Mixmax is built to send more. OppBox is built to see deals. If you work a book of named accounts rather than a list of cold ones, that difference is the job.
Mixmax is sales engagement layered on Gmail: sequences, open and click tracking, scheduling, templates. It's outbound-first · built for reps whose motion is volume and cadence, sending more and following up automatically. It has been doing that on Gmail for a decade and does it well.
OppBox is an opportunity inbox. It's inbound-attention-first: every email knows its deal · account, stage, amount, close date and risk signals, live from Salesforce or HubSpot · with pipeline views like Ghosted and Renewals that show where a book of business needs you today.
If your day is starting conversations at scale, Mixmax fits. If your day is working deals already in play, you want the inbox that knows the pipeline.
| OppBox | Mixmax | |
|---|---|---|
| Core idea | An inbox that knows your pipeline | Sales engagement layered on Gmail · send more, faster |
| Built for | Account executives working a book of named deals | Outbound-leaning reps and SDRs running cadences |
| Sequences / mass outreach | AI re-engagement sequences · rep-approved first send, bounded follow-ups, reply auto-pause. Not mass cold outbound | Yes · its signature strength, on higher tiers |
| Deal context on every email | Yes · account, stage, amount, close date on the thread | Not the model · engagement data (opens, clicks), not deal state |
| Pipeline views | Yes · Ghosted, Stage, Renewals, Today | No · sequence and engagement reporting |
| Deal signals | Yes · gone quiet, overdue promise, slipping renewal | No · recipient-level engagement signals |
| CRM read / write model | Reads Salesforce or HubSpot live via per-user OAuth · writes only on explicit rep action | Syncs activity to the CRM · integrations gated to top tiers |
| AI | On-demand deal-aware briefs, replies, follow-ups · human always reviews and sends, nothing auto-sent | AI assistance across its Copilot plans |
| Price | Free plan · Core $30/user/month · 14-day trial, no card | Free plan · paid tiers from roughly $29 to $89+/user/month; sequences and CRM integrations on higher tiers |
Mixmax is a fast-moving product and has recently reshaped its plans around Copilots · verify current features, tiers and pricing on mixmax.com. This comparison reflects the structural difference in what each product is built to do, not a snapshot of every feature.
Engagement tools measure whether they opened your email. An opportunity inbox knows whether the deal is slipping.
More sends is the answer when the problem is not enough conversations. When the problem is twenty live deals and finite attention, the answer is knowing which one went quiet, which promise is overdue, and which renewal is drifting · before the quarter tells you.
Your motion is outbound. You live in sequences, you need open and click tracking, scheduling links and templates, and success this quarter means more conversations started. Mixmax is a well-established Gmail-native way to run that playbook.
Your motion is working a book. Your deals live in Salesforce or HubSpot, your conversations live in Gmail, and the cost of the gap between them is a renewal you noticed too late. You want stage, value and signals on the email itself, pipeline views that surface what's slipping, and follow-ups drafted from real deal context that you review and send · nothing blasted, nothing auto-sent.
Fourteen days of Core, no card. Connect Gmail and your CRM and watch every email arrive wearing its deal.
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OppBox · the email app that knows your pipeline.