Email Migration Checklist: Tools for a Smooth Provider Switch

Switching email providers without downtime requires careful planning. Follow this 8-step checklist with free tools to verify every DNS record, authentication protocol, and deliverability signal before, during, and after migration.

Migration Checklist

1
Check Current MX Records
Document your existing MX records and their priorities before making any changes. This gives you a rollback reference if anything goes wrong during migration.
Run MX Lookup
2
Verify SPF Record
Ensure your SPF record includes the new provider's sending IPs or include mechanism. Remove old provider entries only after migration is fully confirmed.
Check SPF Record
3
Verify DKIM Signing
Add the new provider's DKIM public key to your DNS and confirm the selector resolves. Keep the old DKIM key active until all in-flight emails have been delivered.
Check DKIM Record
4
Check DMARC Policy
Review your DMARC policy before migration. Consider temporarily relaxing to p=none during the switch to avoid rejecting legitimate email from the new provider.
Check DMARC Policy
5
Test DNS Propagation
After updating MX records, verify propagation across global DNS servers. Full propagation can take 24-48 hours depending on TTL values.
Check DNS Propagation
6
Verify Email Delivery
Send test emails from the new provider and verify they arrive. Check that the sender address, reply-to, and headers are all correctly configured.
Verify Email Address
7
Check Blacklists
Confirm your new provider's IP addresses are not on any email blacklists. Blacklisted IPs will cause immediate delivery failures regardless of DNS configuration.
Run Blacklist Check
8
Monitor Spam Score
Test your spam score from the new provider. A high score after migration may indicate missing authentication records or reputation issues with the new IP range.
Check Spam Score

Quick Reference

Step 1: Check Current MX Records
Step 2: Verify SPF Record
Step 3: Verify DKIM Signing
Step 4: Check DMARC Policy
Step 5: Test DNS Propagation
Step 6: Verify Email Delivery
Step 7: Check Blacklists
Step 8: Monitor Spam Score

Frequently Asked Questions

How long does an email migration usually take?: A typical email migration takes 24-72 hours for DNS propagation, but the full process including testing and verification should be planned over 1-2 weeks. Always keep the old provider active during the transition period.
Should I update SPF before or after changing MX records?: Update SPF first. Add the new provider's include mechanism to your SPF record before switching MX records. This ensures emails sent from the new provider pass SPF checks immediately.
What is the biggest risk during email migration?: The biggest risk is email loss during the cutover window. Mitigate this by keeping both providers active simultaneously, lowering MX TTL values before migration, and monitoring delivery closely for the first 48 hours.

Ready to Migrate?

Start with Step 1 and work through the checklist. All tools are free with no signup required.

Browse All Tools

Migration Checklist

Check Current MX Records

Document your existing MX records and their priorities before making any changes. This gives you a rollback reference if anything goes wrong during migration.

Run MX Lookup

Verify SPF Record

Ensure your SPF record includes the new provider's sending IPs or include mechanism. Remove old provider entries only after migration is fully confirmed.

Check SPF Record

Verify DKIM Signing

Add the new provider's DKIM public key to your DNS and confirm the selector resolves. Keep the old DKIM key active until all in-flight emails have been delivered.

Check DKIM Record

Check DMARC Policy

Review your DMARC policy before migration. Consider temporarily relaxing to p=none during the switch to avoid rejecting legitimate email from the new provider.

Check DMARC Policy

Test DNS Propagation

After updating MX records, verify propagation across global DNS servers. Full propagation can take 24-48 hours depending on TTL values.

Check DNS Propagation

Verify Email Delivery

Send test emails from the new provider and verify they arrive. Check that the sender address, reply-to, and headers are all correctly configured.

Verify Email Address

Check Blacklists

Confirm your new provider's IP addresses are not on any email blacklists. Blacklisted IPs will cause immediate delivery failures regardless of DNS configuration.

Run Blacklist Check

Monitor Spam Score

Test your spam score from the new provider. A high score after migration may indicate missing authentication records or reputation issues with the new IP range.

Check Spam Score

Frequently Asked Questions

How long does an email migration usually take?

A typical email migration takes 24-72 hours for DNS propagation, but the full process including testing and verification should be planned over 1-2 weeks. Always keep the old provider active during the transition period.

Should I update SPF before or after changing MX records?

Update SPF first. Add the new provider's include mechanism to your SPF record before switching MX records. This ensures emails sent from the new provider pass SPF checks immediately.

What is the biggest risk during email migration?

The biggest risk is email loss during the cutover window. Mitigate this by keeping both providers active simultaneously, lowering MX TTL values before migration, and monitoring delivery closely for the first 48 hours.