Move SMTP or API sending in stages, run both providers in parallel, and check your ports and support needs first.
A staged move between two SMTP and API services, with an honest list of where SMTP2GO is stronger
List your domains, keys, templates, webhooks and suppressions.
Add MigoSMTP DNS records alongside the old ones.
Recreate templates and webhooks, import suppressions.
Shift traffic in stages and watch delivery.
Remove old records and keys once stable.
Terminology reflects the provider's documentation at the time of writing. Verify against current docs before publishing.
curl https://api.smtp2go.com/v3/email/send \
-H "X-Smtp2go-Api-Key: SMTP2GO_KEY" \
-H "Content-Type: application/json" \
-d '{ "sender": "hello@yourdomain.com",
"to": ["user@example.com"],
"subject": "Hello",
"html_body": "<p>Hi there</p>" }'curl https://api.migosmtp.com/v1/send \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"from": "hello@yourdomain.com",
"to": "user@example.com",
"subject": "Hello",
"html": "<p>Hi there</p>"
}'Illustrative requests. See the API reference for the complete field list.
To move from SMTP2GO to MigoSMTP, list your sender domains and verified senders, SMTP users, API keys and webhooks, then authenticate your domains with MigoSMTP while the SMTP2GO records stay in place. Create scoped keys or SMTP credentials, point webhooks at your handler, import suppressions, and move one stream at a time. If your application sends over SMTP, the change is often a new host, username and password.
SMTP2GO and MigoSMTP are the same kind of service: a sending platform with an SMTP relay and an API. That makes the move simpler than leaving a marketing suite, but it also means the decision comes down to specifics. SMTP2GO documents SMTP ports 25, 80, 587, 2525 and 8025, plus SSL on 465 and 8465, and says 2525 is open from most locations. MigoSMTP documents 587 with STARTTLS and 465 with implicit TLS. If your hosting provider blocks 587 and you rely on 2525, check that first.
SMTP2GO lists a free plan of 1,000 emails a month with a cap of 200 a day, and describes 24 hour support by helpdesk, chat and phone. It assigns a dedicated IP automatically at 100,000 emails a month and above. MigoSMTP also has a free plan of 1,000 emails a month, offers dedicated IPs as an add-on on its Growth and Scale plans, and includes them on Enterprise. These details are from smtp2go.com, read on 15 October 2026.
If an application sends over SMTP, create MigoSMTP credentials, change the host, username and password in staging, and send a test. That is often the whole change for that application.
If you send on 2525 because your host blocks 587, test 587 or 465 from the same server before you commit. A blocked port is the most common reason an SMTP move fails on day one.
SMTP2GO's API takes a sender, a recipient list, a subject and a body. The equivalent MigoSMTP call has the same shape, so changes are usually field renames.
SMTP2GO asks you to verify senders or domains. Authenticate each sending domain in MigoSMTP and keep both sets of DNS records until the move is complete.
Map the events your code uses, such as delivered, bounced and spam complaint, update the endpoint, and verify signatures in the new payload.
Export bounced and unsubscribed addresses from SMTP2GO and import them before the first send so you never mail a known bad address.
Use the free SPF, DKIM and DMARC checker to confirm that your domain authorises SMTP2GO and MigoSMTP at the same time before you move any traffic.
If you move to a dedicated IP, the IP warmup calculator gives you a day-by-day volume ramp so reputation builds steadily.
While both providers run, the bounce code lookup turns raw SMTP responses into plain explanations and a suggested fix.
Send our team your list of streams and rough volumes and ask for a review of the order in which to move them. This is offered on request.
The checker, calculator and lookup are free tools on this site. The cutover review is a conversation with our team, and you decide every change in your own account.
Run a send from the machine that will send in production, not from your laptop. Network rules differ and you want to find them early.
Publish SPF and DKIM for MigoSMTP while keeping SMTP2GO's records so both can send during the overlap.
Both providers have a free tier, so you can test MigoSMTP end to end without paying before you move real traffic.
During the overlap, compare deferral and complaint rates by recipient domain between the two providers.
If you rely on SMTP2GO's phone support, decide what you will use instead, and ask us what each MigoSMTP plan includes.
Remove the old credentials first, wait a week, then remove old DNS records.
Moving from SMTP2GO? Our team can review your senders and ports before you start.
Authenticate your domains with MigoSMTP alongside SMTP2GO, create credentials or API keys, update webhooks, import suppressions, and move one stream at a time. For SMTP senders the change is usually a new host, username and password.
Not in every way, and that is the honest answer. SMTP2GO documents more SMTP ports and describes 24 hour phone, chat and helpdesk support. MigoSMTP offers INR and EUR billing, GST invoices for India, UPI payment, and a different plan structure. Choose on what matters to you.
Port 587 with STARTTLS and port 465 with implicit TLS. We advise against port 25 for submission because many hosts block it. SMTP2GO documents additional ports such as 2525 and 8025.
Dedicated IPs are an add-on on Growth and Scale and are included on Enterprise. SMTP2GO says it assigns one automatically from 100,000 emails a month, and that a shared IP usually works better below that.
Both have one. MigoSMTP's free plan has 1,000 emails a month. SMTP2GO lists 1,000 a month with a 200 a day cap.
Yes. Authenticate both and move a small share first.
If you depend on a port MigoSMTP does not offer, or on phone support, staying is sensible. Test before you decide.
From SMTP2GO's public FAQ and pricing information, read on 15 October 2026. Check their live pages before you decide.
Tell us about your domains, volume and setup and we will help you plan a safe, staged cutover.
Create an account, add your domain and send your first email.