Communications
20 providers in Communications. Browse them all below, or narrow by category.
The Communications domain covers programmable messaging: email APIs for transactional and marketing mail, and SMS/voice platforms for texts, calls, and channels like WhatsApp. These services handle the infrastructure and sender-reputation work of reaching an inbox or a phone, powering notifications, verification codes, and customer messaging. Pricing is usage-based per message, so volume economics matter.
Companies
Neutral ordering. Not a recommendation.
46elks
46elks.com
46elks is a Swedish telecom-infrastructure API for developers, providing SMS, voice calls, and virtual phone numbers across dozens of countries with simple pay-as-you-go pricing.
Amazon SES
aws.amazon.com/ses
Amazon SES (Simple Email Service) is AWS's low-cost, pay-as-you-go service for high-volume transactional and bulk email sending.
Amazon SNS
aws.amazon.com/sns
Amazon SNS (Simple Notification Service) is AWS's pub/sub messaging service for sending application and event notifications, including SMS.
Bandwidth
www.bandwidth.com
Bandwidth is a CPaaS provider operating its own Tier-1 all-IP voice network, offering programmable voice, SMS, MMS, and RCS messaging, short codes, toll-free, 10DLC, and emergency-services APIs.
Bird
bird.com
Bird, formerly MessageBird, is an omnichannel communications platform covering SMS, voice, email, and chat, combining CPaaS capabilities with CRM features.
Brevo
www.brevo.com
Brevo, formerly Sendinblue, is a marketing and transactional communications platform spanning email, SMS, and automation for small and midsize businesses.
Infobip
www.infobip.com
Infobip is one of the largest communications platforms globally, operating its own carrier-grade network for SMS, voice, WhatsApp, RCS, and email from Croatia across more than 190 countries.
Loops
loops.so
Loops is an email platform built specifically for SaaS companies, combining marketing and campaign email with transactional sending in one tool.
MailerSend
www.mailersend.com
MailerSend is a transactional email service providing an Email API, SMTP relay, templates, and inbound email routing, built by the team behind MailerLite.
Mailgun
www.mailgun.com
Mailgun, now part of Sinch, is a developer-focused email delivery service for sending, receiving, and tracking email through an API and SMTP.
Plivo
www.plivo.com
Plivo is a cloud communications platform offering SMS and voice APIs, known for competitive per-unit pricing in the budget tier.
Postmark
postmarkapp.com
Postmark is an email delivery service specializing in fast, reliable transactional email such as receipts, password resets, and notifications.
Guided scenarios
Opinionated, ranked shortlists for common needs: the one place we score and rank providers by fit.
Transactional email for startups
Email APIs that listed a free tier when last reviewed, ordered by that, developer focus, and entry price. Confirm current terms with the vendor.
Omnichannel SMS, voice & WhatsApp
SMS/voice providers ranked by channel breadth (SMS, voice, WhatsApp, and short codes) to reach users everywhere.
Cheapest SMS & texting API
SMS / voice providers ranked by value: the cheapest per-message texting and voice APIs.