ClickSend vs Mainstay Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

ClickSend

0.0 (0 reviews)

ClickSend is a cloud-based gateway service that lets you send and receive SMS, email, voice, and even physical mail globally through a single dashboard or automated API integration.

Starting at $??/mo
Free Trial 0 days
VS

Mainstay

0.0 (0 reviews)

Mainstay is an engagement platform that uses empathetic AI and behavioral science to help colleges and businesses support their communities through personalized, automated text messaging conversations.

Starting at --
Free Trial NO FREE TRIAL

Quick Comparison

Feature ClickSend Mainstay
Website clicksend.com mainstay.com
Pricing Model Subscription Custom
Starting Price $??/month Custom Pricing
FREE Trial ✓ 0 days free trial ✘ No free trial
Free Plan ✘ No free plan ✘ No free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment cloud mobile cloud mobile
Integrations Zapier Shopify Salesforce Slack HubSpot WooCommerce ActiveCampaign Microsoft Outlook Google Sheets Zoho CRM Salesforce Workday Slate Ellucian Oracle Microsoft Dynamics Canvas Blackboard
Target Users small-business mid-market enterprise mid-market enterprise
Target Industries education corporate-hr
Customer Count 0 0
Founded Year 2006 2014
Headquarters Perth, Australia Boston, USA

Overview

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ClickSend

ClickSend is a versatile communication platform that helps you reach your customers wherever they are. Instead of managing separate tools for different channels, you can send SMS, rich media messages, emails, and even physical letters or postcards from one central location. It is designed to handle everything from simple marketing blasts to complex, automated transactional alerts that keep your business running smoothly.

You can integrate these communication tools directly into your existing software using their developer-friendly API or manage campaigns manually through the web dashboard. The platform operates on a pay-as-you-go model with no monthly contracts, making it a flexible choice for businesses of all sizes—from local shops sending appointment reminders to global enterprises managing high-volume notifications.

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Mainstay

Mainstay helps you bridge the gap between your organization and the people you serve through purposeful, AI-driven conversations. Originally built to help students navigate the complexities of college, the platform now supports both higher education institutions and modern workplaces. You can use its behavioral science-backed messaging to proactively reach out to individuals, answer their questions instantly, and guide them toward important milestones like enrollment or employee onboarding.

The platform focuses on boosting retention and engagement by meeting people where they are—on their phones. By automating routine interactions with a 24/7 chatbot, you free up your staff to handle more complex, high-touch tasks. Whether you are trying to reduce summer melt in admissions or improve employee wellness, you can scale your impact without increasing your headcount.

Overview

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ClickSend Features

  • Business SMS Send bulk SMS marketing campaigns or individual transactional messages to your customers globally with lightning-fast delivery speeds.
  • MMS Messaging Engage your audience with images, videos, and audio files to make your mobile marketing campaigns more interactive and memorable.
  • Email Marketing Design and send beautiful HTML emails or simple text updates using a drag-and-drop editor that ensures your messages look professional.
  • Voice Notifications Convert your text into speech and deliver it as a phone call to ensure your urgent alerts get noticed immediately.
  • Online Post Upload your documents and ClickSend will print, fold, and mail physical letters or postcards for you without leaving your desk.
  • Two-Way Messaging Receive replies from your customers directly in your dashboard so you can have real-time conversations and provide instant support.
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Mainstay Features

  • Empathetic AI Chatbots. Provide your community with 24/7 instant support using AI that understands nuance and responds with a helpful, human tone.
  • Behavioral Nudges. Send proactive text messages based on proven behavioral science to encourage users to complete specific tasks or goals.
  • Two-Way Texting. Engage in real-time conversations with individuals through a centralized inbox that keeps your entire team on the same page.
  • Campaign Management. Schedule and automate personalized messaging sequences to guide your audience through complex processes like financial aid or benefits enrollment.
  • Data Analytics. Track engagement rates and conversation trends to understand exactly what your community needs and where they are getting stuck.
  • Knowledge Base Integration. Upload your existing handbooks and FAQs so your AI bot can provide accurate, institution-specific answers to every question.

Pricing Comparison

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ClickSend Pricing

SMS Under 2k Messages
$??
  • Pay-as-you-go pricing
  • No monthly subscription fees
  • Global SMS delivery
  • Free inbound SMS
  • API access included
  • 24/7 support
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Mainstay Pricing

Pros & Cons

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ClickSend

Pros

  • No monthly fees or hidden subscription costs
  • Extensive API documentation for easy developer integration
  • Reliable global delivery for time-sensitive SMS
  • User-friendly dashboard requires very little training
  • Excellent 24/7 customer support via live chat

Cons

  • Credit balance can expire if account is inactive
  • Email editor is basic compared to dedicated tools
  • Costs can add up quickly for high-volume users
A

Mainstay

Pros

  • Significantly reduces the burden of repetitive questions on staff
  • High engagement rates compared to traditional email communication
  • Easy to set up and train the AI knowledge base
  • Excellent customer success team provides proactive strategic guidance

Cons

  • Initial setup requires significant time to audit existing content
  • Pricing can be high for smaller institutions with tight budgets
  • Advanced reporting features can feel complex for new users
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