Shared IP
What is a shared IP?
A shared IP is an IP address that is used by multiple businesses or senders to send emails. Instead of being assigned to a single business or domain, the same sending IP is shared among several users and managed by the email service provider.
What is the difference between a shared IP and a dedicated IP?
Aspect | Shared IP | Dedicated IP |
Usage | Used by multiple senders | Used by one sender only |
Reputation | Shared among all users | Fully controlled by the sender |
Setup | Ready to use | Requires IP warm-up |
Cost | Usually included in basic plans | Often costs extra |
Management | Handled by the provider | Sender is responsible |
What are the benefits of using a shared IP?
Easy setup
Shared IPs do not require manual IP warm-up. You can start sending emails immediately without worrying about gradually increasing volume.
Affordable
Because the IP is shared, the cost is distributed across multiple users, making it an affordable option for small teams and early-stage products.
Managed reputation
Email service providers actively monitor shared IPs. They identify and restrict abusive senders, helping maintain overall IP health.
Reduced operational effort
You don’t need a dedicated email or deliverability team. The provider handles reputation management, monitoring, and compliance.
Suitable for low to moderate volumes
If you send a limited number of transactional emails, a shared IP provides stable delivery without extra overhead.
What are the disadvantages of using a shared IP ?
Reputation dependency
Your email deliverability is influenced by other senders on the same IP. If someone sends spam or violates policies, it can temporarily affect inbox placement.
Limited control over deliverability
You do not have full control over the IP’s reputation, throttling rules, or sending patterns. Email service providers manage these aspects, which means you have less flexibility compared to a dedicated IP.
Inconsistent inbox placement
Since multiple senders share the same IP, inbox placement may fluctuate at times. Even if you follow best practices, changes in overall IP activity can affect how mailbox providers treat your emails.
Dependence on provider monitoring
The quality of a shared IP heavily relies on how well the email service provider monitors and manages senders. Weak enforcement can increase the risk of deliverability issues.
When should you use a shared IP?
A shared IP is a good choice if:
You’re just getting started: Startups, early-stage products, and new domains benefit from shared IPs because they don’t require IP warm-up or complex setup.
Your email volume is low to moderate: If you send a limited number of transactional emails per day or month, a shared IP provides stable delivery without overloading the IP.
You want minimal maintenance: The email service provider manages IP reputation, monitoring, and abuse prevention, so you don’t need a dedicated email operations team.
Cost efficiency matters: Shared IPs are usually included in basic plans, making them a budget-friendly option compared to dedicated IPs.
Your emails are primarily transactional: Order confirmations, OTPs, password resets, and account notifications typically perform well on shared IPs when they’re sent through a reputable provider.
You need quick onboarding: If you want to start sending emails immediately without waiting for IP warm-up, a shared IP is the fastest option.