Mails.ai vs Wiza: Which Do You Actually Need in 2026?
Mails.ai sends cold emails. Wiza pulls contact data - emails and phone numbers - from professional profile workflows. Comparing these two is like choosing between a car and a gas station: they solve different problems entirely.
Here's how to think about both, what each actually costs, and where your money is better spent.
30-Second Verdict
Use Mails.ai if you already have a contact list and need a budget sender with unlimited inboxes.
Use Wiza if you need to pull emails and phone numbers from professional profiles and can stomach the credit costs.
Skip both if you want verified contact data without credit anxiety - Prospeo delivers 98% email accuracy with a free tier and no contracts, then pair it with whatever sender you like.
What Each Tool Actually Does
| Mails.ai | Wiza | |
|---|---|---|
| Category | Cold email sender | Contact data extraction |
| Core function | Send & warm up emails | Reveal emails & phones |
| Built-in database | No | Profile/URL-based extraction (via extension) |
| Email sending | Yes | No |
| G2 rating | 4.9/5 (5 reviews, inactive profile) | 4.5/5 (1,142 reviews) |
| Trustpilot rating | 3.7/5 (33 reviews) | N/A |
Wiza's G2 score carries real weight with over a thousand reviews. Mails.ai's 4.9 comes from five reviews on an inactive G2 profile - the Trustpilot score of 3.7/5 from 33 reviews is a far more honest signal.
Mails.ai: Budget Sender, Rough Edges
Mails.ai is a cold email platform, not a data tool. You connect unlimited email accounts, and it handles inbox rotation, built-in warmup, and campaign automation. There's also an AI writer for drafting sequences and a Zapier integration for workflow automation.
On verification: paid plans include monthly email verification credits - 2,000 on Startup, 10,000 on Growth, and 50,000 on Pro - so you can clean lists before sending. What's missing is any built-in contact database. You're bringing your own list or sourcing contacts elsewhere.
Pricing
Annual billing cuts costs roughly in half:
| Plan | Monthly | Annual | Contacts/mo |
|---|---|---|---|
| Free | $0 | $0 | Unlimited email accounts + unlimited warmup |
| Startup | $49/mo | $24/mo | 1,000 |
| Growth | $99/mo | $49/mo | 5,000 |
| Pro | $199/mo | $99/mo | Unlimited |
All paid plans include unlimited email accounts, unlimited emails per month, AI writer, custom tracking domain, unlimited team members, and unlimited campaigns.
What Users Say
What people like: It's affordable compared to Lemlist and other senders. Unlimited inboxes are a genuine scaling advantage, and recent reviews say deliverability has improved.
What people don't: Support is the recurring pain point. Multiple Trustpilot reviewers and a detailed Reddit comparison describe support as unresponsive. Cancellation requires emailing for a Stripe portal link - you can't self-cancel in-app. That's a red flag for any SaaS product in 2026.
Let's be honest: if responsive support matters to your team, Lemlist is the safer bet despite the higher price tag.
Wiza's credit overages can hit $500/month. Mails.ai has no contact database at all. Prospeo gives you 300M+ profiles with 98% email accuracy and 125M+ verified mobiles - starting free with 75 emails/month. Source your data for $0.01/email, then send with whatever tool you want.
Stop paying $0.35 per phone number. Get verified contacts at a fraction of the cost.
Wiza: Great Extension, Credit Costs Add Up
Wiza works well for what it does. But users consistently call out the pricing and credit limits as the downside. Before you commit, understand the plan limits and what happens when you blow past them.
The Credit Math
Wiza's pricing looks straightforward until you run the numbers:
| Plan | Monthly | Annual | Emails/mo | Phones/mo |
|---|---|---|---|---|
| Free | $0 | - | 20 | 5 included |
| Starter | $49/user | - | 100 | 100 included |
| $99/user | $83/user | 500 | Pay-per-use ($0.35) | |
| Email + Phone | $199/user | $166/user | 500 | 500 included |
Overages run $0.15 per extra email and $0.35 per phone.
The annual Email and Email+Phone plans include unlimited emails (and unlimited phone numbers on Email+Phone), but total exports are capped at 30,000/year. For a 3-person team doing heavy outbound, that's about 38 exports per rep per business day - and overages get expensive fast. A single month where you need 1,000 extra emails and 1,000 extra phone numbers costs $500 in overages alone.
Features and Reviews
Wiza's Chrome extension lets you pull work emails and phone numbers from professional profiles, export in bulk, and push contacts into Salesforce or HubSpot. We've tested the extension and it's genuinely fast - but the credit burn rate surprised us.
On G2, ease of use leads positive mentions with 427 citations, followed by contact info gathering at 322 and accuracy at 161. The negative side tells a different story: "expensive" appears 157 times, "limited credits" 127 times, and "inaccurate data" 57 times. That ratio of cost complaints to accuracy complaints is worth paying attention to.
Head-to-Head Comparison
| Mails.ai | Wiza | Prospeo | |
|---|---|---|---|
| Category | Email sender | Data extraction | Data platform |
| Core function | Send cold emails | Reveal contacts | Find & verify contacts |
| Built-in database | No | Profile-based extraction | 300M+ profiles |
| Email sending | Yes | No | No |
| G2 rating | 4.9/5 (5 reviews) | 4.5/5 (1,142 reviews) | 4.4/5 |
| Starting price | $24/mo (annual) | $49/user/mo | Free (75 verified emails/mo) |
| Best for | Budget sender, existing lists | Profile-sourced data | Verified data, no credit caps |
Here's the thing: most teams comparing these two don't need either one specifically. They need a reliable data layer paired with a reliable sender - and they're overpaying by trying to force one tool to do both jobs.
Building a Better Data Layer
For teams that also need direct dials, Prospeo's database includes 125M+ verified mobile numbers with a 30% pickup rate across all regions. Compare that to Wiza's phone credits at $0.35 each, and the math gets obvious fast. One team we've worked with - Stack Optimize - built from $0 to $1M ARR while keeping client deliverability above 94% and bounce rates under 3%, with zero domain flags across all their clients.
If you're still building your list engine, start with sales prospecting techniques and a repeatable lead generation workflow before you scale volume.
Stack Optimize built a $1M agency keeping bounce rates under 3% and zero domain flags - because the data was verified before it ever hit a sender. Prospeo's 7-day refresh cycle and 5-step verification mean your Mails.ai campaigns start with clean contacts, not credit anxiety.
Pair 98% accurate data with any sender. Your deliverability will thank you.
FAQ
Can you use Mails.ai and Wiza together?
Yes - Wiza extracts contacts and Mails.ai sends emails. Export from one, import into the other. The friction is cost: Wiza's credits add up fast at scale, so a more cost-effective data source paired with Mails.ai often makes more sense for teams doing volume outbound.
Which tool is cheaper for outbound?
Different categories, so a direct comparison is misleading. Mails.ai starts at $24/month annually for sending. Wiza starts at $49/user/month for 100 email reveals. For a 3-person team, Wiza overages can hit $500/month on a busy month, while Mails.ai stays flat.
Is there one tool that finds contacts and sends emails?
Apollo.io offers both data and engagement. Lemlist is primarily a sending platform with some prospecting built in. Most experienced outbound teams use a dedicated data tool for accuracy paired with a dedicated sender for deliverability - specialization beats all-in-one for results.