SendGrid to UniOne Migration: Complete Instructions

Switching from SendGrid to UniOne is a straightforward process — and this guide walks you through every step. Whether you’re moving your transactional emails, marketing notifications, or API-based sending, UniOne offers fast delivery, easier configurations, transparent pricing, and helpful 24/7 support to make your transition smooth and risk-free.
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Why Switch from SendGrid to UniOne?

If you’re looking for a more predictable, developer-friendly email API experience, UniOne is ready to help.

Here’s why many businesses choose to switch from SendGrid:

UNIONE
Consistent inbox placement SPF, DKIM, DMARC, custom tracking domains, and dedicated IPs (available on any plan) are your email deliverability success set
Clear, simple pricing Starting from just $4/month — with all the features included
24/7 expert support Available to every customer, not just top-tier plans
300+ predesigned templates Tailored for transactional and marketing emails with visual editor backed up by AI
Friendly API and SMTP Reintegrate your email streams quickly with fast setup and minimal configuration
Built-in email validation Keep mailing lists clean and reduce bounces
Advanced analytics Exportable logs and detailed reporting
Consistent inbox placement
UNIONE SPF, DKIM, DMARC, custom tracking domains, and dedicated IPs (available on any plan) are your email deliverability success set
Clear, simple pricing
UNIONE Starting from just $4/month — with all the features included
24/7 expert support
UNIONE Available to every customer, not just top-tier plans
300+ predesigned templates
UNIONE Tailored for transactional and marketing emails with visual editor backed up by AI
Friendly API and SMTP
UNIONE Reintegrate your email streams quickly with fast setup and minimal configuration
Built-in email validation
UNIONE Keep mailing lists clean and reduce bounces
Advanced analytics
UNIONE Exportable logs and detailed reporting

Preparing for Migration

Evaluate Your Current Setup
Make a quick checklist of everything your application currently uses — API endpoints and SMTP credentials, email templates, webhooks, suppression lists, sending streams, — so you can replicate essential configurations inside UniOne.
Get Familiar with UniOne’s Features
Take a moment to explore UniOne’s dashboards, API docs, SMTP, and template tools. Understanding how UniOne handles authentication, configurations, sendings, and webhooks will make your email API migration smoother and help you match your current setup.
Prepare Your Project for Migration
Collect everything you need to replicate your SendGrid workflow in UniOne. Export templates, review environment variables, and update DNS records for SPF, DKIM, and tracking domains. Having these settings ready ensures a quick transition of your email campaigns.

Step-by-Step Migration Process

Below is a clear, easy-to-follow process to switch from SendGrid to UniOne without downtime. 

Creating a UniOne Account 

Create_an_Account_at_UniOne

  1. Sign up to create a new account.
  2. Verify your email address.
  3. Log in to see the Welcome dashboard guiding you through the following steps.

Every new customer gets a 4-month free trial with 6,000 emails per month, which is usually more than enough for onboarding and testing your integration before fully switching.

verifying_email_domain_at_UniOne

Verifying Email Domain 

To ensure email deliverability, set up:

At UniOne, we show the necessary DNS values right in your dashboard under Sending Domains Settings when you add the specific domain. Just copy the records into your DNS provider’s panel and wait until they propagate.

Send Email via UniOne API 

To migrate from the SendGrid API to the UniOne API:

  1. Find your UniOne API key in the Account -> Security -> API key tab. If you create a setup using Projects, the API key for each project will be available in the project’s properties. 
  2. Replace your SendGrid API endpoint with UniOne:
    https://api.unione.io/en/transactional/api/v1/en/transactional/api/v1/email/send.json
  3. Adjust your request format if needed. 
  4. Test with your sandbox or dev environment before going live. You can also send test interactive API requests right from the UniOne API docs pages. 

UniOne_interactive_API_request

UniOne supports all major languages: Ruby, PHP, Python, Node.js, Java, C#, Go, and more, while also offering many ready-to-use SDKs and integrations with other services. And the list keeps getting bigger!

Send Email via UniOne SMTP 

If you prefer SMTP over Web API or want to go with a quicker integration option first:

  1. Go to the SMTP Configuration page in the dashboard.
  2. Locate the SMTP server name, port, login, and Password. send_email_via_unione_smtp
  3. Replace your SendGrid SMTP settings with UniOne’s values in your application.
  4. Send a test email to confirm everything works. Feel free to try the SMTP Debug Tool for a no-cost check-up. 

SMTP migration usually takes just a few minutes. 

Additional Migration Steps

Depending on your current setup and required functionality, you might also need to:

In the meantime, if there are any questions you need assistance with during the migration process, feel free to contact our support team, available 24/7 via live chat and email, so we can guide you through each step in more detail.

FAQ

How long does the migration from SendGrid to UniOne take?
Well, it depends a lot on the complexity of your current setup, number of existing endpoints and features you want to use. On average, most users complete the SendGrid to UniOne migration in under an hour for SMTP connection and in a week or two for HTTP API. More complex setups (multiple templates, many integrations, or custom event logic) may take a few weeks, but, from what our customers say, the newly gained benefits are totally worth it.
Which programming languages does UniOne API support?
As for now, UniOne provides official SDKs for PHP, Ruby, and C# while also offering examples for Python and Node.js, plus clear REST API documentation for any custom integration. At the same time, we’re working on expanding the list of supported ready-to-use libraries.
How does API authentication work in UniOne compared to SendGrid?
UniOne uses a secure API key system similar to SendGrid, but with enhanced permission management and project-level isolation for complete separation of sending streams.
Can I migrate incrementally or do I need to transfer everything at once?
Actually, if you send a lot of emails (tens of thousands per month and more), we strongly recommend you to migrate gradually. Start with sending a certain percentage of your email traffic through UniOne first for a smooth warm-up, monitor performance, gradually increase sending volumes after ensuring everything world well, and then fully switch.
What happens to my contact lists?
UniOne doesn’t store contact lists or recipients’ email addresses by default like SendGrid does. If you need list-based sending, you can easily integrate your CRM or database with UniOne through API to work with your own existing segments.

Time to Switch to UniOne?

UniOne makes it easy to move away from SendGrid while getting stable deliverability for your email campaigns, simple configuration management, predictable cost-effective pricing, and real humans supporting you every step of the way. Start with your 4-month free trial and explore everything before fully committing. If you’d like help planning your migration, our team is here 24/7.
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