LetterStack

Reviewed matches are labeled. Other suggestions come from a shared subcategory, use case, source listing or the same category. Compare features and current plans before choosing.

Product
SendGrid Transactional Email Transactional email is sent to facilitate an agreed-upon transaction between the sender and the recipient, like account creation or purchase receipt emails.
Django Simple Mail - Transactional email made easy in Django Transactional email made easy in Django
Elastic Email Elastic Email is an all-in-one email delivery platform for both marketing and transactional email.
SendFleet Transactional email API via Your AWS SES or managed AWS SES.
PufferPost Transactional email that sends
MailChannels Transactional email API for platforms that send on behalf of others. Every customer, tenant, and AI agent gets its own sending identity, rate limits, and suspension path, so one compromised sender never takes down your a
CommuniQueue The template workflow layer for transactional email
MailYx Faster-than-light transactional email API for developers

Selected by category and available use-case details. A topic match does not establish equivalent features.

Product
Our SMS Send Bulk SMS, OTP & SMS API for businesses in Saudi Arabia
SendSeven AI customer engagement platform & unified messaging API
NeuralHub The unified AI Gateway and GPU platform for developers
Tablr The AI-native backend platform for makers and startups
Mailblock Transactional email sdk for developers
Defapi - Affordable AI API Gateway Affordable AI API gateway - cheap access to OpenAI, Anthropi

Added to this directory in the past 30 days. Dates refer to the directory listing, not the product launch.

Product
WisGate Unified API for AI models
APIKO AI API APIKO AI API is an AI API gateway for developers.
Zuplo The API Gateway reinvented for engineers. Launch your B2B API in record time
Typeauth Typeauth is the next generation API gateway

Profiles grouped by topic. This does not confirm an offer, availability or a connection to this profile.

Profile
James NoCode YouTube · 57K subscribers
NoCode AI Builders YouTube · 13K subscribers
NeuSource Startup Minds 🎯 NeuSource के साथ करें अपने नए बिज़नेस की शानदार शुरुआत ⬇️

Shows and channels grouped by topic. A recommendation does not mean this profile was featured or endorsed.

Show
Gareth Pronovost | Build Without Code YouTube · 42K subscribers
PlanetNoCode YouTube · 36K subscribers
Glide YouTube · 31K subscribers

Retold founder accounts from startups in the same category, each linked to the original.

Story
Tailwind UI's $2 million was five months of a commercial product, not a URL typo Adam Wathan's August 2020 essay says Tailwind CSS had about 10 million installs and that Tailwind UI, then about five months old, was about to cross $2 million in revenue, figures he stated himself beside a slug that mis
ScreenshotOne took three years to $10k MRR and eight months to $20k Dmytro Krasun says ScreenshotOne reached $10k monthly recurring revenue in September 2024, almost three years after launch, then $20k in June 2025, and that the second number changed how much more money still drove him.
AJ said Carrd was about $1.2M ARR and he spends time on the product, not campaigns AJ told SaaS Club Carrd was about $100k MRR, about $1.2 million ARR, and that with two people he invests time in the builder rather than in finding ways to market it; he did not, in the sources fetched here, state $2M AR
WP Engine passed $100M ARR after Cohen made thirty people say they would pay $49 Jason Cohen says he did not start WP Engine until 30 people said they will pay $49 a month, 20 of them did, and in January 2018 he reported the company had passed $100 million ARR and closed $250 million from Silver Lake

Subcategories in the same part of the directory, with the number of listed products.