MailerSend vs Why We Viral: Complete Comparison (2026)
An in-depth comparison of MailerSend and Why We Viral to help you choose the right tool for your business.
Last updated: November 2026
Disclosure: b stack radar is run by the maker of Why We Viral. We score it with the same criteria and sources as every other tool. How we rank tools
MailerSend
6.9/10
MailerSend is a transactional email and SMS API with SMTP relay and a template builder, aimed at developers and businesses sending app-triggered messages.
Why We Viral
Our product6.3/10
Free TikTok analytics tool for social media teams. It analyzes creators and competitors to show which formats, hooks, and topics drive views, and turns the findings into content ideas.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.9/10 | 6.3/10 |
| Scalability | 7/10 | 5/10 |
| Ease of Use | 8/10 | 8/10 |
| Customization | 6/10 | 5/10 |
| Security | 6/10 | 5/10 |
| Support | 8/10 | 5/10 |
| Cost | 7/10 | 10/10 |
| Integration | 7/10 | 3/10 |
| Analytics | 6/10 | 8/10 |
| Pricing | ||
| Free plan | Yes | Yes |
| Cheapest paid plan | $7/mo Hobby | Contact for pricing |
| Estimated cost for 10 users | $110/mo Professional | Free Free |
| Features | ||
| Email Marketing | ||
| A/B Testing | Not listed | |
| Competitor Analysis | Not listed | |
| E-commerce Features | Not listed | |
| Landing Pages | Not listed | |
| Segmentation | Not listed | |
| SMS Marketing | Not listed | |
| Social Media Analytics | Not listed | |
| Social Media Scheduling | Not listed | |
| TikTok Analytics | Not listed | |
| Webinars | Not listed | |
MailerSend vs Why We Viral cost by team size
MailerSend and Why We Viral cost the same at 1 user; Why We Viral costs less from 5 users.
| Team size | MailerSend | Why We Viral |
|---|---|---|
| 1 user | FreeFree | FreeFree |
| 5 users | $7/moHobby | FreeFree |
| 10 users | $110/moProfessional | FreeFree |
| 25 users | $110/moProfessional | FreeFree |
| 50 users | $110/moProfessional | FreeFree |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Which One Should You Choose?
Why choose MailerSend
- Higher Integration score (7/10 vs 3/10)
- Higher Support score (8/10 vs 5/10)
- Better fit for enterprise (6/10 vs 3/10)
- Includes Email Marketing, which Why We Viral lacks
Why choose Why We Viral
- Lower estimated cost for 10 users: Free vs $110/mo
- Higher Cost score (10/10 vs 7/10)
- Higher Analytics score (8/10 vs 6/10)
- Better fit for marketing teams (8/10 vs 4/10)
Pros & Cons
MailerSend
Pros
- Developers can send through a REST API or an SMTP relay, with SDKs and connectors for Laravel, Django, Rails, Symfony, Supabase and Firebase.
- A free tier of 500 emails and a $7 Hobby plan make it cheap to start.
- Capterra reviewers repeatedly praise its responsive support and clear documentation.
- Built-in blocklist and DMARC monitoring help teams protect deliverability.
- Starter and higher plans add an SMS API, and a WhatsApp add-on is available.
Cons
- It is built for transactional email, not full marketing campaign management.
- Reviewers report sudden throttling or account suspensions after bounce or complaint thresholds are crossed.
- Free and Hobby plans keep only one day of activity history.
- SMS is limited to the USA and Canada.
Why We Viral
Pros
- Free with every feature included, no credit card, and no trial that expires.
- Reports explain in plain language which formats, hooks, and topics beat a creator's average.
- AI video analysis and plain-language video search find standout videos without scrolling.
- Projects, shared collections, and up to 5 team members suit agencies and social teams.
- The browser extension collects data with your own TikTok session, and your TikTok login stays in your browser.
Cons
- Covers TikTok only, with no Instagram, YouTube, or other networks.
- Needs the desktop browser extension for Chrome or Edge to collect data.
- No post scheduling, publishing, or social listening.
- No integrations or API; data leaves only as CSV and PDF exports.
- Limits such as 200 tracked profiles and 300 AI analyses a month need a request to raise.
- Users are responsible for making sure their use complies with TikTok's terms.
Not sold on either?
Frequently Asked Questions
MailerSend scores higher on our Marketing criteria: 6.9/10 against 6.3/10 for Why We Viral. The largest gap is in Integration: 7/10 for MailerSend and 3/10 for Why We Viral.
Why We Viral costs less for 10 users: free on its Free plan, against about $110/mo on its Professional plan for MailerSend, billed monthly.
Yes, both MailerSend and Why We Viral have a free plan.
Why We Viral is the better fit for marketing teams: we rate it 8/10 for them, against 4/10 for MailerSend.
MailerSend has Email Marketing, which Why We Viral lacks.
