#1 SMTP.com
SMTP.com is Ziff Davis Martech's transactional email and email API service. We are the industry leader in deliverability. Experience SMTP.com for yourself to see why our customers love us.
Marketing & Sales
Best Email, Messaging & Communications of 2026
Our roundup of the top email, messaging & communications partner and affiliate programs to know in 2026.
32 programs in this category
#2 Nextiva
Nextiva is a cloud-based communications provider delivering hosted unified phone services to U.S companies.
#3 800.com
800.com - Toll-Free and Local Business Number Separate your business and personal numbers. Build stronger customer relationships while tracking your business communications.
#4 Brevo
Brevo is an all-in-one marketing platform trusted by 600,000 businesses. Email, SMS, Chat, CRM, Marketing Automation, and more
#5 WiseStamp
WiseStamp is an award-winning, enterprise-grade email signature management platform designed to scale with the needs of market-leading organizations. Trusted by over 1.2 million customers worldwide, WiseStamp enables businesses to centrally create, manage, and deploy professional, on-brand email signatures effortlessly. WiseStamp turns every email into a powerful brand asset, enabling enterprises to maintain brand consistency, enhance engagement, and drive business impact at scale.
#6 Zenzap
Zenzap is the professional work chat app built to replace WhatsApp and SMS in the workplace. With a modern, mobile-first design and full support across desktop and web, Zenzap keeps conversations organized, secure, and purpose-built for work.
#7 GetResponse Services Inc.
GetResponse offers all-in-one marketing software for marketers, solopreneurs, and small businesses. With 25+ years of expertise, it goes beyond email to help grow audiences, sell courses, & monetize content. Earn 40-60% recurring commission for 12 months.
#8 Kit (formerly ConvertKit)
Kit helps creators work smarter—not harder—with email, automation, and monetization tools that work together to drive continuous growth.
#9 Manychat
Ever seen "Comment X to get Y" on Instagram? That's Manychat! We're the go-to chat marketing platform for creators and businesses, driving growth with automation and meaningful connections. Partner with us and and earn up to 50% recurring commissions!
#10 Moosend
Become a Moosend affiliate! Help businesses by promoting one of the best email marketing and marketing automation tools, and earn recurring commissions.
#11 Sender
Sender.net is an all-in-one email and SMS marketing platform built for businesses that want powerful automation without complexity or high costs.
#12 iContact
iContact's email marketing tools help small businesses grow their audience and design and automate beautiful, personalized emails. Trusted by thousands of small and independent businesses since 2003 to send billions of emails each month.
#13 SaneBox
SaneBox is the leading AI email productivity tool that saves users 12-14 hours a month on email time. Trusted by thousands of professionals - get started today :)
#14 ActiveCampaign
ActiveCampaign is an autonomous marketing platform that uses AI to help businesses grow. The platform unifies email marketing, CRM, and marketing automation to optimize customer journeys, manage relationships, and deliver personalized experiences across multiple channels like email, SMS, and WhatsApp.
#15 AWeber Communications
AWeber is an easy-to-use email marketing platform designed to help you grow your business by building relationships with your audience through effective email communication. Whether you're just starting out or looking to optimize your email marketing strategy, AWeber offers a wide range of tools to make your email marketing simple and efficient.
#16 KrispCall Communications Inc.
KrispCall is an AI-driven cloud phone solution that unifies calls, SMS, voicemails and virtual numbers in one platform. Get local, toll-free, and international numbers from 100+ countries, connect globally, automate workflows with AI Copilot, integrate with 100+ CRMs, and scale your business communications from a single app.
#17 Wati.io
Grow your business on WhatsApp Personalize communication and sell more with the WhatsApp Business API platform that automates marketing, sales, service and support.
#18 Brevo PushOwl
PushOwl is the top-rated omnichannel app on Shopify - powered by Brevo. It packs powerful automation pre-sets, including smart email pop ups, newsletters, abandoned cart recovery, checkout alerts, back in stock reminders & much more! With infinite list size, powerful segmentation engine, with 100+ integrations & world-class support - it is a powerhouse to store owners and agencies
#19 Campaign Monitor by Marigold
Campaign Monitor by Marigold empowers small businesses to create email marketing programs that deliver results. Our easy-to-use yet powerful platform helps customers grow their business while cultivating lasting relationships with their audience.
#20 Textline
Textline is the most secure business text messaging platform for modern customer support, sales, and logistics teams. Textline is HIPAA and SOC2 compliant. Built for teams, popular features include automations, announcements, MMS, templates, and surveys.
#21 Bouncer
Easy to use, yet powerful email verification service, with cool Tech and truly caring People. Helps you clean your email lists and spot invalid email address in real time too.
#22 CometChat
CometChat is a full-stack communication and AI platform that lets product teams embed chat, voice and video calling, moderation, and AI agents directly into their apps — fast. From real-time messaging and live calls to contextual moderation and custom AI copilots, CometChat provides production-ready SDKs, UI kits, and end-to-end infrastructure so teams can launch reliable, compliant, and engaging in-app experiences without building from scratch.
#23 Fastmail
Premium, ad-free email since 1999. An independent provider with the best designed email product on the market, where privacy is priority not a commodity. Your data remains yours whilst having the best user experience and no data harvesting.
#24 InboxAlly
Help boost email deliverability and open rates. InboxAlly customers love knowing that their emails will reach the intended audience every time using their existing ESP.
#25 Quo (formerly OpenPhone)
Win more customers with Quo. The next-generation phone system to engage customers, collaborate with your team, and scale your reach with AI — without losing the personal touch. Rated #1 in customer satisfaction on G2 and trusted by 90,000+ companies, Quo brings calls, texts, and customer information into one easy-to-use, AI-powered platform.
#26 Really Good Emails (RGE Studio)
With over a decade of building email software for the biggest marketing platforms on the planet, RGE Studio (formerly known as Beefree App) enables email makers to quickly and easily create beautiful, high-performing email and landing pages for brands and impact. RGE Studio works with any ESP, is built to work in any inbox, and doesn't require coding skills. Plus, use your inspiration from ReallyGoodEmails.com to gather ideas for your next campaigns.
#27 Salesmsg
Salesmsg is the AI-native revenue communication platform built natively for HubSpot and Salesforce. We unify texting, calling, and AI agents into a single platform that helps businesses respond faster, convert more leads, and never drop a follow-up. Partners refer us into their clients' tech stacks and earn recurring revenue on a tool their clients won't churn off.
#28 SleekFlow
SleekFlow is the AI-powered Omnichannel Conversation Suite for customer engagement. The all-in-one SleekFlow platform creates seamless and personalized customer journeys across everyone's go-to messaging channels, including WhatsApp, Instagram, live chat.
#29 SMTP2GO
SMTP2GO is a scalable, reliable email delivery solution for transactional and marketing email. Worldwide servers, a robust API, and powerful reporting set us apart.
#30 Unitel Voice
Unitel Voice is a virtual phone system that lets startups & entrepreneurs run their businesses from anywhere on any device.
#31 SimpleTexting
We make it easy, fast and affordable to send SMS marketing campaigns or engage in 1-on-1 conversations with customers.
#32 Vida Global Inc.
Vida.io's AI Phone Agents give small, medium, and large businesses true 24/7 support across calls, SMS, email, and web chat — relaying information, handling scheduling, screening and transferring calls, and conversing naturally in 10 languages.