Archive for February, 2023

13 years of this blog!

Categories: Uncategorized

Send #SMS to the #USA or #Canada for 1 Cent via an #API

There are a million different APIs that allow you to send SMS messages, but here is a really simple one, that although is limited to the US or Canada, is really cost effective, at 1 US cent per SMS, with no monthly or setup charges.

There is also a free plan that starts at 5 SMS per day, at no cost.

It’s really easy to use, you subscribe to the API here:

to get your API Key, which you include as a HTTP header called “X-RapidAPI-Key”, then you post a body such as the following

    "text" : "Your Authentication code is 74456",
    "phone" : "+17047037094"

To the URL –

(Yes, it’s a AWS lambda function on the back-end)

Categories: Uncategorized

Performance testing – Speed and Coverage. is a service that can obtain a name and profile picture from an email address, it offers an API, such that you can include this functionality into your own systems, be it your CRM system, or marketing platform.

One of the key features of the API, is that you can select which providers to use, when searching for sources. Some sources are more expensive than others, in terms of credits, and the more sources you add, the slower the search will be. Therefore, if you are looking for a very responsive API, you will have to make a trade-off between coverage and speed. Associating a profile picture with an email may be a nice-to-have, but shouldn’t interupt the flow of work, either for your users or staff.

ProviderAvg Time (ms)In Default Set% found

Illustrated above is the list of providers available to AvatarAPI, and the average time in millisecods (1000 ms = 1 second), per request. If all providers are used, and nothing was found by any of them, the complete search would take of 16 seconds, which is probably unaccepable in an interactive environment, but maybe reasonable for batch-processing. However, given that manu of the providers have a low <1% chance of hitting a match, they can be removed, in order to optimize the processing speed.

In the above example, using only Google and Skype, one could achieve 94% of the matches of all providers combined, in 3.7 seconds rather than 16 seconds.

The default set, is the set of providers used when none are specified, and this is calibrated to roughly 10 seconds, although this may be subject to review.

Categories: Uncategorized
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