Home/Guides/Ad creatives & email tests
THE PRICELY BUYING GUIDE
Best AI ad creative makers and email inbox tests (2026)
About our affiliate links
Two jobs sit on this page because they come at the same stage: you have something to sell and need people to see it. Ad creative tools produce the images and copy for paid ads quickly. Email test tools tell you whether your newsletter lands in the inbox or in spam before you send it to your whole list.
The email testers range from a free score every few hours to monitoring platforms priced for companies. The ad tools work on short trials, and one of them asks for a card up front. Plans and terms below were read from each tool's own pricing and FAQ pages on 3 Nov 2026.
Quick picks
- Quick free spam check: Mail-Tester, 3 tests every 24 hours.
- Free check with inbox placement and device previews: Unspam.email, 3 spam tests and 2 inbox placements a month.
- Full deliverability monitoring: GlockApps Essential, $59/mo billed yearly for 360 spam tests.
- Clone and resize ads from competitors: Generate Ads AI, $29/mo flat with unlimited use.
- Ads from product photos, with a refund window: AdCreative.ai, $29/mo billed yearly.
How these tools were compared
This guide is built from what each company publishes. For every tool it checks the free allowance, the cheapest paid plan, whether a trial needs a card, and the refund terms.
Compare at a glance
| Tool | Free plan or trial | Cheapest plan | Refunds | Trustpilot |
|---|---|---|---|---|
| Mail-Tester | 3 tests per 24 hours | See pricing | Not stated | Too few reviews |
| Unspam.email | 3 spam tests, 2 inbox placements/month | Custom | 14 days | Not listed |
| MxToolbox | 1 domain, weekly blacklist check | $129/mo | 30 days on Delivery Center | Too few reviews |
| GlockApps | 2 spam tests | $59/mo, yearly | Unused period only | Too few reviews |
| Generate Ads AI | 7-day trial | $29/mo | Cancel anytime | 4.6 (20) |
| AdCreative.ai | 7-day trial, 20 credits, card needed | $39/mo ($29 yearly) | 7 days monthly, 30 yearly, if unused | 3.5 (4,639) |
Ad creatives
Generate ad images, banners and copy variations for paid campaigns.
Generate Ads AI
from $29/mo
Trial: 7-day trial
Generate Ads AI now runs on AdKit. It clones competitor ads from the Facebook Ads Library in two clicks, resizes ads to any format, edits text and elements with AI, and tracks competitors across Meta, Google, TikTok and other networks. Single Project costs $29/mo for one project with one ad account per platform; Unlimited is $49/mo. The price is flat with unlimited use, there is a 7-day trial, and you cancel in one click.
On Trustpilot, Generate Ads AI scores 4.6 from 20 reviews. The few reviews of AdKit praise the onboarding and say it cut the time spent making Meta ad creatives.
Pick it if you run ads for one brand and want to start from what competitors already run.
AdCreative.ai
from $39/mo
Trial: 7-day trial, 20 credits, card needed
AdCreative.ai generates ad creatives and copy, places product photos on AI models, and makes UGC-style video ads. Starter is $39/mo ($29/mo billed yearly) for 20 credits a month and 2 brands. The 7-day trial gives 20 credits but needs a card. It refunds within 7 days on monthly plans and 30 days on yearly plans, as long as you have not generated or downloaded anything.
On Trustpilot, AdCreative.ai scores 3.5 from 4,639 reviews. Reviewers often praise attentive support on technical and billing questions; overall opinions are mixed.
Pick it if you have product photos and need many ad variations without a designer.
Email inbox tests
Send a test email to the tool's address and it reports the spam score, authentication (SPF, DKIM, DMARC) and where the message landed.
Mail-Tester
Mail-Tester gives you a temporary address, scores your email out of 10 with SpamAssassin, and checks SPF, DKIM, DMARC and BIMI. Free web tests are limited to 3 every 24 hours, and results stay available for 7 days. Two things to know: sending a new email to the same address deletes the previous result, and anyone with the address can see the result.
Pick it for a quick check before each newsletter.
Unspam.email
Unspam.email scores spam from 0 to 100, checks major blacklists, previews your email in more than 50 clients in light and dark mode, and predicts where readers will look. The free plan gives 3 spam tests, 2 inbox placement tests and 3 device previews a month. Paid plans are custom, top-up credits never expire, and there is a 14-day refund window.
Pick it if you want to see how your newsletter renders as well as whether it lands.
MxToolbox
MxToolbox helps you set up DMARC safely, finds every service sending mail as your domain, and monitors SPF and DKIM. The free plan watches 1 domain against the top 30 blacklists once a week. Delivery Center costs $129/mo for 5 domains and 30 inbox placement tests, with a 30-day money-back guarantee.
Pick it when a test shows an authentication problem and you need to find the cause.
GlockApps
GlockApps tests deliverability across inbox providers with several spam filters, monitors your domain against more than 50 blocklists and analyzes DMARC reports. The free plan includes 2 spam tests. Essential costs $59/mo billed yearly for 360 spam tests. Refunds on monthly plans cover only the last month, and only if you didn't use it.
Pick it once your list is large enough that a spam problem costs real sales.
What to check before you commit
- Trials that need a card. AdCreative.ai asks for one; Generate Ads AI charges only after the trial.
- Refunds depend on use. AdCreative.ai and GlockApps refund only if you didn't use the credits.
- Free test privacy. Mail-Tester results are visible to anyone with the test address.
- Yearly prices. GlockApps shows plans as yearly payments.
Which one should you pick?
- You send a newsletter every week: Mail-Tester before each send, Unspam.email when you change your template.
- Emails started landing in spam: MxToolbox to find the cause, GlockApps to monitor after.
- You run ads and want ideas from competitors: Generate Ads AI.
- You have product photos and need many ad versions: AdCreative.ai.
How this guide was put together
The email tools come from the guides that rank highest for deliverability testing, EmailToolTester and Mailtrap. The ad tools come from search results for AI ad creative generators, plus tools that run partner programs. Plans, limits and terms come from each tool's own pricing and FAQ pages, read on 3 Nov 2026. User ratings and review themes come from each tool's Trustpilot page, read the same day; they reflect what reviewers chose to post, not a survey of all users.