Inspiration is Mailboard's job.Monitoring is ours.
Mailboard is a library of great emails with competitor tracking on its top plan. Sendsitive is competitor tracking end to end: every email and SMS your chosen competitors send, archived with analytics and change alerts, from $14.50 per month.
- Free plan, no credit card
- Tracking on every paid plan
- Email and SMS in one archive
Sendsitive is a competitor monitoring alternative to Mailboard. Mailboard is an email inspiration platform with a curated library, moodboards, and brand reports, and offers a tracking inbox on its Pro+ plan. Sendsitive gives every competitor you choose a private capture address on every paid plan, archives each campaign they send, and analyzes send times, cadence, and offers with automatic change alerts. Plans run from $14.50 to $99.50 per month, every tracked brand has a public page at sendsitive.com/brands (subject lines, send times, previews, no account; full emails with a free account), and plans with SMS from $49 per month also track competitors' SMS and MMS, which Mailboard does not cover as of September 2026.
Side by side, honestly
Mailboard is a good product for designers and copywriters who want a daily source of ideas, and its boards are genuinely useful for sharing examples. The comparison is about the job: collecting great emails versus watching the competitors you named. Where Mailboard wins, the table says so.
| Sendsitive | Mailboard | |
|---|---|---|
| Self-serve signup with a credit card | ||
| Free plan | ||
| Entry paid price | $14.50/mo | $20/mo, billed yearly |
| Price to track competitors with your own inbox | $14.50/mo | Pro+, $50/mo |
| Private capture address per competitor | Pro+ only | |
| Send-time and cadence analytics | Brand reports | |
| Automatic alerts when a competitor changes tactics | ||
| SMS & MMS tracking | From $49/mo | |
| Save emails to collections | ||
| Public brand pages, no account needed | Subject lines, send times, previews | |
| Curated inspiration library | Explore archive (free account) | 2M+ curated emails |
| Shareable moodboards |
The SMS row is the structural difference: see how competitor SMS tracking works, including the dedicated number and MMS archiving.
Mailboard plans and features were read from mailboard.com/pricing on September 5, 2026; the per-month prices shown are on its yearly toggle and month-to-month billing is higher. If something is out of date, tell us and we will correct it.
Every number above is live. See it yourself on the public brand pages, no account needed; the full emails open with a free account.
What tracking costs from the first plan
Basic
$14.50/mo5 tracked competitors with their own capture addresses. No top tier required.
Starter
$24.50/mo10 competitors, and SMS tracking available as a $49 variant.
Business
$99.50/mo50 competitors and 3 seats included, no per-user add-on.
Mailboard's tracking inbox starts on Pro+ at $50 per month on yearly billing. Full Sendsitive comparison on the pricing page.
Comparing more than one tool? Sendsitive vs MailCharts, Sendsitive vs SendView and Sendsitive vs Milled.
Common questions
- What is the difference between Mailboard and Sendsitive?
- Mailboard is an inspiration and research library: more than two million curated emails you can search, save to boards, and share, with brand reports and, on its Pro+ plan, a dedicated inbox to subscribe to brands yourself. Sendsitive is a monitoring tool: each competitor you add gets a private capture address, every email and SMS they send is archived for your organization from that moment, and you get send-time, cadence, and offer analytics with automatic alerts when a competitor changes tactics.
- How much does Mailboard cost?
- As of September 2026, Mailboard lists a Free plan with limited search and explore, Pro at $20 per month, and Pro+ at $50 per month with 3 users, each plus $10 per additional user; those are the per-month figures on its yearly toggle, and month-to-month billing costs more. Subscribing to brands with your own Mailboard inbox is a Pro+ feature. Sendsitive plans run from $14.50 to $99.50 per month, and competitor tracking is included from the first paid plan.
- Can Mailboard track my competitors?
- On Pro+ you get a dedicated Mailboard email address to subscribe to brands, and Mailboard's brand reports cover send times, promo content, and personalization. On lower plans you request a brand and Mailboard subscribes for you. Sendsitive gives every competitor its own private capture address on every paid plan, tracks SMS and MMS as well, and adds automatic change alerts.
- Does Mailboard track SMS?
- No. Mailboard covers email. Sendsitive tracks competitors' SMS and MMS through a dedicated US number on plans with SMS from $49 per month, archived alongside their email. As of 2026 it is the only self-serve platform that covers both channels.
- What does Mailboard do better?
- Inspiration. Its library is curated, its boards are built for sharing examples with a team or a client, and at $20 per month it is inexpensive for a designer or copywriter who wants a daily source of ideas. If your job is finding and organizing great emails, Mailboard fits. If your job is knowing what your named competitors are doing this week, on email and SMS, that is Sendsitive.
- Is there a free plan?
- Yes. Two things are free. Every brand we track has a public page at sendsitive.com/brands with subject lines, send times, cadence, and previews, no account needed (2,400+ campaigns from 50+ brands across 22 categories). A free account opens the full emails and the Explore archive of the last 15 days, with search and filters. Tracking your own competitors starts at $14.50 per month. Mailboard also has a free plan with limited search and explore.