when the transaction failed, it retried again and again and spammed the entire user base with emails. I was so embarrassed and wrote an API layer on top of my email delivery service (SendGrid) to ensure that my users won't get more than 1 email per day, irrespective of my architecture or mistakes. I am publishing it as a public API, in case anyone else needs it:…

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. Mailrecipe limits the number of emails you send to a user to 1 per day launched in 2019; newer entries below may have overtaken it.

  1. 1

    Limit the marketing emails you send to a user to 1 per day ✋

    2019 · its alternatives →

  2. 2

    Send hundreds of personalized emails with Gmail.

    2019 · mailmeteor.com · its alternatives →

  3. 3A1

    Back in 2010 I had an idea for a service that would allow people to easily create semi-permanent email aliases so that they could give an email address to people and websites without revealing their real email address. These aliases will continue to work indefinitely unless you choose to block them. My brother and I spent a few months building the initial version and launched the website in July 2010. For the first year we had about 50 signups per month, by 2013 this had increased to 1500 and it's currently around 3500 per month. Similarly, our revenue grew consistently but slowly - doubling…

    2020 · its alternatives →

  4. 4

    Create unlimited email aliases for free. Protect your real email from spam by using a different address for each service. Privacy friendly, anonymous replies.

    2019 · anonaddy.com · its alternatives →

  5. 5

    A new tool that lets you spam back the spammer

    2020 · youvegotspam.mschfmag.com · its alternatives →

  6. 6

    1,000+ Emails per Second with 99%+ Deliverability

    Mar 2026 · mailercloud.com · its alternatives →

  7. 7

    Finally a lightweight template system for your emails!

    2020 · chromewebstore.google.com · its alternatives →

  8. 8

    Give every company you deal with its own email address, all in one account. When one leaks or starts sending spam, delete it, not your life.

    9d ago · clova.email · its alternatives →

  9. 9

    Adiós brings your emails into your inbox just 3 times a day, so you can get sh*t done.

    2018 · adios.ai · its alternatives →

  10. 10

    Send emails to unlimited subscribers with one click.

    2020 · dailysender.com · its alternatives →

  11. 11
    1SecMail▲112

    Free disposable email that actually arrives in real time

    2025 · tmaily.com · its alternatives →

  12. 12

    Unlimited email design. One low-priced subscription.

    2023 · its alternatives →

  13. 13

    Hi HN :) really excited to share this with you. The one thing AI reliably does is generate noise. Half the tools I see launch are just machines for producing more noise across more channels. And people are starting to see this in the form of emails in their inboxes as spam filters are struggling. There used to be a useful signal in email: the effort a sender put into customizing a message was a rough proxy for how relevant it actually was. AI killed that. Now it's customized slop with the appearance of effort with none of the cost. It is painful that the open internet / open channels…

    Jul 2026 · captchainbox.com · its alternatives →

  14. 14SG

    Dan Ariely and I are looking for ways to help people with high email load. One idea was Shortwhale, which we've tested for a few months now. The idea is super simple: It's a place to tell people how you prefer email and it offers a simple contact form that adds the necessary structure to email. Although technically trivial, it works extremely well for Dan. We have ideas on how to expand this but first we'd like to know if someone else might find this useful too (we know that this is only a solution for people who get tons of (unsolicited) email). Underlying to all of this is the idea to put…

    2014 · its alternatives →

  15. 15

    The best idea to grow better

    2021 · mailcot.com · its alternatives →

  16. 16

    Disposable, temporary email checking API and bulk validator

    2024 · mailphin.xyz · its alternatives →

  17. 17

    Stop throwaway emails before they hit your database

    Aug 2026 · isitdisposable.com · its alternatives →

  18. 18

    10,000 free email verifications every month, forever

    Nov 2025 · rafts.ai · its alternatives →

  19. 19

    Find the emails. Clean the list. Pay only for answers.

    Aug 2026 · billionverify.com · its alternatives →

  20. 20

    Send 10,000 emails for just $1 Full Reliability.

    2025 · kaizen-apps.com · its alternatives →

  21. 21

    Block disposable emails with our API. Start for free today.

    2017 · validator.pizza · its alternatives →

  22. 22

    One email API for humans, apps, AI agents

    May 2026 · bavimail.com · its alternatives →

  23. 23

    Verify emails instantly in bulk syntax, MX, disposable more

    2025 · verify.udecode.net · its alternatives →

  24. 24IB

    Hi HN! I'm Louw, founder of the enterprise insurtech scale-up Root[0]. Over the last 8 years, my inbox has been flooded with unsolicited emails, especially since early 2023. Recruitment services, outsourced software development agencies, and a crazy amount of lead generation services (thanks, Apollo!) drowned my inbox. To solve this, I created Unspam. Initially, it was a simple tool for myself and fellow founders to reduce noise. And it worked — about 10% of my emails were swiftly and accurately categorized as unsolicited messages. Given its success, I've decided to package and share Unspam…

    2024 · unspam.io · its alternatives →

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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 →