r/SMS

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Hi There
Have anybody integrated EMAIL/SMS/Whatsapp messaging in their SaaS product. Is that free?
I was building a SaaS product for my own and need to integrate that to my app

I’m currently looking for a SMS solution/provider that can support high-volume outbound messaging (including unsolicited cold outreach), around 1–3 million messages per month.

I have a need to send an SMS text to a specific phone from a Python program when an event completes. This event is often a daily occurrence but not always - I probably send 250-300 messages over a year.

I started doing this a couple of years ago when the carriers allowed SMS via email. I'd just send the message to a phone number at the carrier's messaging server (<phone#>@mms.att.net, for example). The carriers shut these off a few months ago so I went looking for an alternative.

I found 'TextBelt.com' and signed up, buying a quota of over 700 messages for USD$11. I figured getting two years of simple messages for that price was pretty fair, and the coding was easy.

But, TextBelt seems to have died. On April 24, my code reported my remaining quota was 536 messages. On April 25 (and since), the attempt to send a message fails due to a quota of 0.

I have notified TextBelt support and even sent a message to the founder, Ian. I have not heard anything back since the problem started. I fear it is dead and gone.

Until this is either fixed or I find another provider/solution, I added code to send the message via email after the 5th failure.

So I'm back to looking for a stable and inexpensive solution to send a text message to one phone number about daily. In the research I've done in the past week, I've found a number of offerings, all geared to sending marketing, status, and other messages from businesses, with monthly costs. Way too much to spend for my needs.

Any suggestions?

Most SMS I receive from signing up to websites and where they require my phone number and an otp code, it comes from InfoSMS. Even if I send myself a test message from twilio, it comes from InfoSMS.

Is something wrong with my phone number?

A case study from WhatsApp with Air France who have been using WA for marketing, utility, auth. Pretty much all messaging use cases. And the numbers are actually pretty impressive:

*4.5X higher click-through rate for best offer newsletter messages on WhatsApp compared to emails
*85% of all customer care conversations on social took place on WhatsApp
*10 million utility messages sent (WhatsApp Manager, April 8, 2024–April 8, 2025)
*More than 3 million authentication messages sent (WhatsApp Manager, April 8, 2024–April 8, 2025)

There is no way of verifying these numbers, but it paints a good picture of where messaging might be heading.

Meta is pushing WA hard, but in reality rcs and imessage can pretty much deliver the same result.