About Port25
Port25 is a Technology company based in Ellicott City (United States) founded in 1999, and was acquired by SparkPost in February 2015. High-volume emails are delivered via PowerMTA SMTP server. The company has 12 employees. Its focus areas include Enterprise Applications, MarketingTech, Email Marketing and Email Deliverability. Its legal entity is Port25 Solutions, Inc. Its competitors include Return Path, MessageGears and Litmus; 3 of its 3 listed competitors have raised funding.
Company details
Port25 was founded in 1999 in Ellicott City, United States, and operates in the email infrastructure sector. PowerMTA is provided as an SMTP server for high-volume message transmission. Features such as rapid transfer rates, simplified configuration, and ongoing monitoring and analysis are included. The platform is used by email service providers and marketing automation firms, including MailChimp, Oracle, NetSuite, and IBM.
- Headquarters Ellicott City, United States
- Employees 12
- Stage Acquired
- SectorsTechnology
- Website category Computers Electronics and Technology · Web Hosting and Domain Names
- Website port25.com
- Social LinkedIn X
- Acquired by SparkPost (Feb 2015)
- Legal Name Port25 Solutions, Inc
Investors in Port25
Port25 has secured backing from 1 investor. Prominent investors backing the company include SparkPost.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Transactional email delivery is facilitated via a cloud-based platform. | 2011 | sparkpost.com | Columbia, United States |
Investor details for Port25
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Timeline of Port25
2 dated milestones of Port25 across 16 years, from founding to its latest funding, stage changes and deals.
- Founded Port25 is founded.
- Exit Acquired by SparkPost.
Competitors of Port25
Port25 has 3 listed competitors in our database, 3 of them funded. They include Return Path, MessageGears and Litmus.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| returnpath.com | 1999 | New York, United States | $131.37M | 337 | Email marketing automation and fraud protection platform | |
| messagegears.com | 2010 | Atlanta, United States | $79.65M | 95 | Email marketing platform for enterprises | |
| litmus.com | 2005 | Cambridge, United States | $49M | 158 | Email marketing testing and analytics tools are provided to professionals. |
Detailed competitors of Port25
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Web traffic of Port25
The website of Port25 (port25.com) receives about 6.4K visits a month and ranks #3,440,658 among all websites worldwide, #7,281 in Web Hosting and Domain Names.
- Monthly visits6.4K
▲ 8.4% vs previous month
- Unique visitors2.5K
per month
- Global rank#3,440,658
among all websites
- Category rank#7,281
Computers Electronics and Technology · Web Hosting and Domain Names
- Bounce rate40%
- Pages per visit1.5
- Average visit9 sec
- DevicesDesktop 32% Β· Mobile 68%
Websites whose visitors overlap most with Port25. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
dkimcore.org | dkimcore.org | 100% | #1,765,121 | β | |
webadmingrr.wordpress.com | webadmingrr.wordpress.com | 98% | β | ||
| powermta.ninja | 92% | View details | |||
softstack.com | softstack.com | 85% | #13,561,315 | β | |
| aws.amazon.com | 83% | 56.6M | #416 | View details | |
| β’β’β’β’β’β’β’β’β’β’ | β’β’β’β’β’β’.com | β’β’% | β’.β’M | #β’β’β’β’β’ | β |
| β’β’β’β’β’β’β’β’β’β’ | β’β’β’β’β’β’.com | β’β’% | β’.β’M | #β’β’β’β’β’ | β |
| β’β’β’β’β’β’β’β’β’β’ | β’β’β’β’β’β’.com | β’β’% | β’.β’M | #β’β’β’β’β’ | β |
All 23 similar websites and full traffic analytics for Port25
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- 23 similar websites
- Audience overlap
- Engagement analytics
- Traffic by brand
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Top companies in MarketingTech
3 companies that operate in the same segment as Port25 (MarketingTech) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
Provider of AI-powered customer relationship management software | 2005 | Cambridge, Massachusetts, United States | USD 100.7 M | USD 3.13 B | 8,250 | |
Zeta Global is recognized as an AI-powered marketing cloud. | 2007 | New York, New York, United States | USD 357.58 M | USD 1.3 B | 3,142 | |
Multi-channel online marketing tools are provided for small businesses. | 1998 | Waltham, Massachusetts, United States | USD 37 M |
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Related news about Port25
Complete news archive for Port25
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Frequently Asked Questions about Port25
Port25 was founded in 1999.
Port25 is headquartered in Ellicott City, United States. It is registered at Ellicott City, Maryland, United States.
Port25 has 12 employees.
Port25 was founded in 1999 in Ellicott City, United States, and operates in the email infrastructure sector. PowerMTA is provided as an SMTP server for high-volume message transmission. Features such as rapid transfer rates, simplified configuration, and ongoing monitoring and analysis are included. The platform is used by email service providers and marketing automation firms, including MailChimp, Oracle, NetSuite, and IBM.
Port25's top competitors include MessageGears, Return Path and Litmus.
Port25 has 1 investor. Key investors include SparkPost.
Port25 operates through Port25 Solutions, Inc.
Yes. Port25 was acquired by SparkPost in February 2015.

