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Fiverr Pro
Nederlands
$
USD
I will clean your email list using SMTP email guard verification
Martin Podlaski
Over deze dienst
Do you have an email list and want to reduce bounce risk before sending your campaign?
I will clean and verify your email list using SMTP-based validation and my own email verification tool SMTP Email Guard.
This service is for marketers, agencies, business owners and sales teams who want to improve list quality before running email campaigns.
What I check:
email syntax
duplicate emails
domain existence
MX records
SMTP server response
invalid or unreachable emails
catch-all domains
unknown / risky responses
You will receive a cleaned CSV file with verified results, depending on the package selected.
Possible result categories:
Valid email address appears to be accepted by the mail server
Invalid email address, domain or mailbox appears to be incorrect
Catch-all the domain accepts many addresses but does not clearly confirm a specific mailbox
Unknown / Risky the server does not provide a clear answer, for example because of greylisting, timeout or anti-validation protection
Why choose this service?
SMTP-based verification
Clean CSV output
Helps reduce hard bounces
Useful before cold email, newsletter or B2B outreach campaigns
No complicated SaaS credits
Maak kennis met Martin Podlaski
Martin Podlaski
CEO
- Afkomstig uitPolen
- Lid sindsjan 2020
- Gem. reactietijd1 uur
Talen
Pools, Engels
Hi, I'm Marcin! 👋
I help businesses get more qualified B2B leads through email marketing, cold outreach and deliverability optimization.
I can help you find targeted prospects, set up cold email systems, build automated follow-up sequences and improve SPF, DKIM, DMARC and Mail Tester scores.
My focus is simple: more leads, better delivery and higher ROI — without wasting budget on random traffic.
Send me a message and let’s discuss how to grow your business.
Veelgestelde vragen
Q: Do you guarantee 100% valid emails?
A: No. No email verification method can honestly guarantee 100% accuracy because some mail servers use catch-all, greylisting or anti-validation protection. I classify emails as valid, invalid, catch-all or unknown/risky.
Q: What file formats do you accept?
A: CSV, TXT and XLSX files are accepted. The file should contain one email column if possible.
Q: Do you remove duplicates?
A: Yes, duplicate emails can be removed during the cleaning process.
Q: What does catch-all mean?
A: Catch-all means that the domain may accept many email addresses, but the server does not clearly confirm whether a specific mailbox exists.
Q: Can you verify large lists?
A: Yes. For lists above 150,000 emails, please contact me for a custom offer.
Q: Will this improve my deliverability?
A: It can help reduce bounce risk by removing invalid emails, but deliverability also depends on your domain reputation, email content, sending infrastructure and campaign practices.
