CpaTools Pro
Office365 SMTP cover
SMTP & Mailbox

Buy Office365 SMTP

Pre-configured Office365 SMTP servers backed by Microsoft's trusted IP reputation.

Within a few hours of confirmed purchase

What this service does for you

Standard hosting email and free providers quietly destroy deliverability. Shared IPs get blacklisted when other users spam, and manual Office365 SMTP configuration is a technical minefield of errors like 5.7.3 STARTTLS failures. Every failed email is a lost sale or a damaged brand.

CpaTools Pro delivers a direct pipeline to Microsoft's world-class email infrastructure, expertly configured for peak performance. Every account is pre-configured and tested with SMTP AUTH enabled, security defaults set, and mandatory STARTTLS encryption protecting your data in transit.

Plans span from $1 testing SMTPs to turnkey packages with 25 pre-created mailboxes, up to aged-domain warmed servers rated for 10,000 emails per day. Integration is a simple username and password, with no DNS changes, no complex APIs, and no developer required.

What is included

  • Microsoft IP reputation for inbox placement
  • Pre-configured and tested plug-and-play SMTP
  • Mandatory STARTTLS encryption on every account
  • SMTP AUTH pre-enabled before delivery
  • Aged, warmed servers for up to 10k emails/day
  • Works with WordPress, C#, PHP, any SMTP app
  • No DNS changes or developer required
  • Fixed pricing, no per-email charges

Frequently asked questions

The correct server address for all our plans is smtp.office365.com. This is the universal Microsoft endpoint designed for maximum compatibility with modern email applications.

Use port 587 with STARTTLS encryption, the secure industry standard. Avoid older, insecure ports like 25.

Yes. The Gold tier plans use aged domains and warm-up strategies to support sending up to 10,000 emails per day with high inbox placement.

It is an account that has gradually built a positive sending reputation through controlled sending. We handle this process for you, which tells email providers you are a legitimate sender.

We pride ourselves on rapid delivery. Your SMTP credentials and instructions are typically delivered within a few hours of a confirmed purchase.

Yes, we offer significant discounts for bulk orders. Tell us your requirements via the contact form and our team will provide a custom quote.

Read the guide first

Pricing plans

Every plan is fixed price with no hidden fees. Pick the tier that matches your goals.

Basic

$1

one-time

$1 per SMTP with a 25 SMTP minimum, guaranteed to pass your application connection test.

  • Guaranteed successful connection test
  • Ideal for testing email functionality
  • Minimum order of 25 SMTPs
Choose plan

Premium

$99

one-time

Turnkey solution with domain, admin access, and 25 pre-created SMTPs ready for multi-account sending.

  • Domain included
  • Full Office 365 admin access
  • 25 pre-created SMTPs
Choose plan
Most popular

Gold

$280

one-time

One high-performance SMTP on an aged domain with a 10k/day limit and 1-year validity.

  • Aged domain included
  • 10,000 emails per day limit
  • 1-year validity
Choose plan

Gold Plus

$980

one-time

Top-tier warmed SMTP with an unlimited 30-day replacement guarantee for mission-critical sending.

  • Fully warmed SMTP server
  • Unlimited 30-day replacement guarantee
  • Maximum uptime and performance
Choose plan

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