Bulk Email Boxer vs Mailshake, pricing, warmup, and which tool scales cheaper
Mailshake is one of the oldest names in cold email software, with a strong reputation among sales teams and outbound agencies. It's a solid product, and its entry price is genuinely low. But its pricing is per user, and it caps the number of mailboxes each seat can use, so for teams scaling to 5, 10, or 15 users, the math compounds fast.
If you've been searching for a "Mailshake alternative" or wondering which tool gives you the most value as your team grows, here's the honest comparison.
Pricing
| Plan size | Bulk Email Boxer | Mailshake |
|---|---|---|
| Entry tier (1 user) | $40/mo | $29/user/mo (Starter) |
| Per-user email tier | $40/mo | $49/user/mo (Email Outreach) |
| 3-person team | $40/mo | $147/mo ($49 × 3, Email Outreach) |
| 5-person team | $90/mo | $245/mo ($49 × 5) |
| 10-person team | $350/mo | $490/mo ($49 × 10) |
| Mailboxes | Unlimited | 1 (Starter) / 2 (Outreach) / 10 (per user) |
| Verification | Included | Included (unlimited) |
| Per-seat fee | No | Yes, every user billed |
Let's be straight: Mailshake's entry is cheaper than ours on paper. Starter is $29/user/month ($25 annual) but it caps you at 1 mailbox and 1,500 sends/month, which most serious cold-email programs outgrow immediately. The realistic plan for outreach is Email Outreach at $49/user/month ($45 annual), which gives 2 mailboxes per user and unlimited sends. Sales Engagement (10 mailboxes/user) is $99/user/month.
The story isn't "we're cheaper per seat", it's that Mailshake bills per seat and caps mailboxes per seat, while we don't do either. A three-person Email Outreach team is $147/month for 6 mailboxes total. Our $40 Starter plan is $107 less per month, and connects unlimited mailboxes across the whole team.
Note: Mailshake has no free trial, you pay to evaluate it. Bulk Email Boxer offers a 14-day free trial with no card required.
The warmup problem
Email warmup is not optional for cold outreach. Without it, new domains and inboxes land in spam within days. Mailshake assumes you handle warmup externally, which means finding, paying for, and managing a separate tool.
Bulk Email Boxer includes built-in warmup on every plan, for unlimited mailboxes. When you add a new sender account, warmup starts automatically. No third-party account, no extra invoice, no coordination overhead.
For a team warming up 10-15 mailboxes simultaneously, third-party warmup (Warmbox, Mailwarm, and similar, typically $20-49/month per inbox) can add $200-700/month on top of Mailshake's per-seat fees, a cost you simply don't carry with us.
The real cost driver: per-seat plus capped mailboxes
Mailshake's pricing is per seat, meaning each human user on your team is a separate billing unit, and each seat is capped on the number of mailboxes it can connect (1 on Starter, 2 on Email Outreach, 10 on Sales Engagement). That's a double constraint: you pay per person, and the per-person mailbox cap limits the inbox rotation that governs cold-email volume.
Modern outbound teams often have:
- Multiple mailboxes per user (inbox rotation for deliverability)
- VAs or contractors who help manage campaigns without needing a full paid seat
- Agency setups where one manager oversees many client campaigns
Bulk Email Boxer prices per workspace. One workspace, one flat monthly fee, unlimited team members, and unlimited mailboxes. Whether you have 2 users or 20, or 5 mailboxes or 50, you pay the same plan price.
Sending and sequences
Both tools support multi-step email sequences with reply detection, A/B testing, and scheduling.
Mailshake's sequence builder is mature and has some nice UX polish from years of iteration. It also includes LinkedIn automation and phone dialer integrations on higher tiers, useful for multi-channel sales teams.
Bulk Email Boxer is email-first and deliberately focused. We don't have a built-in dialer or LinkedIn automation. Our sequence engine covers branching logic, spintax, variable injection, and opened/clicked/replied routing. For teams whose primary outbound motion is email, this covers every practical use case.
Deliverability
Mailshake connects to your own SMTP accounts and does not use shared sending infrastructure. That's a good baseline.
Bulk Email Boxer works the same way, SMTP only, your own mailboxes, your own domain reputation. We additionally include RFC 8058 one-click unsubscribe header injection and CAN-SPAM compliance tooling.
Both tools include email verification. Mailshake bundles unlimited verification, and Bulk Email Boxer includes a monthly verification allowance (500 on Starter, 2,000 on Growth, 10,000 on Scale) with flat $6 per 1,000 packs beyond that. Credit Mailshake here: verification is one area where it doesn't nickel-and-dime you.
For a full overview of cold email deliverability best practices, see our deliverability checklist.
Analytics
Both tools provide per-campaign reporting: open rate, click rate, reply rate, bounce rate.
Mailshake includes some additional reporting on its higher sales-engagement tier. For most founders and outbound teams who care about "did this sequence work," both tools give you what you need.
Where Mailshake still wins
- Sales engagement features, call dialer, LinkedIn steps, and deeper CRM integrations on higher plans
- Brand recognition, Mailshake has been trusted by sales teams for years and is easier to get approved in enterprise procurement
- Template library, extensive community templates and playbooks
Where Bulk Email Boxer wins
- No per-seat tax, a team of 10 pays the same plan price as a team of 1
- Unlimited mailboxes, no 1/2/10-per-seat mailbox cap
- Cheaper as your team grows, ~63% less at 5 users ($90 vs $245) and ~29% less at 10 ($350 vs $490) on Email Outreach
- Warmup included, no separate tool, no extra cost, no setup
- Free trial, no card, where Mailshake makes you pay to evaluate
Verdict
Mailshake is a capable, well-established tool, and its $29 Starter tier is genuinely cheap if one mailbox and 1,500 sends a month is all you need. If you're a VP of Sales at a company with Salesforce, established procurement, and a need for multi-channel sales engagement (email + calls + LinkedIn), its higher tiers may be worth evaluating.
But for a founder, early-stage team, or outbound agency, the value math favors flat pricing. A three-person email team is $147/month on Mailshake's Email Outreach (and capped at 6 mailboxes total) versus our flat $40 for unlimited mailboxes. Bulk Email Boxer gives you the most value as you scale, no per-seat tax, no mailbox caps, warmup included, and a free trial to prove it before you pay.
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