Email & messaging APIs
Transactional email, SMS and notification APIs.
130 products
SMTP2GO
$10/moEmail delivery service with SMTP and API sending, worldwide servers, and delivery reports.
Free planCrucial
$10.90/moAustralian Web Hosting | VPS Hosting | Hosting by Crucial
Mailgun
$15/moTransactional email API and SMTP service for sending, receiving, tracking, validating, and
Free planEmail Security for Australian Businesses.
Email API for developers: send and receive email from your app or agent
Free planSMTP.com
$25/moTransactional and email relay API for high-volume sending
DomainFactory
$0.89/moGerman domain registration, web hosting, email, and website building services.
Global Connectivity, Mobility & Messaging Solutions
Documo
$25/moHealthcare document automation built on HIPAA-compliant cloud fax.
Secure email client software for Windows
GMass
$20/moEmail campaigns sent from inside Gmail
RealSender (plainmail app)
Contact salesSqueeze your emails into a single line, convert email attachments into links
SMS Gateway Hub
Usage-basedBulk SMS, OTP, WhatsApp API & RCS from one DLT-compliant platform
Free planEmail marketing platform for newsletters, campaigns, transactional emails and SMTP mailRel
AuthSMTP
$6/moOutgoing SMTP email relay service for websites and applications.
Envoke
$21/moEmail platform for communications teams, not marketers.
Turkish telecom operator providing phone, SMS, cloud PBX and internet services.
turboSMTP
$14.95/moProfessional SMTP service for transactional and newsletter email delivery
Free planMultichannel mass communication for AI agents
Sendblue
$100/moiMessage for Business — send iMessage, SMS, and RCS from your CRM or via REST API
Free planCommio
Usage-basedVoice & Text Messaging API Platform
Sendio
$3.40/moSendio — Eliminate Email Cyber Threats – Total inbox control and email security.
Enterprise-class system for sending and receiving facsimiles and alpha-numeric pages on
Open sourceUniOne
$6/moTransactional email delivery service with API and SMTP integration for transactional and营销
Free planA high performance Mail Transfer Agent (MTA)
Sent
$45/moOne API for SMS, WhatsApp, and RCS messaging with automated routing, compliance, and per-.
Netcore
Contact salesAgentic Marketing Platform that co-owns your outcomes
Kirim.Email
Contact salesEmail infrastructure for businesses in Indonesia and the ASEAN region.
Professional business messaging gateway for sending and receiving SMS, voice calls and 2-W
46elks
Usage-basedTelecom infrastructure for the web
GatewayAPI SMS
Usage-basedGlobal messaging platform with an SMS gateway for sending and receiving messages worldwide
Free planMitto
Contact salesAn omnichannel messaging platform for SMS, WhatsApp, Viber, Voice, Telegram, and RCS.
Domains, Email, Hosting and Website Builder
SMS, RCS, and email in one platform.
A free implementation of the server-side SMTP protocol as defined by RFC 5321, with some 2
Open sourceBlueOnyx
FreeFree, open-source hosting control panel for Linux servers with web, mail, DNS, and FTP.
Free planOpen sourceThe easier way to send email from web apps.
SendCheckIt
$19/moEmail deliverability and marketing tools to test, validate, and optimize email campaigns.
Free planForwardMX
$2.50/moPremium email forwarding service from ForwardMX ensures that your forwarded emails are del
Notify
Contact salesSending impactful notifications to activate your customers and maximize user experience.
ProSMS.se
Usage-basedSMS gateway for businesses, associations, and organizations with API integrations.
Free planQuriiri
Contact salesFinnish SMS and RCS messaging platform for businesses, with browser sending, APIs, surveys
Sendit
Usage-basedSMS platform for businesses in Israel
Email verification service for real-time checks and bulk list cleaning.
smtphooks.io
$2.99/moCloud SMTP server that forwards incoming emails to your inbox, webhooks, or Zapier
Free planX-Email Verify
$14.80/moX-Email Verify: Verify before sending to increase email deliverability.
Free planTextgrid
Usage-basedCloud communication APIs for SMS, MMS, voice and email
Notifyre
Contact salesSecure online fax and business text messaging service
Text2reach
FreeSMS sending to 190 countries with web sender, API integration and two-way SMS.
Free planTheTexting
Usage-basedSMS API and gateway for OTP, notifications, and marketing messages.
Waypoint
$20/moEmail API for sending transactional emails with a visual template builder
Free planOpen sourceMimePost
$50/moDeveloper-first email API that processes and delivers messages without storing recipient P
Free planMailazy
$49/moEmail service provider for product teams to send transactional emails and newsletters
Free planPinnacle
Usage-basedOne API for RCS, iMessage, MMS, and SMS with developer SDKs
MailChannels
$10/moTransactional email and outbound filtering for platforms with thousands of senders. Trust
Free planVoiceShot
$9/moCloud voice solutions with virtual phone numbers and broadcasting
GENIQ
Usage-basedSimplifying Cloud Communications
FracTEL
Contact salesA nationwide CLEC offering wholesale voice, messaging, and number services to carriers, Vo
Anypost
$20/moTransactional and broadcast email through a simple API, at a fraction of legacy email-API
Free planD7 Networks (D7 Messaging)
Usage-basedGlobal business messaging API for SMS, WhatsApp, OTP and Viber
MX Save
$49/moEmail disaster recovery service for mail server outages.
BudgetSMS.net
Usage-basedSMS gateway for sending messages worldwide via HTTP API.
Communications platform.
TextAnywhere
Contact salesSend low priced SMS to your customers now
Sidemail
$19/moSidemail: Email delivery made simple for SaaS and AI.
Email Marketing Software solution for Windows
MailValid
$19/moEmail verification service from $0.0008/email with credits that never expire.
Free planMailProbe
$5/moVerify email addresses in real-time — check deliverability and detect disposable addresses
Free planSMTPing
$4.99/moEmail verification platform that checks addresses and returns one of 13 verdicts before a
Free planMission-critical communications infrastructure
Onurix
Contact salesOmnichannel mass communication platform (SMS, WhatsApp, voice calls, URL shortener).
Free plan